最新刊期
卷 40 ， 期 3 ， 2021
- 摘要：The cold chain is the main mode for storage and transportation of Tan sheep meat,while quality issues caused by cold chain storage have received extensive attention.Lipid molecules are diverse and easily affected by the external environment,which are one of the main nutrients determining the meat quality of Tan sheep.In this study,a method was developed for the determination of lipid variations and molecular fragmentation mechanism by ultra high performance liquid chromatography-quadrupole-orbitrap mass spectrometry(UHPLC-Q-Orbitrap MS/MS) combined with lipidomics.The samples were extracted with isopropanol,and analyzed by mass spectrometry in full scan mode and secondary scan mode.A total of 48 significantly changed lipids were identified,including 8 fatty acyl carnitines,23 phosphatidylcholines(PC),3 lysophosphatidylcholines(LPC),13 phosphatidylethanolamines(PE) and 1 lysophosphatidylethanolamine(LPE).The changes showed the transient up regulation trend of partial PC,PE and fatty acyl carnitine in first 12 days,followed by down regulation of PC,PE and fatty acyl carnitine,as well as the up regulation of LPE and LPC in whole cold chain storage.The transient accumulation of PC,PE and fatty acyl carnitine could cause a large number of oxidation reactions after 12 days,which further indicated that the optimum cold chain time was 12 days.This method was suitable for the separation and quantitation of lipid molecules in complex matrix,which provided a basis for lipid variations and quality control of meat and meat products during cold chain storage.关键词：ultra high performance liquid chromatography-quadrupole-orbitrap mass spectrometry;fragmentation mechanism;lipidomics;cold chain storage;Tan sheep
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发布时间：2023-04-18 - 摘要：In this study,a silver colloid as surface enhanced Rarman scattering(SERS) substrate was rapidly synthesized via one step method.The biological fingerprint spectra of 18 groups of Raman characteristic peaks were thereafter obtained from the detection of opportunistic pathogen Stenotrophomonas maltophilia by SERS.Results demonstrated that the minimum concentration of bacterial suspension could reach 5×106 colony forming units(CFU)/mL with the relative standard deviations(RSDs) for repeatability detection of 6.8%-16%,which could meet the basic requirements for qualitative analysis in biomedical field.Besides,the Raman signals of pathogenic bacterial cells in the blood of positive patients obtained by this method are close to those of pure cultured strains,further indicating that this method is rapid(10 min),facile,portable and low cost,and has a broad application prospect in clinical diagnosis.关键词：Stenotrophomonas maltophilia;surface enhanced Raman scattering(SERS);rapid detection;clinical diagnosis
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发布时间：2023-04-18 - 摘要：To study the influences of different probes on the analytical sensitivity of immunochromatography assay(ICA),a traditional probe was prepared for the detection of 17β estradiol(17β E2),with magnetic nanoparticles(MNPs) to label 7 μg/mL 17β E2 monoclonal antibody(mAb,detection Ab).Meanwhile,a paired probe was prepared by using MNPs to separately label 5 μg/mL 17β E2 mAb and 5 μg/mL goat anti-mouse polyclonal antibody(pAb,the second antibody),and an indirect probe was prepared by using MNPs to label 14 μg/mL pAb.Then,three immunochromatography assays were established based on the three probes for the rapid detection of estradiol.The analytical sensitivities of three ICAs were compared by the 17β E2 detection.Results showed that the analytical sensitivities of ICAs based on traditional,paired and indirect probes for 17β E2 are 1,05,02 ng/mL,respectively.Among these three ICAs,the analytical sensitivity of indirect probe based ICA is the highest.Compared with the traditional and paired probes based ICAs,the detection limit of the indirect probe based ICA is 5 fold and 25 fold reduced,respectively.This study refreshes the conventional cognition toward the signal probe which is considered can only be prepared by using signal materials to label the detection Ab in the traditional immunochromatography assay,and provides a valuable reference for the rapid detection of other food safety hazard factors by immunochromatography assays.关键词：competitive immunochromatography;probe;17β estradiol(17β E2);food safety
