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采用手动背负式喷雾器,在草莓温室中均匀施用75%百菌清可湿性粉剂,通过贴片法分析了施药者及果实采收者的人体暴露量,研究了草莓温室施用百菌清对操作人员的职业暴露风险。结果表明:在草莓温室中施用百菌清,对施药者人体暴露的施药液量为19.2~46.6 mL/h,平均为30.2 mL/h,主要暴露部位为小腿;采收果实时,施药后第1天采收者人体暴露的施药液量为3.8 mL/h,第7天时为0.027 mL/h,主要暴露部位均为手部。在本研究暴露条件下,施药者的安全限值(MOS)为0.258,表明该暴露环境对施药者存在风险;施药后1~7 d,采收者的MOS值均>1,表明该暴露环境对采收者人体暴露为安全。研究表明,在草莓温室中施用百菌清,对田间操作人员存在职业暴露风险,因此应注意加强防护措施,或缩短暴露时间;采收时,对采收者无职业暴露风险,但应对主要暴露部位手部加强防护。
A manual knapsack sprayer was used to apply 75% chlorothalonil WP evenly in the strawberry greenhouse. Human exposure of the pesticide applicators and fruit harvesters was analyzed by patch method. The effects of chlorothalonil on strawberry greenhouse were studied. Occupational exposure to personnel risk. The results showed that chlorothalonil applied in the strawberry greenhouse was 19.2 ~ 46.6 mL / h, with an average of 30.2 mL / h and the main exposure site was calf. When harvesting fruit, On the first day after drug exposure, the human body was exposed to 3.8 mL / h of liquid and 0.027 mL / h on day 7, with the main exposed parts being hands. Under the conditions of this study, the safety limit (MOS) of applicants was 0.258, indicating that the exposure environment poses a risk to the applicants. From 1 to 7 days after application, the MOS value of the harvesters was> 1, indicating that The exposed environment is safe for the human body of the harvester. Studies have shown that chlorothalonil applied in strawberry greenhouses is at a risk of occupational exposures to field operators and therefore should be taken to strengthen protective measures or to shorten the exposure time; there is no risk of occupational exposure to harvesters during harvest, but the main exposure should be addressed Part of the hand to strengthen protection.