50% 二氰蒽醌懸浮劑對環(huán)境生態(tài)毒理及安全性評價
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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）又稱二噻農，其化學名稱為2，3-二腈基-1，4-二硫代蒽醌。（剩余16669字）