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发布时间：2023-04-18 - 摘要：An inductively coupled plasma mass spectrometry(ICP-MS) was applied to the detection of concentrations of 50 mineral elements in American ginseng originated from Shandong(China),Jilin(China),USA and Canada.The mineral element compositions in American ginseng from different places were compared to decide the reduction factors,and then the mineral element fingerprints were constructed by transferring element compositions into graphs.In addition,the standard element fingerprints were established by using the average concentrations of each mineral element in American ginseng from Shandong(China),Jilin(China),USA and Canada,respectively.The similarity degrees between the mineral element fingerprints and the standard element fingerprints of the American ginseng samples from different regions were calculated with SPSS 200 Software.The thresholds of the similarity degrees were 093,091,098 and 093 for American ginseng from Shandong(China),Jilin(China),USA and Canada,respectively.To identify the geographical origin of an unknown American ginseng,it need calculate the similarity degree between the mineral element fingerprint of the unknown American ginseng and the standard element fingerprints,if the similarity degree is higher than the threshold of the similarity degree of American ginseng of a certain geographical origin,the unknown American ginseng belongs to the origin.20 batches of unknown American ginseng were used to verify this method with an accuracy of 85%.Furtherfore,the different ages and parts of American ginseng had no impact on the presented method.关键词：American ginseng;mineral element fingerprints;geographical origin;inductively coupled plasma mass spectrometry
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发布时间：2023-04-18 - 摘要：In this paper,an analytical method were developed for the determination of 5 main flavone aglycones including quercetin,luteolin,kaempferol,apigenin and baicalein,in Lonicerae Flos by solid phase extraction and liquid chromatography tandem mass spectrometry(SPE/LC-MS/MS).In Lonicerae Flos samples,rutin,cynaroside,astragalin,rhoifolin and baicalin were hydrolyzed and extracted by 50% ethanol solution(contained 10% hydrochloric acid),refluxed for 120 min,and finally cleaned up with an HLB solid phase extraction column.The solution was separated on a Mightysil RP-18 column(150 mm×46 mm(id),3 μm),and determined by LC-MS/MS with negative electrospray ionization(ESI-) in multiple reaction monitoring(MRM) mode.The external standard method was used for the quantitation analysis of 5 main flavone aglycones.The limits of quantitation(LOQs,S/N=10) were 0005 g/kg for quercetin,001 g/kg for luteolin and apigenin,and 005 g/kg for kaempferol and baicalein.Single laboratory method validation data were determined,and the calibration standard curves for 5 flavone aglycones were linear in the range of 0-10 g/kg with correlation coefficients more than 0995.The recoveries,at there spiked levels of 01,02,04 g/kg for quercetin and luteolin,005,01,02 g/kg for kaempferol,apigenin and baicalein after hydrolysis,ranged from 704%to 104%with relative standard deviations of 40%-12%.This method was suitable for the simultaneous determination and confirmation of flavone aglycones in Lonicerae Flos.关键词：Lonicerae Flos;flavone aglycones;solid phase extraction;liquid chromatography tandem mass spectrometry(LC-MS/MS)
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发布时间：2023-04-18 - 摘要：A ratiometric fluorescence sensor based on lanthanide metal-organic frameworks(MOFs) was synthesized for the detection of naproxen.A ratiometric fluorescent sensing material Eu-MOF,with Eu3+ as metal node and 1,3,5 benzenetricarboxylic acid as ligand,was synthesized by ultrasound synthesis method.The morphology characteristics and optical properties of this Eu-MOF,as well as its detection of naproxen were studied.The Eu-MOF showed dual emission from ligand and Eu3+ under the single excitation.The fluorescence emission of naproxen coincided with the fluorescence emission of Eu-MOF at 375 nm.There was an inner filter effect between Eu-MOF and naproxen.Therefore,the fluorescence emission increased gradually at 375 nm,but weakened gradually at 623 nm with the addition of naproxen,so that the ratiometric fluorescence detection of naproxen could be achieved.There was a good linearity of Eu-MOF for naproxen in the range of 007-23 μmol/L with a detection limit(LOD) of 0039 μmol/L.The Eu-MOF showed good selectivity and anti interference ability in the detection of naproxen.Thus,it is a superior material for detection of naproxen in actual samples.关键词：lanthanide based metal-organic frameworks;ratiometric fluorescence sensing;naproxen
