气相色谱-质谱联用法测定玉米汁中敌敌畏和 马拉硫磷的含量

Determination of dichlorvos and malathion in corn beverage by gas chroma-tography-mass spectrometry

中文关键词:  玉米汁  敌敌畏  马拉硫磷  气相色谱-质谱联用法

英文关键词:corn beverage  dichlorvos  malathion  gas chromatography-mass spectrometry

中文摘要:

      目的 建立高灵敏度、精确度的敌敌畏和马拉硫磷的检测方法。方法 利用DB-17MS(30 m×0.25 mm, 0.25 μm)色谱柱及气质联用色谱建立敌敌畏和马拉硫磷的检测条件, 确定检出物的保留时间, 绘制基于含量-峰面积线性关系的标准曲线。测定长春市市售玉米汁中的敌敌畏、马拉硫磷的含量, 并根据标准曲线对结果进行分析计算。结果 敌敌畏、马拉硫磷的标准曲线分别为: Y=0.0096X2+44.561X-100.48, Y =0.0023X2+ 36.339X+341.95, 相关系数均为0.9999。长春市售玉米汁中未检出敌敌畏、马拉硫磷。结论 本方法准确、可靠, 可为玉米汁中有毒有害物质的检验提供参考。

英文摘要:

      Objective To establish a sensitive and accurate method for the determination of dichlorvos and malathion. Methods The method for determination of dichlorvos and malathion was established by gas chromatography-mass spectrometer (GC-MS) with DB-17 MS chromatographic column (30 m×0.25 mm, 0.25 μm). Retention time of dichlorvos and malathion were confirmed. Standard curves of dose-peak area linear relationship were also developed. Dichlorvos and malathion in corn beverage which sold in Changchun were determinated. Results Standard curves of dichlorvos and malathion were Y=0.0096X2+44.561X-100.48 (r=0.9999) and Y=0.0023X2+36.339X+341.95 (r=0.9999), respectively. Dichlorvos and malathion in corn beverage which sold in Changchun were not found. Conclusion The method is accurate and reliable, and can provide references for the determination of hazardous chemicals in corn beverage.