| 高校实验室废液中Cr(VI)的测定及处理方法 |
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| 引用本文： | 杨志洁,彭丽,黄进,孙雪凤,何林.高校实验室废液中Cr(VI)的测定及处理方法[J].大理学院学报,2011,10(4):41-42. |
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| 作者姓名： | 杨志洁 彭丽 黄进 孙雪凤 何林 |
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| 作者单位： | 1. 大理学院药学与化学学院,云南大理,671000
2. 大理学院农学与生物科学学院,云南大理,671003 |
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| 摘 要： | Cr(VI)是对环境有害的主要重金属之一,实验室含Cr(VI)废液不能直接排放,必须进行回收处理。采用间接碘量法测定含Cr(VI)废液的浓度;化学还原法处理含Cr(VI)废液,研究以硫酸亚铁为还原剂还原Cr(VI)废液的酸度条件、还原剂用量、反应时间等影响因素。结果表明:在最佳条件下,以硫酸亚铁为还原剂处理,废液达到了国家排放标准,取得了良好的处理效果。
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| 关 键 词： | 硫酸亚铁 (VI) 还原 实验室含Cr(VI)废液 |
Determination and Treatment Methods of Cr(VI)in College Laboratory Waste Water |
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| YANG Zhijie,PENG Li,HUANG Jin,SUN Xuefeng,HE Lin.Determination and Treatment Methods of Cr(VI)in College Laboratory Waste Water[J].Journal of Dali University,2011,10(4):41-42. |
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| Authors: | YANG Zhijie PENG Li HUANG Jin SUN Xuefeng HE Lin |
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| Institution: | 1.College of Pharmacy and Chemistry,Dali University,Dali,Yunnan 671000,China;2.College of Agriculture and Biology Sciences,Dali University,Dali,Yunnan 671003,China) |
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| Abstract: | Chromium Cr(VI) is a kind of heavy metal which is harmful for the enviroment,therefore,the waste liquid containing Cr(VI) in the laboratory should be treated for recycling instead of being discharged directly.In this paper,we applied the indirect iodometric method to determine the concentration of Cr(VI) with chemical reduction using ferrous sulfate heptahydrate,and investigate the effect of acidity condition,reductant quantity and reaction time of this reducing agent.The results showed that the concentration of Cr(VI) after treatment with ferrous sulfate heptahydrate in a certain condition meet the discharge standard.Ferrous sulfate can be used as reducing agent in recycling of waste liquid contained Cr(VI) in the laboratory. |
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| Keywords: | ferrous sulfate Cr(VI) reduction laboratory Cr(VI) waste water |
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