| 紫外导数分光光度法直接测定饮用水中的硝酸根含量 |
| 摘要点击 879 全文点击 1742 投稿时间：1998-01-14 |
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| 中文关键词 紫外导数分光光度法 硝酸根 饮用水 直接测定 |
| 英文关键词 Ultraviolet second derivative spectrophotometry nitrate content drinking water direct determination |
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| 中文摘要 |
| 在酸性条件下,用二阶导数及零交技术,取223.5nm处的导数值可消除水中常见离子的干扰。该法的线性范围为0-130μg/50ml,检出限为0.08μg·ml-1,加标回收率在95%-101%之间,适用于自来水、井水及泉水等饮用水中NO3-含量的测定。 |
| 英文摘要 |
| In the presence of sulphuric acid,interferences such as NO2-,HCO3-,CO32- etc. can be eliminated by the Zero cross technique.Beer's law is obeyed in the range of 0—130μg/50ml,and the limit of detection is 0.08μg·ml-1.The recovery is range of 95%—101%.The method was applied to the determination of nitrate content in the drinking water with satisfactory results. |
