摘要
以白鲢(鱼种),罗非鱼(鱼种)、鲤(鱼种)、鲫(成鱼)、中华绒螯蟹(幼体)、克氏螯虾(成体)、蝌蚪等水生动物为材料,做银的毒性试验,同时分析含银水体中,鱼体内的银富集状况。试验结果表明:(1)银离子对这几种水生动物幼体的半致死浓度(LC_(50))仅在2—40ppb之间;但对成鱼的 LC_(50)要比幼体大得多。(2)在含银水体中,底层鱼类(如鲫)的银富集量最大的部位在内脏;上层鱼类(如?条)富集量最大的部位是鳃。鱼类中肌肉的富集量最小,其次是骨。
7 species ef fish and aqutic animal samples (silver carp, Tilapia,common carp, crucian carp, wooly handed crab, Cambarus and Tadpole)were bought and tested for the toxicity of Ag^+. Meanwhile fish samples were caught from theoxidation pond of cine--film factory in Wuxi for analysing the concentraction ofAg^+. The results indicated that: (1) All of these aquatic animals were toxicated byAg^+ at different degrees. LC_(50) of Ag^+ to their fries is within 2-40 ppb. Among themthe fry of silver carp is most sensitive to Ag^+. But sensitivity of adult fish to Ag^+ismuch lower than that of fries. (2) Viscera of bottom fish, e. g. crucian carp has thehighest consent of silver,and its concentration is about 144.07 ppm(DM) ,while theaccumulation times is 14407. Gill of upper layer fish, e.g. Haniculter has the contentabout 15.95ppm(DM), and the accumulation times is 1595. Mucle in all of fishsamples has lowest content of silver.
出处
《水产学报》
CAS
CSCD
北大核心
1991年第1期55-61,共7页
Journal of Fisheries of China
基金
国家自然科学基金
关键词
水生动物
银
毒性
富集
aquatic animal
silver
toxicity
accumulation
