50% 二氰蒽醌悬浮剂对环境生态毒理及安全性评价

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Evaluation of Environmental Ecotoxicology and Safety of 50% Dicyanoanthraquinone Suspension Agent

Yu1 ，LINHongfang'，YANGLijing'，LIU Siyu1，GUO Yongze'，ZHANG Yutingl

InstituteofAgro-productSafetyandNutrition，TianjinAcademyofAgricultural Sciences，Tianjin3Oo381，China）

Abstract：Toasess theenvironmentalimpactofdichloanthraquinone，relevantregulatorydocumentsonchemicalpesticideevionmental evaluationandpesticideregistrationenvironmentalasessmentwereusedtoconductacutetoxicitytestsonmodelorganisms. The results showed that the 96-hour acute LC50 of 50% dicyanoanthraquinone suspension for zebrafish was determined to be O.057 2 mg·a.i. ⋅L-1 ，which was classified as highly toxic.The 48-hour acute ∠C450 of 50% dicyanoanthraquinone suspension for Daphnia magna was measured at 0.174 0mg⋅a.i.⋅L-1 ，also categorized as highly toxic.For quail of 50% dicyanoanthraquinone suspension，the acute oral LD 50 was calculated as 510.9mg⋅a.i.（kg⋅bw）-1 ，indicating low toxicity.However，long-term avian exposure risks of 50% （20 dicyanoanthraquinonesuspensionundersprayingscenarioswereidenifiedasunaceptable，leadingtoarecommendationthataPro hibited in Bird Sanctuaries"label be applied.Regarding silkworms，the 96-hour acute LO 50 was shown to exceed 2 000 mg*a.i. ⋅L-1 （low toxicity），but spray drift risks of 50% dicyanoanthraquinone suspension to mulberry trees necessitated a "Prohibited near sericulture facilitiesandmulberrygardens"advisoryInconclusion，theupdatingofaessmenttoolsandthesystematicevaluationofpesticide contaminationcharacteristicsandexposurelevelsareconsideredcriticalforsafetyenhancementandthestablishmentofsientficisk assessment models.

Key words： dicyanoanthraquinone; model organism; acute toxicity; environmental risk assessment

二氰蒽醌（dicyanoanthraquinone）又称二噻农，其化学名称为2，3-二腈基-1，4-二硫代蒽醌。（剩余16669字）