气相色谱-串联质谱法测定稻谷中的农药残留

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关键词：稻谷；气相色谱－串联质谱法；农药残留；检测方法

中图分类号：TS207.3 文献标志码：A 文章编号：1674-0270（2026）01-0085-04

DOI： 10.16043/j.cnki.cfs.2026.01.022

Determination of Pesticide Residues in Rice by Gas Chromatography-Tandem Mass Spectrometry

LIU Hongming'， FENG Xue 2* ， XIA Yinqiong²，LU Zhijin² （1. Guangyuan Agricultural Products Quality and Safety Center， Guangyuan 628O17， China; 2. Guangyuan Municipal Agriculture and Rural Affairs Bureau， Guangyuan 628O17， China）

Abstract：This paper aims to establish arapidand accurate analytical method forthedeterminationoffive pesticide residues in rice. The samples were immersed in water and extracted with acetonitrile-acetic acid solution. After purification，they were dried with nitrogenandreconstituted.They were separated byHP-5MSchromatographic column and detected by gas chromatography-tandem mass spectrometer in multi-reaction monitoring mode. Method validation was carriedoutinterms of linearity，limitofdection，limitofquantification，recoveryrateand precision.Resultsshow， within theconcentration rangeof O.O05～0.50O mg/kg，the five pesticides show excellent linearity，with acorrelation coefcient exceeding 0.9977.The limits of detection and quantification are 0.000 05～0.00549 mg/kg and 0.00 16～ 0.018 32 mg/kg respectively，both of whichare lower than the limit of quantification requirements stipulated in corresponding standards.At the three spikedconcentrations of 0.05，0.10，andO.2O mg/kg，the recoveries rang from （204号 55% to 106% ，and the relative standard deviations are from 0.42% to 11.11% . In the precision test， the relative standard deviations do not exceed 18% ，and the absolute differences between the two independent measurement results meet the repeatabilitylimit requirements stipulated inthestandard.This methodfeatures simple pretreatment，sensitive detection， accurate and reliable results，and can meet the daily detection requirements for pesticide residues in rice.

Key Words： rice; gas chromatography-tandem masspectrometry; pesticide residues; detection method

稻谷是我国种植面积最广、总产量最高的核心粮食作物之一，年种植面积超3000万公顷，年产量连续多年稳定在2亿吨以上，作为近 60% 人口的主食来源，不仅承载着保障国家粮食安全的重要使命，更是维系民众日常膳食结构的关键食材[1-2]。（剩余4532字）