通过国内外生态毒理数据库(ECOTOX、eTOX、ECHA和eChemPortal)和公开发表的文献(如Web of Science、中国知识基础设施工程、万方知识服务平台和中国知网(CNKI)等)搜集和筛选了Co对动物、植物和微生物的毒性数据。筛选条件为:(1)毒性数据基于高等植物、无脊椎动物的存活、生长、繁殖或土壤微生物的呼吸、硝化作用、矿化作用、生长、酶活性(基于土壤微生物群中多个物种的实验)等评价终点;(2)毒理学试验以自然或人工土壤为介质并依据标准程序进行,不包括水培条件下的实验;(3)试验中重金属为单一污染源,若有其他污染物或杂物影响的毒性则该数据不予采纳;(4)必须附有土壤必要性质参数(如pH、OC含量和CEC等);(5)有重复试验和浓度梯度,试验结果有ECx值或可以通过原始数据推导得出ECx。
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