Quantitation of Pesticide Residue in Water and Food in Louisiana, USA
Quantitation of Pesticide Residue in Water and Food in Louisiana, USA作者机构：School of Nutrition and Food Science AgCenter Louisiana State University Baton Rouge USA Agricultural Chemistry Department AgCenter Louisiana State University Baton Rouge USA Agricultural Chemistry Division Louisiana State Department of Agriculture and Forestry Baton Rouge USA
出 版 物：《Journal of Water Resource and Protection》 (水资源与保护（英文）)
年 卷 期：2016年第8卷第12期
页 面：1145-1157页
学科分类：09[农学] 0902[农学-园艺学] 090202[农学-蔬菜学]
主 题：Gas Chromatography Mass Spectrometry QuEChERS Cypermethrin Atrazine Pesticide FDA
摘 要：Pesticides can remain in the environment for decades and contaminate surface water that is used for irrigation of produce. This study examined pesticide residues in some surface waters and foods in Louisiana. Samples of 8 foods (tomato, corn, rice, blueberry, cucumber, cabbage, wheat and melon) and 35 surface waters were studied using a QuEChERS extraction method for food samples and liquid-liquid extraction method for the water samples. Gas chromatography-mass spectrometry was used to analyze water and food samples. Nine pesticides were detected in the surface water samples and 5 in the food samples. Pesticides detected in foods were below FDA tolerance limit but 0.18 ppm cypermethrin found in tomato was within 90% of the FDA limit (0.2 ppm). Four water samples had atrazine levels that were above the FDA limit for potable water. This study suggests the need to intermittently monitor pesticide contamination in our food and water.
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