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发布时间：2023-04-18 - 摘要：A kind of magnetic Ni based N doped multi walled carbon nanotubes(Ni-NMCNTs),with large specific surface area,were prepared by high temperature calcination.The morphology and structural changes of the material before and after adsorption were characterized,and its adsorption mechanism was further explored.Results showed that this magnetic Ni-NMCNTs with hollow tubular structure exhibited good adsorption capacity and reusability for BPA,and the presence of pyridine nitrogen in the material provided adsorption defect sites and enhanced π-π conjugation,which layed the foundation for improving adsorption performance.Experiments showed that acidic conditions are more conducive to the adsorption of BPA by Ni-NMCNTs.At ambient 25 ℃ conditions,the maximum adsorption capacity could reach 8364 mg/g and the adsorption percentage of BPA could reach up to 868%in 15 min when the dosage was 20 mg and pH value was 60.The adsorption process was in general agreement with the pseudo second order kinetic equation and Freundlich adsorption isotherm model.The thermodynamic parameters demonstrated that the whole adsorption process was spontaneous.关键词：bisphenol A;magnetic Ni based nitrogen doped multi wall carbon nanotubes;adsorption kinetics;recycling;adsorption mechanism
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发布时间：2023-04-18 - 摘要：A method was established for simultaneous detection of 97 pesticides in human blood by gas chromatography-tandem mass spectrometry(GC-MS/MS) with Simple-QuEChERS Nano.05 mL of blood sample was added to a 15 mL conical bottom polypropylene centrifuge tube and mixed with 15 mL water,then extracted with 20 mL ethyl acetate.The tube was oscillated for 10 min at 20 r/min,and then centrifuged at 8 000 r/min for 10 min.After that,the supernatant of extracts was purified by filtration through a Simple-QuEChERS Nano column and 022 μm organic membrane filter,then detected in multiple reaction monitoring(MRM) mode.There were good linear relationships for all the analytes except fenitrothion,with their correlation coefficients(r2) no less than 0987 3.The limits of detection(LODs) and the limits of quantification(LOQs) for 96 pesticides except allethrin(LOD and LOQ was 1103,3676 ng/mL) ranged from 006 ng/mL to 427 ng/mL and 018 ng/mL to 1424 ng/mL,respectively.At three spiked levels of 100,200,400 ng/mL,the recoveries for 97 kinds of pesticides ranged from 322% to 120%.The intra day precision and inter day precision of the method evaluated at a concentration of 100 ng/mL ranged from 19% to 11% and 36% to 13%,respectively.The developed method,optimized by the traditional QuEChERS method,was not only environmentally friendly,but also improved the efficiency of sample pre treatment and exhibited an enhanced performance in purifying blood sample,which could be used for the qualitative and quantitative analysis of multi pesticides in blood samples of forensic cases.关键词：Simple-QuEChERS Nano;gas chromatography-triple quadrupole mass spectrometry;human blood;pesticides
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发布时间：2023-04-18 - 摘要：A high performance liquid chromatographic(HPLC) method with innovative sample pretreatment was developed for the simultaneous determination of 23 carcinogenic dyes in toothpaste and mouthwash.The mouthwash sample was directly dissolved and diluted by ethanol.After mixed by vortex with quartz sand,the toothpaste sample was vacuum dried at 75 ℃,then ultrasonically extracted with ethanol at 50 ℃ for 30 min.The separation of 23 target analytes was performed on a ZORBAX Eclipse XDB-Phenyl column(150 mm×46 mm×5 μm) by gradient elution with 25 mmol/L tetrabutylammonium phosphate(pH 75) and methanol-acetonitrile(50∶50,by volume) as mobile phases.The detection wavelengths for diode array detector(DAD) were 400 nm,500 nm and 600 nm,respectively.Quantitative analysis was carried out by external standard method.Results showed that the chromatographic separation for 23 carcinogenic compounds was achieved within 32 minutes.There were good linear relationships for 23 target analytes in the corresponding concentration ranges with correlation coefficients(r2) not less than 0999 1.The detection limits(LOD) and quantitation limits(LOQ) were in the ranges of 006-066 mg/L and 018-198 mg/L,respectively.The average recoveries for 23 carcinogenic dyes in negative toothpaste and mouthwash at three spiked levels were in the ranges of 912%-104%and 920%-103%,with their relative standard deviations(RSD,n=6) of 25%-58%and 23%-55%,respectively.239 toothpaste and 88 mouthwash samples were detected by this method,and basic violet 3 was detected in a toothpaste sample.With the advantages of high sensitivity,good precision and satisfactory accuracy,the method is suitable for the quantitative analysis of 23 carcinogenic dyes in all kinds of toothpaste and mouthwash,and provides a good strategy reference for the quality and safety monitoring of toothpaste and mouthwash.关键词：high performance liquid chromatography;carcinogenic dye;toothpaste;mouthwash
