滇池烷基苯磺酸钠的分布,降解及对鲤鱼的危害效应

研究表明滇池水中ＬＡＳ含量为０．０１８～０．０２９ｍｇ／ｌ，局部水域达０．２～０．７ｍｇ／ｌ；ＡＢＳ强烈地吸附在底质中，以湖体呈曲线分布，平均含量高达０．４３ｍｇ／ｋｇ，１６ｈ内ＬＡＳ动态降解率比静态降解率高２．２倍，不同浓度的ＬＡＳ对滇池鲤鱼的结果表明，５～３５ｍｇ／ｌ浓度水中，溶解氧下降，ｐＨ值升高，产生急性危害效应，半致死浓度４８ＴＬ５０为３．０ｍｇ／ｌ，完全浓度为０．３ｍｇ／ｌ。当ＬＡＳ含

Distribution and Degradation of Alkyl Benzene Sulfonate in Dianchi Lake and Its Harmful Effect to Carps

In this paper,LAS content in the water of Dianchi Lake was 0.018-0.029mg/l,and it reached 0.2-0.7mg/l in the parts of the Lake.ABS was strongly absorbed in the bottom,and distributed along axis in the lake,its average content reached 0.43mg/kg.In 16 hours dynamic degradation rate of LAS was 2.2 times higher than static degradation rate.Harmful result of LAS in different concentration to carps in Dianchi Lake indicated that,in 5-35mg/l LAS water,DO went down,pH value went up,and acute harmful effect produced.Semi lethality concentration,48TL 50 ,was 3.0mg/l,safe concentration was 0.3mg/l.When LAS content was over 1.5mg/l,hatch rate of egg decreased,terateger rate increased,and death rate went up.Therefore the countermeasures of Dianchi Lake protection and carps aquiculture development were put forward.