GC-MS測定土壤中阿特拉津、六氯苯等十種農(nóng)藥殘留

摘要： 建立了氣相色譜-質(zhì)譜-選擇離子監(jiān)測(GC-MS-SIM)同時(shí)測定土壤中10種農(nóng)藥(三嗪類除草劑、酰胺類除草劑和有機(jī)氯農(nóng)藥)的多殘留分析方法.樣品采用正己烷/丙酮(1:1,V/V)超聲提取、氟羅里硅土柱層析凈化、GC-MS-SIM測定.10種農(nóng)藥在0.01(0.02)-1.0(2.0)mg·l~(-1)范圍內(nèi)線性良好,相關(guān)系數(shù)介于0.9963-0.9998之間;在10,50和250 ng·g~(-1)添加水平下,平均回收率介于81%-117%之間,相對標(biāo)準(zhǔn)偏差均小于14.4%;方法檢出限達(dá)到ppb至sub-ppb級(0.1-1.3 ng·g~(-1)).將此方法應(yīng)用于遼寧省不同性質(zhì)土壤中70個(gè)實(shí)際土壤樣品的分析,阿特拉津、乙草胺、六氯苯、丁草胺、狄氏劑和艾氏劑有檢出,該法對不同性質(zhì)土壤具有廣泛適用性. Abstract： A gas chromatography-mass spectrometry-selected ion monitoring(GC-MS-SIM) method has been developed for multi-residue analysis of 10 pesticides (triazine herbicides, chloroacetanilide herbicides and organochlorine pesticides) in soil. The method is based on ultrasonic extraction using hexane/acetone (1: 1, V/V), florisil cleanup and GC-MS-SIM determination. The linear ranges of the 10 pesticides were 0.01 (0.02) 1.0 (2.0) mg·l~(-1), and the correlation coefficients were 0.9963-0.9998. The average recoveries of the 10 pesticides at the three spiked levels(10, 50, 250 ng · g~(-1)) ranged from 81% to 117% with good precision (< 14.4%) . Pesticides residues could be detected in the low- to sub-ppb range (0.1-1.3 ng · g~(-1)) . This methodology has been applied to analysis of 70 real soil samples of different characteristics from Liaoning Province in which atrazine, acetochlor, hexachlorobenzene, butachlor, dieldrin and aldrin were detected. It is widely applicable for soil of different properties. 作 者： 王萬紅    王顏紅    王世成    張紅    王瑩    曾青    WANG Wan-hong    WANG Yan-hong    WANG Shi-cheng    ZHANG Hong    WANG Ying    ZENG Qing   作者單位： 王萬紅,WANG Wan-hong(中國科學(xué)院沈陽應(yīng)用生態(tài)研究所,沈陽,110016;中國科學(xué)院研究生院,北京,100049)

王顏紅,王世成,張紅,王瑩,曾青,WANG Yan-hong,WANG Shi-cheng,ZHANG Hong,WANG Ying,ZENG Qing(中國科學(xué)院沈陽應(yīng)用生態(tài)研究所,沈陽,110016) 

期 刊： 環(huán)境化學(xué)  ISTICPKU   Journal： ENVIRONMENTAL CHEMISTRY  年，卷(期)： 2009, 28(6)  分類號： X13  關(guān)鍵詞： 除草劑    有機(jī)氯農(nóng)藥    土壤    質(zhì)譜    多殘留分析.    Keywords： herbicide    organochlorine pesticides    soil    mass spectrometry    multi-residue analysis.   

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