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发布时间：2023-04-18 - 摘要：The accurate and rapid quantitative detection of biomarkers has a significant influence on controlling and preventing disease or toxin outbreaks.In this study,3D flower like Au@(MoS2/GO/o MWNTs) nanohybrids(AMGMs) were introduced as a desirable substrate for sensitive electrochemiluminescence(ECL) detection of prostate specific antigen(PSA).Specifically,the AMGMs acted as a substrate material with desirable electrical conductivity,excellent biocompatibility and a large specific surface area for loading abundant primary antibody,which could gather abundant amounts of Ru complexes on the electrode,giving an amplified signal.The assembly process of this immunosensor was investigated by electrochemical impedance spectroscopy(EIS) and cyclic voltammetry(CV),and confirmed by ECL method.The proposed ECL immunosensor was applied in the detection on different contents of PSA in the substrate,with a wide linear range of 01 pg/mL-50 ng/mL and a detection limit(S/N=3) of 01 pg/mL.The spiked recoveries for actual samples ranged from 982%to 106%.The proposed method exhibited the advantages of excellent stability and selectivity in determination of PSA antigen,providing a sensitive and novel ECL analysis platform for the trace detection of other biomarkers.关键词：3D flower like nanohybrids;electrochemiluminescence;prostate specific antigen(PSA);ultrasensitive detection
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发布时间：2023-04-18 - 摘要：Pesticide residues in Citri reticulatae Pericarpium were analyzed and their risks were assessed.117 pesticide residues in 198 samples were detected by gas chromatography-tandem mass spectrometry(GC-MS/MS) and high performance liquid chromatography-tandem mass spectrometry(HPLC-MS/MS).Acute and chronic intake risks were evaluated by using deterministic approach,and the matrix ranking developed by the Veterinary Residues Committee of the United Kingdom was referred to assess the risk scores of the pesticides.Chronic cumulative risk assessment of organophosphorus pesticides were calculated by hazard index(HI) approach.30 pesticide residues which contained 13 forbidden ones were detected in the 198 samples,with a whole detected rate of 985%and a residue level of 0001-117 mg/kg.For the pesticides detected,the chronic dietary intake risks expressed as percentage of acceptable daily intake(%ADI) were 0003%-3142%,while their acute dietary intake risks expressed as percentage of acute reference dose(%ARfD) were 0022%-26667%,which were all far below 100%,indicating that there existed very little risk for dietary exposure.The cumulative exposure risks for 6 organophosphorus pesticides were 0942,which were just slightly less than 1,but should be noticed.Risk ranking results showed that 16 pesticides concerning middle and high residue risk should be focused on the production and safety supervision.关键词：Citri reticulatae Pericarpium;pesticide residues;deterministic approach;risk ranking
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发布时间：2023-04-18 - 摘要：In order to assess the migration risk of antioxidants in food contact materials and products,an ultrahigh performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS) was established for the simultaneous determination of 9 antioxidants migration amounts in food contact materials and products.The separation of 9 antioxidants in the food simulant were performed on a C18 chromatographic column with 1 mmol/L ammonium fluoride-methanol as mobile phase.Under the electrospray ionization positive-negative mode,the antioxidants were detected in a multiple reaction monitoring mode,and quantified by the external standard method.Results indicated that this method exhibited a perfect performance in chromatographic separation.The calibration curves for the 9 antioxidants were linear in the range of 03-6 mg/L with their detection limits of 01 mg/L.The spiked recoveries ranged from 939% to 106% with relative standard deviations of 080%-93%.The method was suitable for the detection of migration amounts of 9 antioxidants in plastic food contact materials and products with the advantages of rapidness,high efficiency and good linear range.关键词：food contact materials and products;antioxidants;ultrahigh performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS)
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发布时间：2023-04-18 - 摘要：A polytyrosine/bismuth modified glassy carbon electrode(p-Tyr/Bi/GC) was firstly prepared by cyclic voltammetry with in situ bismuth plating.The electron transfer impedance and membrane surface morphology on the electrode were characterized by EIS and SEM.The p-Tyr membrane with flower shape evenly distributed on the surface of glassy carbon electrode,which could effectively promote the electron transfer.Taking the square wave anodic stripping voltammetric response of a composite film electrode to Pb2+ as a reference,the optimum preparation conditions for the p-Tyr/Bi/GC electrode and the optimal test medium were investigated.The optimal concentration of tyrosine and number of cyclic voltammetry scan for p-Tyr/GC electrode preparation were 15 mmol·L-1 and 15,respectively.The optimal Bi3+ concentration,pH value and accumulation potential in test medium were 10 μmol·L-1，60,and -120 V,respectively.Under the optimal conditions,the linear equation between the current response of the electrode to Pb2+ and its concentration in the range of 001-016 μmol·L-1 was Ip(μA)=0503 2+5468c(μmol·L-1)(r=0994 7),with a detection limit(3S/k) of 08 nmol·L-1.With high sensitivity,good stability and strong anti interference ability,the p-Tyr/Bi/GC electrode was successfully used for the determination of lead in tea samples with recoveries of 906%-963%and relative standard deviations not more than 39%.