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| 水中汞监测存在的问题与解决办法 |
| Issues On Monitoring of Hgin Water and Solution Methods |
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| DOI： |
| 中文关键词: 地表水 废水 汞 测定 |
| 英文关键词: Surface water Wastew ater Hg Determination |
| 基金项目: |
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| 摘要点击次数: 1572 |
| 全文下载次数: 2035 |
| 中文摘要: |
| 利用中日合作(JICA)项目资金, 对测定地表水中汞存在的主要问题, 如水样的保存和处理, 水样的消解, 测汞的冷原子吸收法和原子荧光法等进行了研究。通过对33个环境监测站的样品考核, 发现测定结果与标准值相比, 偏高的数据达75% 以上。 提出了用1%H 2 SO 4 和0.1% K 2 Cr 2 O 7 保存水样最好; 高锰酸钾-过硫酸钾消解法适用于消解含有机物、悬浮物和组成复杂的废水样, 高锰酸钾-硫酸消解法适用于消解被有机物轻度污染的废水, 溴酸钾-溴化钾消解法适用于消解地表水和含较少有机物的生活 |
| 英文摘要: |
| Issuesonthe determination of Hginsurface w ater w as discussed, such asthe maintenance andtreatmentof water samples, digestion of watersamples, cold-vapouratomic absorption method and atomicfluorimetricanalysisof Hg etc. Intheexaminationofsamplesin 33environmentalmonitoringstations,75% ofdeterminationresults werehigherthanthestandard data.It suggestedthatit w as bestto maintain watersample with 1% H 2 SO 4 and 0 1 1% K 2 Cr 2 O 7 , potassium permanganate-potassium persulfate method wassuitablefordigestion ofw astewatersamplesoforganic materials, suspended materialsand materialwith complex component, potassium permanganate-sulfate method wassuitablefordigestionoflow-polluted w astewatersamples, potassium bromate-potassium bromide method wassuitableforsurface w ater, domestic w astew ater withlessorganic materialsandindustrial w astewater. Researchindicatedthatsulfatepotassium permanganae-potassium persulfate method w asespecially suitablefor digestion ofsurface waterand w astew ater. Fortheinfluencingfactorsofdetermination usingcold-vapouratomic absorption method and atomicfluorimetricanalysis method, solution methods w assuggested. |
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