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1.河北大学 化学与材料科学学院,河北 保定 071002
2.中国质量检验检测科学研究院,北京 100176
3.安捷伦科技(中国)有限公司,北京 100102
张红医,博士,教授,研究方向:分析化学,E-mail:hyzhang@hbu.edu.cn
陈 辉,博士,研究员,研究方向:农产品质量安全检测,E-mail:ciqhuichen@163.com
收稿日期:2025-01-06,
修回日期:2025-02-18,
纸质出版日期:2025-09-15
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成蕊,谢瑜杰,常巧英,仝凯旋,吴兴强,张红医,范春林,吕美玲,陈辉.一步式自动QuEChERS结合液相色谱-四极杆-飞行时间质谱法同时检测酸枣仁中151种农药和15种真菌毒素[J].分析测试学报,2025,44(09):1912-1923.
CHENG Rui,XIE Yu-jie,CHANG Qiao-ying,TONG Kai-xuan,WU Xing-qiang,ZHANG Hong-yi,FAN Chun-lin,LÜ Mei-ling,CHEN Hui.Simultaneous Determination of 151 Pesticides and 15 Mycotoxins in Ziziphi Spinosae Semen by One-step Automated QuEChERS Combined with LC-Q-TOF MS[J].Journal of Instrumental Analysis,2025,44(09):1912-1923.
成蕊,谢瑜杰,常巧英,仝凯旋,吴兴强,张红医,范春林,吕美玲,陈辉.一步式自动QuEChERS结合液相色谱-四极杆-飞行时间质谱法同时检测酸枣仁中151种农药和15种真菌毒素[J].分析测试学报,2025,44(09):1912-1923. DOI: 10.12452/j.fxcsxb.25010608.
CHENG Rui,XIE Yu-jie,CHANG Qiao-ying,TONG Kai-xuan,WU Xing-qiang,ZHANG Hong-yi,FAN Chun-lin,LÜ Mei-ling,CHEN Hui.Simultaneous Determination of 151 Pesticides and 15 Mycotoxins in Ziziphi Spinosae Semen by One-step Automated QuEChERS Combined with LC-Q-TOF MS[J].Journal of Instrumental Analysis,2025,44(09):1912-1923. DOI: 10.12452/j.fxcsxb.25010608.
利用一步式自动QuEChERS方法结合液相色谱-四极杆-飞行时间质谱(LC-Q-TOF MS),建立了一种同时检测酸枣仁中151种农药和15种真菌毒素的新方法。样品水化后,经5%甲酸乙腈提取,加入4 g无水硫酸镁和1 g氯化钠,使用十八烷基硅烷(C
18
)、N-丙基乙二胺(PSA)和多壁碳纳米管(MWCNTs)填料净化,提取和净化采用一步式自动QuEChERS前处理设备进行,采用ZORBAX SB-C
18
色谱柱(100 mm×2.1 mm,3.5 µm)分离,以0.1%甲酸水溶液(含5 mmol/L乙酸铵)和0.1%甲酸甲醇为流动相进行梯度洗脱,LC-Q-TOF MS采用All Ions MS/MS采集方式,并在正、负离子扫描模式下进行检测,基质匹配外标法定量分析。结果表明,166种化合物在相应的质量浓度范围内线性关系良好(
r
2
≥ 0.992 6)。目标化合物在生、炒酸枣仁中的筛查限(SDL)和定量下限(LOQ)均为0.5~20 µg/kg。在1倍、2倍和10倍LOQ 3个添加水平下(
n
=6),生酸枣仁的回收率为71.2%~118%,相对标准偏差(RSD)为0.80%~19%,炒酸枣仁的回收率为71.1%~120%,RSD为1.0%~19%。该方法简便、快速、灵敏度高,可用于酸枣仁中农药和真菌毒素的高通量筛查和定量分析。
A novel method was developed for the simultaneous determination of 151 pesticides and 15 mycotoxins in
Ziziphi Spinosae Semen
(ZSS) using a combination of one-step automated QuEChERS and liquid chromatography-quadrupole-time of flight mass spectrometry(LC-Q-TOF MS). The sample was hydrated with 10 mL of deionized water and left to stand for 10 minutes. Subsequently,extraction was carried out using a 5% formic acid acetonitrile solution,followed by the addition of 4 g of anhydrous magnesium sulfate and 1 g of sodium chloride to induce phase separation. Cle
anup was performed using 100 mg of octadecylsilane(C
18
),100 mg of N-propylethylenediamine(PSA),and 5 mg of multi-walled carbon nanotubes(MWCNTs) as purification materials. Both extraction and cleanup steps were conducted using a one-step automated QuEChERS pretreatment system. Separation was performed using a ZORBAX SB-C
18
column(100 mm×2.1 mm,3.5 µm) with gradient elution,utilizing 0.1% formic acid aqueous solution(containing 5 mmol/L ammonium acetate) and 0.1% formic acid methanol as mobile phases. Detection was performed using LC-Q-TOF MS with electrospray ionization(ESI) and All ions MS/MS scanning in both positive and negative modes,and quantification was carried out via the matrix-matching external standard method. The analysis demonstrated that all 166 compounds exhibited good linearity,with correlation coefficients(
r
² ≥ 0.992 6) across their respective concentration ranges. The screening detection limits(SDLs) and limits of quantification(LOQs) ranged from 0.5 to 20 µg/kg for both raw and fried ZSS samples. Recovery experiments were performed on raw and fried ZSS at three spiked levels of 1-fold,2-fold and 10-fold LOQ(
n
=6),and the recoveries ranged from 71.2% to 118% with RSDs of 0.80% to 19% for raw ZSS and from 71.1% to 120% with RSDs of 1.0% to 19% for fried ZSS. The established method was applied to detect pesticide and mycotoxin residues in 20 batches of ZSS samples. Two pesticides and three mycotoxins were detected in actual samples. Notably,aflatoxin B
1
was detected in both raw and fried ZSS samples,with its content exceeding maximum residue limit(MRL) set by the Chinese Pharmacopoeia(2020). The method developed in this study offers a highly effective and reliable approach for quality control and safety supervision of ZSS,making a significant contribution to the assessment of the safety of ZSS products in the market. The method has great potential for food safety and herbal product safety.
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