关键词：polytyrosine;bismuth;glassy carbon;lead;square wave anodic stripping voltammetry
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发布时间：2023-04-18 - 摘要：A single cell inductively coupled plasma mass spectrometry(SC-ICP-MS) was adopted to determine the intrinsic metal elements such as chromium(Cr),manganese(Mn),iron(Fe),copper(Cu) and zinc(Zn) in an individual cell in this article.Meanwhile,the reaction gas flow rate and the quadrupole rejection parameter q(RPq) of the analytes in dynamic reaction cell(DRC) mode were optimized for accurate determination.Besides,the effects of sample flow rate,cell density and dwell time on the detection of SC-ICP-MS were investigated.The accuracy for the quantitative results of SC-ICP-MS was validated by using the results of ICP-MS determination after cell resuspension,cell lysis by ultrasonic probe and cell digestion with concentrated nitric acid.Experimental results showed that the accuracy of quantitative Zn and Cu in single cell determined by SC-ICP-MS could be evaluated by the results of ICP-MS determination after cell lysis by ultrasound. The determined Fe and Cr in single cells could be verified by the results of cell acid digestion ICP-MS. In the absence of cell reference materials, a multi-angle validation for the quantitative results of SC-ICP-MS is necessary. Studies have shown that SC-ICP-MS could be better used for the analysis of related elements in single cell.关键词：single cell inductively coupled plasma mass spectrometry(SC-ICP-MS);method validation;single cell analysis;trace elements;dynamic reaction cell(DRC)
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发布时间：2023-04-18 - 摘要：In this paper,a simple and efficient method was developed and applied to the separation and determination of ACC007,a novel orally anti AIDS drug in serum samples and its tablets,based on high performance liquid chromatography(HPLC) coupled with ultrasound assisted ionic liquid dispersive liquid-liquid microextraction.The hydrophobic ionic liquid 1 octyl 3 methylimidazolium hexafluorophosphate(［C8mimPF6］) was used as extraction solvent.With the help of ultrasound,the ionic liquid could be divided into fine drops and dispersed entirely into sample solution without any dispersive solvent,promoting the analyte more easily migrating into the ionic liquid phase,and increasing the extraction rate up to 940%.Several important parameters affecting the extraction efficiency were investigated and optimized,including the type and volume of extraction solvent,pH value of sample,volume of sample,ultrasonication time,cooling time and centrifugation time.Under the optimized conditions,the calibration curves were linear over the range of 020-100 μg/mL,with limits of detection(LOD) of 0062 μg/mL for tablet and 0068 μg/mL for serum,respectively.The proposed method was applied to the detection of human serum samples and ACC007 tablets with satisfactory results.The spiked recoveries ranged from 905%to 103%with relative standard deviations of 29%-51%.关键词：ACC007;ionic liquid;dispersive liquid-liquid microextraction;high performance liquid chromatography(HPLC)
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发布时间：2023-04-18 - 摘要：In this paper,a rapid method was developed for the simultaneous determination of 16 organochlorine pesticides(OCPs) in cucumber,cole rape,orange and apple by QuEChERS purification and gas chromatography with electron capture detection(GC/ECD).Pesticide residues in vegetable and fruit samples were extracted by QuEChERS method with acetonitrile containing 1% acetic acid.The retention time for peaks of the organochlorine pesticide was used for qualitative analysis,and external standard method was applied to the quantitative analysis.Results showed that there were good linear relationships for 16 kinds of OCPs in the range of 20-100 μg/L with correlation coefficients larger than 099.The detection limits of the method were in the range of 016-290 μg/L.The average recoveries of 16 OCPs from 4 matrics(cole rape,cucumber,orange,apple) ranged from 701% to 119% with relative standard deviations(RSDs) of 023%-52%.Compared with other pretreatment methods,the method is rapid,effective,simple,cheap and reliable,and is suitable for the high throughput and rapid detection of OCPs residues in vegetable and fruit samples.关键词：QuEChERS;gas chromatography;vegetables and fruits;organo chlorine pesticide
