古冶炼废渣急性毒性危害试验研究

Journal Title: Science Paper Online - Year 2009, Vol 4, Issue 11

Abstract

对古冶炼废渣中重金属进行总量分析,针对古冶炼废渣长久堆放后废渣浸出液的急性毒性进行探讨。结果表明: 废渣中残留重金属(Zn+Pb)平均含量高达6.97%,经几百年风化与雨水淋滤,其中1.71%以上的Zn+Pb已经释放到周围环境中。古冶炼废渣浸出能力减弱,废渣中Zn仅部分点位有极少量浸出,Pb的浸出量甚至在检出限以下,Cr和Cd也仅有少量浸出。根据急性毒性试验结果,样品采用限度试验法进行急性毒性试验。急性毒性试验结果表明废渣水浸液小鼠急性经口LD50(半数致死量)大于20 mL/kg•bw。在实验过程中小白鼠没有出现死亡,行为也未见异常,但小白鼠体重增长明显下降。实验结束时对小鼠作肝、肾脏解剖学检查,未发现肝、肾器官异常改变,与对照组比较无明显差异。说明古冶炼废重金属含量依然很高,虽然经长时间风化淋滤其浸出毒性降低,但是急性毒性危害仍然存在。

Authors and Affiliations

Dongwei Li, Anning He, Zhonghui Xu

Keywords

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  • EP ID EP96922
  • DOI -
  • Views 129
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How To Cite

Dongwei Li, Anning He, Zhonghui Xu (2009). 古冶炼废渣急性毒性危害试验研究. Science Paper Online, 4(11), 771-775. https://europub.co.uk/articles/-A-96922