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重铬酸钾对方形网纹瑵的毒性研究 被引量:4

TOSICITY OF K_2Cr_2O_7 TO GERIODAPHNIA QUADRANGULA(O.F.MULLER)
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摘要 研究了在25℃条件下重铬酸钾对方形网纹涤Ceriodaphniaquadrangula(O,F.Muler)存活、生殖和生长的影响。急性试验求得铬铬酸钾对该僵的24h和48hBc50值分别为1.0179mg/L和0.4127mg/L;其可信限分别为0.4698一1.7180mg/L和0.1980一0.6988mg/L。慢性试验以存活、生殖和生长为毒性指标,未觉察反应浓度(NOEC)为0.0625mg/L,最低觉察反应浓度(LOEO)为0.1250mg/L,其应用系数在0.15一0.30之间。流水试验(NOEC)为0.03125mg/L,(LOEC)为0.0625mg/L,其应用系数在0.08一0.15之间。结果还表明生长是最敏感的指标。 Effects of K_2Cr_O2_7 on survival,growth,reproduction of Ceriodaphuia qua-drangula(O,F。 Muller) were studied under renewed static conditions.In acutetest the EC50 of K_2Cr_2O_7 to C. quadrangula was estimated to be 1.0179(0.4698一1.7180)mg/L for 24h and 0.4127(0.1980一0.6988)mg/L for 48hunder 25 + ±1℃. In chronic test(7 days)considering three criteria as a whole,the no-observed-effects concentrations(NOECs)were justified as 0。0625mg/Land the lowest-observed-effects concentrations(LOECs)were 0.125mg/L,Theapplication factors were deterlnined within the range of 0.15一0.30. Results oftest showed that toxicity of K_2Cr_2O_7 to C. quadrangula was more toxic in con-stant-flow test than in renewed static test and growth in both tests was re-garded as a more sensitive index for the toxicological assessments.
出处 《环境科学学报》 CAS CSSCI CSCD 北大核心 1994年第3期335-340,共6页 Acta Scientiae Circumstantiae
基金 国家自然科学基金
关键词 重铬酸钾 毒性 方形网纹. K_2Cr_2O_7,toxicity,Ceriodapknia qundrangula.
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  • 1团体著者,1986年
  • 2蒋燮治,中国动物志.节肢动物门.甲壳纲,1979年
  • 3蒋燮治,水生生物学集刊,1965年,5卷,2期,220页
  • 4堵南山,海洋与湖沼,1964年,6卷,2期,193页

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