| 偶氮胂-DCS作为钙镁络合滴定指示剂的研究及其应用 |
| |
| 引用本文： | 张海丽,徐斌,邹欣平.偶氮胂-DCS作为钙镁络合滴定指示剂的研究及其应用[J].理化检验(化学分册),2000,36(7):296-298. |
| |
| 作者姓名： | 张海丽 徐斌 邹欣平 |
| |
| 作者单位： | 湖北师范学院化学系,黄石435002 |
| |
| 摘 要： | 研究了利用光度显色剂偶氮胂－ＤＣＳ作为钙镁联合滴定指示剂的可能性及使用该指示剂滴定钙镁的准确性，与常用的钙镁络合滴定指示剂进行了比较，并成功地应用于水泥试样中钙镁含量测定。结果表明，偶氮胂－ＤＣＳ是一种良好的钙镁络合滴指示剂。
|
| 关 键 词： | 铬合滴定 指示剂 钙 镁 偶氮胂－DCS 水泥 测定 |
| 修稿时间： | 1999-07-27 |
USE OF THE CHROMOGENIC REAGENT ANZ-DCS AS METALLOCHROMIC INDICATOR IN THE EDTA TITRATION OF CALCIUM AND MAGNESIUM |
| |
| Zhang Haili,Xu Bin,Zuo Xinping.USE OF THE CHROMOGENIC REAGENT ANZ-DCS AS METALLOCHROMIC INDICATOR IN THE EDTA TITRATION OF CALCIUM AND MAGNESIUM[J].Physical Testing and Chemical Analysis Part B:Chemical Analgsis,2000,36(7):296-298. |
| |
| Authors: | Zhang Haili Xu Bin Zuo Xinping |
| |
| Institution: | Zhang Haili
,Xu Bin
,Zuo Xinping
;(Hubei Normal University Huangshi 435002) |
| |
| Abstract: | It is reported in this paper that the chromogenic reagent, arsenazo DCS (ANZ DCS) can be used as metallochromic indicator in the EDTA titration of calcium and magnesium. It is proved that ANZ DCS gives a sharper endpoint indication than EBT, calcon and K B in an ammoniacal buffer solution of pH 10. In the presence of acetylacetone, calcium can be determined in the presence of magnesium. This indicator has been used in the EDTA titration of CaO and MgO in cement with good accuracy and selectivity. |
| |
| Keywords: | Arsenazo-DCS EDTA titration Metallochromic iudicator Calcium Magnesium |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
