• 关键词：纺织印染废水  底泥水提液  花  早期发育  毒性

• 基金项目：国家重点基础研究发展计划项目(No.2008CB418000);湖州市科技攻关项目(No.2010GN02)

• 原居林
• 1. 浙江省淡水水产研究所,湖州 313001;
  2. 西北农林科技大学,杨凌 712100

• 顾志敏
• 浙江省淡水水产研究所,湖州 313001

• 叶金云
• 浙江省淡水水产研究所,湖州 313001

• 朱俊杰
• 浙江省淡水水产研究所,湖州 313001

• 胡廷尖
• 浙江省淡水水产研究所,湖州 313001

• 王雨辰
• 浙江省淡水水产研究所,湖州 313001

• 王在照
• 西北农林科技大学,杨凌 712100

• 摘要：在(25±1) ℃水温条件下,以纺织印染废水及其底泥水提液为试验相,采用半静止式生物毒性试验法,分析了纺织印染废水及其底泥对太湖花 早期发育阶段的影响,计算了印染废水和底泥水提液对花 早期发育各阶段的无可观察效应浓度(NOEC)、可观察效应浓度(LOEC)、 可允许毒物浓度(MATC)、半数效应浓度(EC₅₀)、LD₅₀和安全浓度.结果表明,高浓度纺织印染废水和底泥水提液对花 的胚胎发育和仔鱼具有明显的毒性效应,对初孵仔鱼的毒性效应最大,96 h 半数致死剂量(LD₅₀)分别为19.61%和44.83%.胚胎发育前期对纺织印染废水及其底泥水提液的敏感性高于胚胎发育后期.印染废水和底泥水提液对花 早期发育的各个阶段均有一定的致死和致畸毒性作用, 且随着浓度的不断增加,花 受精卵孵化率降低,胚胎发育延缓、畸形及仔鱼运动性差、死亡率增高.

• Abstract：In this study, the toxicity of different concentrations of printing and dyeing wastewater and elutriate of sediment to the early development stages of the Hemibarbus maculates of the Taihu Lake was analyzed with a semi-static toxicity tests under the water temperature of (25±1) ℃. The results showed that high concentration of wastewater and elutriate had obvious toxicity effect on embryo-yolk sac and young H. maculates, and that the lava was the most sensitive in early development stages with the 96 h 50% lethal dose (LD₅₀) of 19.61% and 44.83%, respectively. The embryos at early stages were more sensitive when exposed to wastewater and elutriate than at later development stages. The wastewater and elutriate of sediment had the effect of malformation and death on early embryo development and young H. maculates. Upon the higher concentration of the wastewater and elutriate of sediment, the results showed significant changes on delaying embryo development, decreasing hatching rate and survival rate,malformation, higher death rate and decreased movability of the young. We additionally examined the no observed effect concentration (NOEC), the lowest observed effect concentration (LOEC) and the maximum acceptable toxicant concentration (MATC) of wastewater and elutriate for early developmental stages, respectively. The 50% effect concentration (EC₅₀), the 50% lethal dose (LD₅₀) and the safe concentration of wastewater and elutriate for the early developmental stages were also calculated in this study.

• Key words：printing and dyeing wastewater  elutriate phase of sediment  Hemibarbus maculates   early development  toxicity

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