Ottaviani M, Crebelli R, Fuselli S, La Rocca C, Baldassarri L T
Laboratorio di Igiene Ambientale, Istituto Superiore di Sanita, Roma, Italy.
Ecotoxicol Environ Saf. 1993 Aug;26(1):18-32. doi: 10.1006/eesa.1993.1037.
Digested sludges from a wastewater treatment plant were analyzed to assess their level of contamination by some organic (polychlorobiphenyls (PCBs) and chlorinated pesticides) and inorganic (heavy metals) micropollutants and their mutagenicity features. The heavy metal content in none of the samples exceeded the limits set out in EEC Directive 276/86; as far as PCBs are concerned, the sludges analyzed indicated a level of contamination up to two orders of magnitude higher than some Italian agricultural soils. Mutagenicity assays on either crude or fractionated sludge extracts using Salmonella typhimurium tester strains TA98 and TA100 gave negative results, thus suggesting the absence of genotoxic contaminants in the samples investigated.
对一家污水处理厂的消化污泥进行了分析，以评估其受某些有机（多氯联苯（PCBs）和氯化农药）和无机（重金属）微污染物的污染程度及其致突变性特征。所有样品中的重金属含量均未超过欧洲经济共同体第276/86号指令规定的限值；就多氯联苯而言，所分析的污泥表明其污染程度比一些意大利农业土壤高出两个数量级。使用鼠伤寒沙门氏菌测试菌株TA98和TA100对粗污泥提取物或分级污泥提取物进行的致突变性试验均得出阴性结果，因此表明在所研究的样品中不存在基因毒性污染物。
