栖息于铅利用工厂的库蚊幼虫的铅含量
Lead levels of Culex mosquito larvae inhabiting lead utilizing factory.
作者信息
Kitvatanachai S, Apiwathnasorn C, Leemingsawat S, Wongwit W, Overgaard H J
机构信息
Faculty of Medical Technology, Rangsit University, Thailand.
出版信息
Asian Pac J Trop Biomed. 2011 Jan;1(1):64-8. doi: 10.1016/S2221-1691(11)60070-1.
OBJECTIVE
To determine lead level primarily in Culex quinquefasciatus (Cx. quinquefasciatus), and Culex gelidus (Cx. gelidus) larvae inhabiting lead consuming factories, and to putatively estimate eco-toxicological impact of effluents from the firms.
METHODS
Third instars larvae were sampled by standard dipping method and lead concentrations in the larvae and their respective surrounding factory aquatic environments were determined through standard atomic absorption spectrophotometry (AAS).
RESULTS
Cx. quinquefasciatus was the most abundant species followed by Cx. gelidus. The levels of lead were higher in the Cx. quinquefasciatus (1.08-47.47 µg/g), than in the wastewaters surface (0.01-0.78 µg/mL) from the factories or closer areas around factories. Other species were not reaching the criteria for lead determination.
CONCLUSIONS
The Cx. quinquefasciatus larvae can bio-accumulate the metal and can potentially serve as a biomarker of lead contamination, to complemente conventional techniques.
目的
主要测定栖息于铅消费工厂的致倦库蚊（Culex quinquefasciatus，简称Cx. quinquefasciatus）和环带库蚊（Culex gelidus，简称Cx. gelidus）幼虫体内的铅含量，并初步评估这些工厂废水的生态毒理学影响。
方法
采用标准浸渍法采集三龄幼虫，通过标准原子吸收分光光度法（AAS）测定幼虫及其各自周围工厂水生环境中的铅浓度。
结果
致倦库蚊是数量最多的物种，其次是环带库蚊。致倦库蚊体内的铅含量（1.08 - 47.47微克/克）高于工厂废水表面（0.01 - 0.78微克/毫升）或工厂周边区域。其他物种未达到铅含量测定标准。
结论
致倦库蚊幼虫能够生物累积这种金属，并有可能作为铅污染的生物标志物，以补充传统技术。
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