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有机氯农药残留检测的快速样品前处理效果研究 |
Effect of QuEChERS Pretreatment on Organochlorine Pesticide Residue Detection |
投稿时间:2016-04-27 修订日期:2016-06-30 |
DOI:10.16495/j.1006-3757.2016.03.005 |
中文关键词: 快速样品前处理技术 有机氯 农药残留检测 前处理 |
英文关键词:QuEChERS organochlorine detection of multiple pesticide residue pretreatment |
基金项目:四川省2014年农产品质量安全例行抽检项目资助(川农业函[2014]16号) |
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中文摘要: |
应用快速样品前处理技术(QuEChERS)与《NY/T 761-2008蔬菜和水果中有机磷、有机氯、拟除虫菊酯和氨基甲酸酯类农药多残留的测定法》(NY/T 761-2008)的前处理方法处理农产品样本,采用气相色谱检测多种农产品中有机氯农药残留量. 分析了QuEChERS法前处理用于有机氯农残检测的效果. 结果表明:QuEChERS法前处理测定18种有机氯农药残留加标回收率在72.1%~123.9%之间,RSD在0.5%~19.1%之间,有72.2%的农药检出限大于等于NY/T 761-2008方法,只有 |
英文摘要: |
The pretreatment methods described by quick, easy, cheap, effective, rugged, and safe (QuEChERS) and NY/T 761-2008 were used to treat several tested agricultural samples, then the residue of organochlorine pesticide content of the tested samples was determined by gas chromatography, and the detection results were compared. The results showed that, the average spiked recoveries of the 18 residues of organochlorine pesticides of tested vegetable samples ranged from 72.1%~123.9%, with the relative standard deviations of 0.5%~19.1%. 72.2% of the pesticides detection limits (LODs) were above or equal to NY/T 761-2008 method, only 27.8% were below the NY/T 761-2008 method. The analysis results of several vegetable materials confirmed that the pretreatment by QuEChERS can meet the requirement of determination methods for multi-pesticide residue analysis by GC, and accurate and reliable results were obtained. Due to the low consumption of organic solvent, fast processing rate, strong selectivity, high recovery, high precision and strong practicality, when the pretreatment of QuEChERS could replace of NY/T 761-2008 in the detection of organochlorine pesticide residues in general cases. |
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