气相色谱—双塔双柱检测系统在蔬菜水果农药残留检测上的应用
摘要[目的] 利用检测技术,更快、更有效地控制蔬菜水果的农药残留量问题。[方法]蔬菜水果样品经乙腈提取、浓缩、净化后,采用GC-2010双塔双柱系统,搭配双FPD检测器对其中的有机磷农药残留进行分离和检测。[结果]试验得出,供试蔬菜水果中农药在0.02~0.20 mg/L浓度范围内标准曲线线性良好,相关系数均在0.994 0以上,样品加标回收率在70%~120% ,0.1 mg/L标样连续5次进样,峰面积RSD值均小于8.0%,精密度良好。[结论] 该试验方法缩短了样品分析时间,方法简单、高效,定性定量更加准确可靠。
关键词 气相色谱;双塔双柱检测系统;蔬菜水果;农药残留;应用
中图分类号 S413 文献标识码 A 文章编号 0517-6611(2015)22-214-02
Abstract [Objective] Using detection technology to fast and efficient control pesticide residues in vegetables and fruits. [Method] After acetonitrile extraction, concentration and purification, using GC-2010 twin towers dual column system, combined with FPD detector, organophosphorus pesticide residues in vegetables and fruits were separated and detected. [Result] The standard curve linear relationship is good when pesticide in 0.02-0.20 mg/L, the correlation coefficient is above 0.994 0, sample recovery ratio is 70%-120%, adding 5 times of 0.1 mg/L, peak area RSD value is less than 8.0%, the precision degree is good. [Conclusion] The test method shorten samples analysis time, which is simple, high efficient and accurate.
Key words Gas chromatography; Twin towers dual column detection system; Vegetables and fruits; Pesticide residues; Application
随着人们生活水平的提高,消费者对农产品的要求越来越高,不仅要求营养丰富,更注重产品安全。农产品的质量安全问题受到全社会的高度关注,而农产品中的农药残留又是其中一...
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