Research Centre for Residue and Quality Analysis, Sher-e-Kashmir University of Agricultural Sciences and Technology (SKUAST-K), Srinagar, J&K, India.
J Sep Sci. 2018 May;41(9):1990-1994. doi: 10.1002/jssc.201701150. Epub 2018 Feb 23.
Residue investigation was carried out to scrutinize the persistence, dissipation behavior, half-life, and risk assessment of ethion on green pea fruit by spraying ethion at the fruiting stage followed by another application at 10 day intervals. The samples were extracted by using a quick, easy, low-cost, effective, rugged, and safe method, and the residues of ethion were analyzed by gas chromatography with electron capture detection. Here we report a novel, accurate, and cost-effective gas chromatography method for the determination of average deposits of ethion on green pea. The initial deposits were found to be 4.65 mg/kg following the application of insecticide. Residues of ethion reached below the detection limit of 0.10 mg/kg after 25 days at recommended dosage. The half-life of ethion was found to be 4.62 days. For risk assessment studies, the 25th day will be safe for consumers for the consumption of green peas. The developed method is simple, sensitive, selective, and repeatable and can be extended for ethion-based standardization of herbal formulations containing green pea and its use in pesticide industries.
残留调查旨在通过在结果期喷洒乙硫磷，然后每隔 10 天再喷洒一次，仔细研究乙硫磷在绿豌豆果实上的持久性、消解行为、半衰期和风险评估。采用快速、简便、低成本、有效、坚固和安全的方法提取样品，并采用带有电子俘获检测的气相色谱法分析乙硫磷残留。在这里，我们报告了一种新颖、准确且具有成本效益的气相色谱法，用于测定绿豌豆上乙硫磷的平均沉积量。施药后初始沉积量为 4.65mg/kg。按照建议的剂量使用 25 天后，乙硫磷残留量降至 0.10mg/kg 以下检测限。乙硫磷的半衰期为 4.62 天。对于风险评估研究，第 25 天对于消费者食用绿豌豆来说是安全的。所开发的方法简单、灵敏、选择性强且可重复，可扩展用于基于乙硫磷的绿豌豆及其在农药行业中的草药制剂标准化。
