| 一种Cr(Ⅵ)的新显色反应及其在环境水样分析中的应用 |
| 摘要点击 1627 全文点击 1542 投稿时间：1997-06-20 |
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| 中文关键词 二安替比林对乙氧基苯基甲烷 Cr(Ⅵ) 显色反应 |
| 英文关键词 diantipyryl-(p-ethoxy)-phenylmethane colour reaction chromium(Ⅵ) |
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| 中文摘要 |
| 合成了超高灵敏显色剂二安替比林对乙氧基苯基甲烷(DApEM),在磷酸介质中,Mn(Ⅱ)存在下,DApEM与Cr(Ⅵ)生成黄色产物,λmax=450nm,ε=1.36×106L·(mol·cm)-1.铬(Ⅵ)含量在2-32μg/L内符合比尔定律,用于环境水样中Cr(Ⅵ)的测定,结果满意。 |
| 英文摘要 |
| Diantipyryl-(p-ethoxy)-phenylmethane(DApEM) has been synthesized and identified.A study on superhighly sensitive colour reaction of Cr(Ⅵ)with DApEM has been carried out.In the presence of Mn(Ⅱ),Cr(Ⅵ) can react with DApEM to form a yellow product in phosphoric acid medium.Maximum absorbance is at 450 nm with molar absorptivity of 1.36×106L·(mol·cm)-1.Beer's law is obeyed in the range of 2—32 μg Cr(Ⅵ)/L.This method has been satisfactorily applied to determination of chromium (Ⅵ) in environmental water. |
