An Accelerated Solvent Extraction-Solid Phase Extraction-Gas Chromatography/Mass Spectrometry Method for Determination of 18 Pesticides in Paddy

ZHANG Xiao-ting; PAN Jian-jun; ZHONG Yun; ZHUANG Yi-fei; FENG Qing-qing; YE Shu-juan

doi:10.16495/j.1006-3757.2018.01.007

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Article Navigation > Analysis and Testing Technology and Instruments > 2018 > 24(1): 39-46

ZHANG Xiao-ting, PAN Jian-jun, ZHONG Yun, ZHUANG Yi-fei, FENG Qing-qing, YE Shu-juan. An Accelerated Solvent Extraction-Solid Phase Extraction-Gas Chromatography/Mass Spectrometry Method for Determination of 18 Pesticides in Paddy[J]. Analysis and Testing Technology and Instruments, 2018, 24(1): 39-46. doi: 10.16495/j.1006-3757.2018.01.007

Citation:

ZHANG Xiao-ting, PAN Jian-jun, ZHONG Yun, ZHUANG Yi-fei, FENG Qing-qing, YE Shu-juan. An Accelerated Solvent Extraction-Solid Phase Extraction-Gas Chromatography/Mass Spectrometry Method for Determination of 18 Pesticides in Paddy[J]. Analysis and Testing Technology and Instruments, 2018, 24(1): 39-46. doi: 10.16495/j.1006-3757.2018.01.007

Citation:

ZHANG Xiao-ting, PAN Jian-jun, ZHONG Yun, ZHUANG Yi-fei, FENG Qing-qing, YE Shu-juan. An Accelerated Solvent Extraction-Solid Phase Extraction-Gas Chromatography/Mass Spectrometry Method for Determination of 18 Pesticides in Paddy[J]. Analysis and Testing Technology and Instruments, 2018, 24(1): 39-46. doi: 10.16495/j.1006-3757.2018.01.007

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An Accelerated Solvent Extraction-Solid Phase Extraction-Gas Chromatography/Mass Spectrometry Method for Determination of 18 Pesticides in Paddy

doi: 10.16495/j.1006-3757.2018.01.007

1.
Huzhou Entry-Exit Inspection and Quanrantine Bureau of P. R. C, Huzhou 313000, Zhejiang China
2.
Huzhou Teachers College, Huzhou 313000, Zhejiang China

Received Date: 2018-02-05
Rev Recd Date: 2018-03-29
Publish Date: 2018-03-01

Abstract

Abstract

A gas chromatography/mass spectrometry(GC/MS) method was established for the determination of 18 pesticides in paddy based on the accelerated solvent extraction (ASE) method:in the 30 mL extraction pool under a pressure of 10.34 MPa, heating for 5 min at 80℃, and static extracting with acetonitrile for 3 min, cycling for 2 times, then washing the extraction pool with acetonitrile of 60% of the pool volume, then purging for 100 s with nitrogen. And then a solid phase extraction (SPE) column with an extraction rate of 1 drop/second was used for the purification of sample. In this method, the samples were first extracted with acetonitrile, and then purified by SPE column and evaporated to dryness in a rotary evaporator. The pretreated samples were re-dissolved in n-hexane to a constant volume for the determination by GC/MS. Linear relationships between values of peak area and mass concentration of 18 pesticides were found in the range of 0.05~1.0 μg/mL, all of their linear correlation coefficients were more than 0.99. The limits of detection were 0.104~0.647 mg/kg, and the minimum quantitative limits were 0.276~1.724 mg/kg. The spiked recoveries were between 82.5%~105.1%, and the RSDs were between 1.5%~6.4%. The method is suitable for the determination of 18 pesticides in paddy.
- ASE,
- SPE,
- GC/MS,
- paddy,
- pesticides

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References(14)

References

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