稻米中丙草胺农药残留消解规律及膳食风险评估

ZHANG Zhi-tao,LOU Yu-hao,YUE Shi-bo, SHI Ran,CAO Dong-mei

Cereals & Oils(2023)

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Abstract
在黑龙江及河南两地进行丙草胺在稻米中的残留试验,通过气相色谱法检测丙草胺的残留量,探究其消解规律及最终残留量,并评估膳食摄入风险.结果表明:丙草胺在植株、土壤、田水、稻米中的回收率为74.8%~101.1%,相对标准偏差(RSD)为5.1%~18.1%;丙草胺在植株、土壤、田水中的降解半衰期分别为黑龙江14.9、13.6、2.2 d,河南8.8、7.3、2.2 d;以不同施药量施药2~3次,在不同收获时间下,稻米中丙草胺残留量最高为0.177 mg/kg,膳食摄入风险熵为1.39%~3.61%,表明该稻谷膳食摄入风险低,处在安全水平.
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