Analysis of Chlorophenols in Seawater Samples by Molecular Imprinted Magnetic Composite-based Dispersive Solid Phase Extraction Coupled with Liquid Chromatography

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Analysis of Chlorophenols in Seawater Samples by Molecular Imprinted Magnetic Composite-based Dispersive Solid Phase Extraction Coupled with Liquid Chromatography

- Analysis of Chlorophenols in Seawater Samples by Molecular Imprinted Magnetic Composite-based Dispersive Solid Phase Extraction Coupled with Liquid Chromatography
- Vol. 34, Issue 11, Pages: 1213-1219(2015)
- 作者机构：
  
  1. 浙江大学宁波理工学院
  2. 湖北大学有机化工新材料湖北省协同创新中心有机功能分子合成与应用教育部重点实验室
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Analysis of Chlorophenols in Seawater Samples by Molecular Imprinted Magnetic Composite-based Dispersive Solid Phase Extraction Coupled with Liquid Chromatography. [J]. 34(11):1213-1219(2015)
DOI：

Analysis of Chlorophenols in Seawater Samples by Molecular Imprinted Magnetic Composite-based Dispersive Solid Phase Extraction Coupled with Liquid Chromatography. [J]. 34(11):1213-1219(2015) DOI：

摘要

建立了一种快速、高效、灵敏的基质分散-磁性固相萃取/液相色谱(dMSPE-HPLC)方法，用于海水中5种氯酚类(CPs)污染物残留量的测定。样品用五氯酚分子印迹氨基功能化磁性复合材料富集，在C8反相液相色谱柱(250 mm×4.6 mm×5.0 μm)上分离，以甲醇-5 mmol/L乙酸铵水溶液(体积比70∶30)为流动相，230 nm处检测。考察了样品pH值、萃取时间和洗脱剂的种类与用量对CPs富集回收率的影响。结果表明，在最佳实验条件下，5种CPs在1~5000 ng/L浓度范围内呈良好的线性关系，相关系数(r2)均大于0.9989;平均回收率为86.5%~98.8%，相对标准偏差(RSDs)为0.8%~8.6%；检出限(LODs)为0.18~1.20 ng/L，定量下限(LOQs)为0.6~4.0 ng/L。方法可用于海水中CPs类化合物的快速筛查和确证分析。

Abstract

A rapid,sensitive and accurate method for the simultaneous determination of 5 kinds of chlorophenols(CPs) in seawater samples by dispersive magnetic solid phase extraction-liquid chromatography(dMSPE-HPLC) was developed.The seawater samples were firstly enriched with pentachlorophenol-imprinted amino-functionalized nano-Fe3O4-polymer magnetic composite material(nFe3O4@MIPNH2-polymer),then separated on a C8 analytic column(250 mm×4.6 mm×5.0 μm) using methanol-NH4Ac solution(70∶30) as mobile phase and detected at 230 nm via UV detector.The results showed that under the optimal condition,the calibration curves were linear in the range of 1-5000 ng/L with correlation coefficients(r2) higher than 0.9989 for target chlorophenols.The spiked recoveries were between 86.5% and 98.8% with relative standard deviations(RSDs) of 0.8%-8.6%.The limits of detection(LODs) were in the range of 0.18-1.20 ng/L and the limits of quantitation(LOQs) were between 0.6 ng/L and 4.0 ng/L.The developed method could be applied in the routine analysis of chlorophenols in seawater samples.

关键词

氨基功能化分子印迹磁性材料氯酚类污染物海水基质分散-磁性固相萃取

Keywords

amino-functionalizedmolecular-imprinted magnetic materialchlorophenolsseawaterdispersive solid phase extraction(dMSPE)

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