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Organophosphorus pesticides residues in Italian raw milk

机译:意大利原奶中的有机磷农药残留

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Organophosphorus pesticides (OPPs), widely used in agriculture, can cause toxic effects to humans and animals. The main purpose of the present work was to determine the contamination in raw milk by the main organophosphorus pesticides used in Italy and to evaluate the opportunity to start specific procedures of risk management along the milk production chain. The samples, collected in 4 Italian dairy plants directly from the tank trucks during the delivering, were representative of 920 tonnes of raw milk. The isolation of the OPPs (acephate, chlorpyriphos, chlorpyriphos-methyl, diazinon, methamidophos, methidathion, phorate, pirimiphos-methyl) was performed by liquid partition followed by clean-up with solid phase extraction. The analyses were carried out by dual column gas chromatography using two nitrogen-phosphorus detectors. Among the 135 samples analysed, 37 were positive in traces and 10 showed an OPP contamination ranging from 5 to 18 μg/kg. The higher results were recorded in the samples collected during the autumn-winter period. The main pollutants detected were acephate and chlorpyriphos. In every positive sample found, the OPP contamination was lower than the maximum residue level (MRL) fixed by the European Commission.
机译:广泛用于农业的有机磷农药(OPP)可能对人类和动物产生毒性作用。本工作的主要目的是确定意大利使用的主要有机磷农药对原奶造成的污染,并评估启动牛奶生产链中特定风险管理程序的机会。运送期间直接从罐车中的4个意大利乳制品厂中收集的样品代表了920吨原奶。通过液体分配进行固相萃取,然后进行分离,分离出OPPs(乙酰甲酸酯,毒死,、甲基毒死di,甲基二嗪农,甲胺磷,甲硫磷,甲酸酯,吡咯甲磷)。通过使用两个氮磷检测器的双柱气相色谱法进行分析。在所分析的135个样品中,有37个痕量呈阳性,其中10个的OPP污染范围为5至18μg/ kg。在秋冬季收集的样品中记录了更高的结果。检出的主要污染物为乙酰甲胺磷和毒死pho。在每个发现的阳性样本中,OPP污染均低于欧盟委员会确定的最大残留量(MRL)。

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