Hernández Torres M E, Egea González F J, Castro Cano M L, Moreno Frías M, Martínez Vidal J L
Department of Analytical Chemistry, University of Almería, 04071 Almería, Spain.
J Agric Food Chem. 2002 Feb 27;50(5):1172-7. doi: 10.1021/jf0108112.
The diminution of methamidofos, malathion, and methiocarb in different crops grown in greenhouses has been studied, including the presence of metabolites such as malaoxon, methiocarb sulfoxide, and methiocarb sulfone. The analytical method is based on dichloromethane extraction and GC-PFPD analysis. It has been validated establishing performance parameters such as recovery rates, precision, linear ranges, and limits of detection and quantification, which are low enough for ensuring that their corresponding MLRs can be adequately quantified. Samples of treated cucumbers and peppers grown in greenhouses were collected and analyzed during a 15-day period for obtaining the diminution rates of methamidofos and malathion. The behavior of methiocarb in treated green beans and tomatoes has been studied using analysis of variance (ANOVA) as the statistical tool, for establishing the influence of crop, season, application dose, and greenhouse design.
研究了温室种植的不同作物中甲胺磷、马拉硫磷和灭多威的消解情况，包括其代谢产物如马拉氧磷、灭多威亚砜和灭多威砜的存在情况。分析方法基于二氯甲烷萃取和气相色谱 - 脉冲火焰光度检测（GC - PFPD）分析。该方法通过确定回收率、精密度、线性范围以及检测限和定量限等性能参数进行了验证，这些参数足够低，以确保能够充分定量其相应的最大残留限量（MLRs）。在15天的时间内收集并分析了温室中种植的经处理的黄瓜和辣椒样本，以获得甲胺磷和马拉硫磷的消解率。使用方差分析（ANOVA）作为统计工具，研究了灭多威在经处理的青豆和西红柿中的行为，以确定作物、季节、施用量和温室设计的影响。
