| 对乙酰基偶氮羧光度法测定痕量铬的研究 |
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| 引用本文： | 李冠峰,郁兆莲.对乙酰基偶氮羧光度法测定痕量铬的研究[J].洛阳师范学院学报,2003,22(5):47-48. |
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| 作者姓名： | 李冠峰 郁兆莲 |
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| 作者单位： | 洛阳师范学院化学系,河南洛阳,471022 |
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| 摘 要： | 研究了对乙酰基偶氮羧与Cr_2O_7~(2-)的褪色反应,建立了一种新的测定痕量Cr(Ⅵ)的光度方法,发现其在高氯酸介质中具有高灵敏的褪色反应,摩尔吸光系数达到3.0×10~6 L·mol~(-1)·cm~(-1)Cr(Ⅵ),量在0～50μg范围内符合比耳定律.
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| 关 键 词： | 光度法 褪色反应 对乙酰基偶氮羧 铬(Ⅳ) |
| 文章编号： | 1009-4970(2003)05-0047-02 |
| 修稿时间： | 2003年4月12日 |
Determination of Trace Chromium (VI) by Highly Sensitive Spectrophotometric Method with Periodate-p-Acetylcarboxylazo |
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| LI Guan-feng,YU Zhao-lian.Determination of Trace Chromium (VI) by Highly Sensitive Spectrophotometric Method with Periodate-p-Acetylcarboxylazo[J].Journal of Luoyang Teachers College,2003,22(5):47-48. |
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| Authors: | LI Guan-feng YU Zhao-lian |
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| Abstract: | The fading reaction of Periodate-p-Acetylcarboxylazo with Cr2O72- was studied and a new spectropho-tometric method for determining trace Cr (VI) was developed.In the medium of perchloric acid the reaction is of high sensitivity. The molar absorptivity is 3.0×106 L.mor-1.cm-1. Beer's law is obeyed for Cr ( VI ) in the range of 0~50μg. |
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| Keywords: | spectrophotometry fading reaction Periodate-p-Acetylcarboxylazo Chromium (VI) |
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