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发布时间：2023-04-18 - 摘要：A novel disposable electrochemical sensor was fabricated by sputtering gold film and modifying multi walled carbon nanotubes(MWCNTS) on a low cost polyethylene terephthalate(PET) plastic as electrode substrate.The surface morphology of the working electrode was observed by scanning electron microscopy(SEM).The performance of the working electrode in different stages was characterized by cyclic voltammetry(CV).Under the optimal conditions,the nonylphenol(NP) was investigated by linear sweep voltammetry(LSV).Results showed that there was an excellent linear relationship between peak current of the proposed electrode and nonylphenol in the concentration range of 005-5 mg/L,with a detection limit of 003 mg/L.The spiked recoveries ranged from 920% to 103% with relative standard deviations(RSDs) less than 16%.The proposed electrode is low cost,easy to fabricate and available for small lot production.Furthermore,it could prevent itself from the cross contamination of electrode surface in different samples.It was applied to the detection of nonylphenol migration from real plastic samples with satisfactory results.关键词：disposable electrode;multi walled carbon nanotubes;gold film;nonylphenol
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发布时间：2023-04-18 - 摘要：A high performance liquid chromatography with diode array detector(HPLC-DAD) was developed for the simultaneous determination of 14 polyphenols,including neochlorogenic acid,chlorogenic acid,cryptochlorogenic acid,scopolin,caffeic acid,esculetin,p coumaric acid,ferruric acid,scopoletin,7 hydroxycoumarin,rutin,quercitrin,kaempferol 3 O β rutinoside and quercetin.002 g tobacco powder sample was ultrasonically extracted with 5 mL of 50%methanol for 30 min,and then the supernatant was put to pass through an aqueous phase filtration membrane.14 polyphenols were separated at their optimal detection wavelengths on an Agilent SB-C18 column(30 mm×150 mm，18 μm),with 005 mol/L potassium dihydrogen phosphate aqueous solution and methanol as mobile phases.There existed good linear relationships between peak areas and mass concentrations of the analytes,with their correlation coefficients(r2) larger than 0999 7.The limits of detection and limits of quantitation were in the ranges of 001-015 μg/mL and 003-050 μg/mL,while the intra day and inter day relative standard deviations(RSD) were 070%-36%and 40%-64%,respectively.The spiked recoveries ranged from 952%to 109%.The proposed method could be applied to the simultaneous determination of a variety of polyphenols in tobacco and cigarettes with good sensitivity,precision and recovery.关键词：high performance liquid chromatography;diode array detector;piecewise detection;tobacco;polyphenols
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发布时间：2023-04-18 - 摘要：Plasma metals(gold,silver) nanostructures are widely used in surface enhanced Raman scattering(SERS) and wearable stress sensing fields due to their unique physical and chemical properties.Among them,SERS is a kind of detection technology using plasma metal nanomaterials to enhance Raman scattering singal.It has high sensitivity and speciticity,and has been widely used in biomedical analysis,environmental monitoring,food and drug detection and other fields.With the rapid development of electronic detection technique and flexible electronic materials,flexible wearable sensing technique has also been developed rapidly,and a large number of research achievements have been obtained.SERS detection technique mainly relies on substrate materials of plasma metals,and wearable sensing elements based on Plasma metal nanostructures have extremely high sensitivity to human micro stress and micro strain.As SERS reinforced substrate materials and wearable stress sensor materials contain interoperability,application of SERS plasma metal nano substrate in flexible wearable detection is one of the application fields which is relatively new but not yet deeply studied.Therefore,the material composition classification of plasma metal sol nanostructures and their applications in SERS and wearable stress sensing are reviewed in this paper.Moreover,effects of these nanostructures on the sensitivity,repeatability and stability of SERS sensing and wearable stress sensing has been investigated.The development trend of precious metal colloidal nanostructures in SERS sensing and flexible wearable sensing elements is also forecasted.
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发布时间：2023-04-18
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