表面活性剂十二烷基苯磺酸钠（SDBS）和十二烷基磺酸钠（SDS）对安氏伪镖水蚤的急性毒性研究(Acute Toxicity of Sodium Dodecyl Benzene Sulfonate（SDBS）and Sodium Dodecyl Sulfate（SDS）to the Copepod, Pseudodiaptomus annandalei)

为探讨表面活性剂成分对海洋桡足类生物的影响,测定了十二烷基苯磺酸钠(SDBS)和十二烷基磺酸钠(SDS)对安氏伪镖水蚤(Pseudo-diaptomus annandalei Sewell)的急性毒性作用.结果表明,SDBS对安氏伪镖水蚤雌体24h、48h、72h和96h的半致死浓度LC50分别为2.40、1.67、1.59和1.58mg·L-1,而对雄体分别为1.84、1.54、1.41和1.40mg·L-1;SDS对雌体24h、48h、72h和96h的LC50分别为54.33、30.85、25.21和15.85mg·L-1,对雄体分别为18.48、13.55、10.51和8.50mg·L-1;SDBS对雌体和雄体的安全浓度分别为0.24mg·L-1和0.32mg·L-1,而SDS对雌体和雄体的分别为2.98mg·L-1和2.19mg·L-1.结果显示,对安氏伪镖水蚤而言,SDBS比SDS的毒性更强;以半致死浓度LC50为参考依据,安氏伪镖水蚤雄体均比雌体对这两种表面活性剂敏感.

Acute Toxicity of Sodium Dodecyl Benzene Sulfonate (SDBS)and Sodium Dodecyl Sulfate (SDS)to the Copepod, Pseudodiaptomus annandalei

In order to explore the effect of component of surfactant on the copepod,we evaluated the acute toxicity of Sodium dodecyl benzene sulfonate(SDBS)and Sodium dodecyl sulfate(SDS)to the Pseudodiaptomus annandalei Sewell,which distributes widely in the seacoast and estuary.Results showed that the 24h,48h,72h and 96h LC50 values of SDBS for the female were 2.40,1.67,1.59 and 1.58mg·L-1,respectively.And the 24h,48h,72h and 96h LC50 values of SDBS for the male were 1.84,1.54,1.41 and 1.40mg·L-1,respectively.In the same way,the 24h,48h,72h and 96h LC50 values of SDS for the female were 54.33,30.85,25.21 and 15.85mg·L-1,respectively.And the 24h,48h,72h and 96h LC50 values of SDS for the male were 18.48,13.55,10.51 and 8.50mg·L-1,respectively.The results indicated that the safe concentration values of SDBS to the female and the male were 0.24 and 0.32mg·L-1,and values of SDS were 2.98 and 2.19mg·L-1,respectively.The results also indicated that the male was more sensitive than the female to either SDBS or SDS.At the same time,toxicity of SDBS was higher than that of SDS to P.annandalei according to LC50.