有机污染物在鱼体内临界浓度研究进展

发布时间：2018-04-23 15:10

本文选题：有机污染物 + 临界浓度　；参考：《科学通报》2015年19期

【摘要】：临界浓度反映的是有机污染物对生物体的体内毒性效应,是评价有机污染物对水生生物毒性的一个重要指标,对水生环境风险评价具有重要的意义.本文根据目前国内外在该领域的研究现状和本课题组的研究成果,系统地总结了有机污染物在鱼体内临界浓度的计算方法,不同毒性作用模式下的临界浓度、生物富集因子与临界浓度的关系以及影响临界浓度的因素.目前研究结果表明,麻醉型化合物在鱼体内临界浓度在较窄一个范围内变化,趋近于常数,非极性麻醉型化合物的临界浓度要高于极性麻醉型,反应型化合物的临界浓度低于麻醉型化合物;有机污染物在鱼体内的临界浓度与生物富集过程密切相关;生物富集因子与疏水性的关系,生物有机体的大小、脂含量,化合物的暴露时间,代谢转化及毒性数据测定的准确性都会对临界浓度的测定或计算产生影响.
[Abstract]:The critical concentration reflects the toxic effect of organic pollutants on organisms in vivo and is an important index to evaluate the toxicity of organic pollutants to aquatic organisms. It is of great significance to the risk assessment of aquatic environment. According to the current research situation in this field at home and abroad and the research results of our group, this paper systematically summarizes the calculation methods of the critical concentration of organic pollutants in fish, and the critical concentration under different toxic action modes. The relationship between bioconcentration and critical concentration and the factors affecting critical concentration. The present study shows that the critical concentration of anesthetic compounds in fish varies within a narrow range and approaches to constant, and the critical concentration of nonpolar anesthetic compounds is higher than that of polar anesthetic. The critical concentration of reactive compounds is lower than that of anesthetic compounds; the critical concentration of organic pollutants in fish is closely related to the process of bioaccumulation; the relationship between bioconcentration factor and hydrophobicity, the size of biological organism, the content of lipid, The exposure time, metabolic transformation and the accuracy of toxicity data can affect the determination or calculation of critical concentration.
【作者单位】：东北师范大学环境学院国家环境保护湿地生态与植被恢复重点实验室;
【基金】：国家自然科学基金(21377022)资助
【分类号】：X171.5;X826

【共引文献】