| 镉柱还原光度法测定海水中的硝酸盐氮 |
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| 引用本文： | 魏福祥,傅晓文,马晓珍. 镉柱还原光度法测定海水中的硝酸盐氮[J]. 分析试验室, 2011, 30(7): 10-13 |
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| 作者姓名： | 魏福祥 傅晓文 马晓珍 |
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| 作者单位： | 河北科技大学环境科学与工程学院,石家庄,050018 |
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| 基金项目： | 国家863课题(2007AA09210109)资助 |
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| 摘 要： | 将纯镉柱还原法与流动注射技术和分光光度法相结合，建立了一种快速测定海水样品中硝酸盐氮含量的方法。用粒径为2～5 mm的镉粒填装有效柱长为10 cm的镉柱，在停留时间为480s，温度为20～35℃，pH2.5～3.0条件下，还原效率可稳定在95％以上，且测定结果不受海水中主要共存离子的影响。方法对硝酸盐氮的测定范围为0～...
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| 关 键 词： | 硝酸盐氮 海水 镉柱 分光光度法 |
Detection of nitrate nitrogen in seawater with cadmium column and spectrophotometry |
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| WEI Fu-xiang,FU Xiao-wen,MA Xiao-zhen. Detection of nitrate nitrogen in seawater with cadmium column and spectrophotometry[J]. Chinese Journal of Analysis Laboratory, 2011, 30(7): 10-13 |
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| Authors: | WEI Fu-xiang FU Xiao-wen MA Xiao-zhen |
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| Affiliation: | WEI Fu-xiang*,FU Xiao-wen and MA Xiao-zhen (Hebei University of Science and Technology,Institute of Environmental Science and Technology,Shijiazhuang 050018) |
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| Abstract: | Nitrate nitrogen is one of the main pollutions which lead to eutrophication in seawater.So it's quite important to monitor the concentration of the nitrate nitrogen in seawater quickly and effectively.Using a column filled with pure cadmium,cooperating with FIA and spectrophotometry,a method to determine the nitrate nitrogen in seawater was established.As result,when the diameters of cadmium particles are 2~5 mm,the length of the cadmium column is 10 cm,the residence time is 480 s,the reduction temperature ... |
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| Keywords: | Nitrate nitrogen Seawater Cadmium column Spectrophotometry |
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