The studies have been carried out in laboratory on the effect of dyeing,electroplating, pesticide effluents and their intermixture on embryos of lefteye flounder (Paralichthys olivaceus ). The main toxic substances in...The studies have been carried out in laboratory on the effect of dyeing,electroplating, pesticide effluents and their intermixture on embryos of lefteye flounder (Paralichthys olivaceus ). The main toxic substances in dying effluent are aniline ( 20 mg/L ) andphenol ( 24 mg/L ). The main toxic substances in electroplating effluent are Zn ( 1 970 mg/L ). Cu (9 mg/L ) and Pb ( 7.5 mg/L ). The main toxic substances in pesticide effluent are monocrotophos andphosphite. The test results indicate that the lowest concentrations of dyeing, electroplating,pesticide effluents and their intermixture, having significant effect on the hatch rate anddevelopment of P. olivaceus embryos, are 0.5 %, 0.15 %, 0.25 % and 0.25 %, respectively; and theincipient LC_(50) of dyeing, electroplating, pesticide effluents and their intermixture are 3.38 % (2.29 %～3.87 % ), 0.81 % ( 0.71 % ～0. 92 % ). 1.57 % ( 1.37 %～1.82 % ) and 1.48 % ( 1.24 %～1.76% ). Based on the incipient LG_(50) values, the toxicity sequence of the three industrial effluentsis in the order of electroplating effluent > pesticide effluent > dyeing effluent.展开更多
采用静水试验法,在水温19.0±1.0℃的条件下,用Cu^(2+)、Hg^(2+)、Cd^(2+)3种重金属离子对体重1.2±0.16 g的单环刺蜢幼蜢进行了单一因子急性毒性试验.结果表明,3种重金属离子毒性大小依次为Hg^(2+)>Cu^(2+)>Cd^(2+),幼蜢...采用静水试验法,在水温19.0±1.0℃的条件下,用Cu^(2+)、Hg^(2+)、Cd^(2+)3种重金属离子对体重1.2±0.16 g的单环刺蜢幼蜢进行了单一因子急性毒性试验.结果表明,3种重金属离子毒性大小依次为Hg^(2+)>Cu^(2+)>Cd^(2+),幼蜢在3种重金属离子溶液中呈现出不同的生物学效应.Cu^(2+)对幼蜢的24 h、48 h LC_(50)分别为1.768、1.408 mg/L;Hg^(2+)的24h、48 h LC_(50)分别为1.097、0.770 mg/L;Cd^(2+)的24 h、48 h LC_(50)分别为2.084、1.789 mg/L.Cu^(2+)、Hg^(2+)、Cd^(2+)对幼蜢的安全浓度分别为0.141、0.077、0.179 mg/L.展开更多
文摘The studies have been carried out in laboratory on the effect of dyeing,electroplating, pesticide effluents and their intermixture on embryos of lefteye flounder (Paralichthys olivaceus ). The main toxic substances in dying effluent are aniline ( 20 mg/L ) andphenol ( 24 mg/L ). The main toxic substances in electroplating effluent are Zn ( 1 970 mg/L ). Cu (9 mg/L ) and Pb ( 7.5 mg/L ). The main toxic substances in pesticide effluent are monocrotophos andphosphite. The test results indicate that the lowest concentrations of dyeing, electroplating,pesticide effluents and their intermixture, having significant effect on the hatch rate anddevelopment of P. olivaceus embryos, are 0.5 %, 0.15 %, 0.25 % and 0.25 %, respectively; and theincipient LC_(50) of dyeing, electroplating, pesticide effluents and their intermixture are 3.38 % (2.29 %～3.87 % ), 0.81 % ( 0.71 % ～0. 92 % ). 1.57 % ( 1.37 %～1.82 % ) and 1.48 % ( 1.24 %～1.76% ). Based on the incipient LG_(50) values, the toxicity sequence of the three industrial effluentsis in the order of electroplating effluent > pesticide effluent > dyeing effluent.
文摘采用静水试验法,在水温19.0±1.0℃的条件下,用Cu^(2+)、Hg^(2+)、Cd^(2+)3种重金属离子对体重1.2±0.16 g的单环刺蜢幼蜢进行了单一因子急性毒性试验.结果表明,3种重金属离子毒性大小依次为Hg^(2+)>Cu^(2+)>Cd^(2+),幼蜢在3种重金属离子溶液中呈现出不同的生物学效应.Cu^(2+)对幼蜢的24 h、48 h LC_(50)分别为1.768、1.408 mg/L;Hg^(2+)的24h、48 h LC_(50)分别为1.097、0.770 mg/L;Cd^(2+)的24 h、48 h LC_(50)分别为2.084、1.789 mg/L.Cu^(2+)、Hg^(2+)、Cd^(2+)对幼蜢的安全浓度分别为0.141、0.077、0.179 mg/L.
