Chinese Journal of Applied Chemistry ›› 2022, Vol. 39 ›› Issue (3): 470-479.DOI: 10.19894/j.issn.1000-0518.210279

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Determination of Aldicarb, Aldicarb Sulfoxide, Aldicarb Sulfone in Water by Solid Phase Extraction and UPLC⁃MS/MS with Isotope Dilution

Hui-Jing SUN(), Dong-Ni CUI   

  1. State Environmental Protection Key Laboratory of Monitoring and Analysis for Organic Pollutants in Surface Water,Jiangsu Provincial Environmental Monitoring Center,Nanjing 210019,China
  • Received:2021-06-09 Accepted:2021-09-02 Published:2022-03-01 Online:2022-03-15
  • Contact: Hui-Jing SUN
  • About author:516482697@qq.com
  • Supported by:
    Jiangsu Environmental Monitoring Research Fund Project 2019 (No.1909)

Abstract:

A method for analysis of aldicarb, aldicarb sulfoxide and aldicarb sulfone in water was developed using solid phase extraction and HPLC-MS/MS with isotope dilution. The aqueous samples were spiked with isotope-labeled internal standards aldicarb-D3, aldicarb sulfoxide-D3 and aldicarb sulfone-D3, concentrated and purified on an HLB cartridge, and then separated on a Waters ACQUITY UPLCTM BEH C18 column by gradient elution with 0.1% formic acid-5 mmol/L ammonium acetate-acetonitrile as the mobile phase. The analytes were detected by positive electrospray ionization with multiple reaction monitoring (MRM). The internal standard method was used to determine the results. There is a good linearity for target compounds in the range of 0.5~200 μg/L with the correlation coefficient (r) larger than 0.999. The method detection limit (MDL) is 0.0008~0.001 μg/L. The average recoveries range between 94.5%~105% at three different spiked levels. The relative standard deviation (RSD) is between 2.7%~6.5%. The method is sensitive and accurate, and is suitable for determination of aldicarb, aldicarb sulfoxide, aldicarb sulfone in water.

Key words: Aldicarb, Aldicarb sulfoxide, Aldicarb sulfone, Solid phase extration, Conversion, High performance liquid chromatography-mass spectrometry

CLC Number: