| 交流示波极谱滴定锌的研究 |
| |
| 引用本文： | 周清海,罗成竹.交流示波极谱滴定锌的研究[J].岩矿测试,1990,9(4):274-276. |
| |
| 作者姓名： | 周清海 罗成竹 |
| |
| 作者单位： | 广东工学院化工系 广州510090
(周清海，罗成竹)，广东工学院化工系 广州510090(单秀娟) |
| |
| 摘 要： | 本文提出了在pH9的0.10mol/L NH_3·H_2O-0.23mol/L NH_4Cl缓冲溶液中,用EDTMP滴定Zn,以Zn在交流示波极谱dE/dt-E曲线上切口消失直接指示终点。所研究的方法已用于测定一些铅锌矿和锌铝合金中的Zn,结果满意。Zn量分析范围为0.900—12.00mg,方法回收率为98.65—101.3％。对于含Zn xx％的试样分析10次相对标准偏差为0.26—1.27％。
|
| 关 键 词： | 交流 示波极谱 锌 滴定 |
Study on Oscillopolarographic Titration of Zinc with EDTMP |
| |
| Zhou Qinghai,Luo Chengzhu and Shan Xiujuan.Study on Oscillopolarographic Titration of Zinc with EDTMP[J].Rock and Mineral Analysis,1990,9(4):274-276. |
| |
| Authors: | Zhou Qinghai Luo Chengzhu and Shan Xiujuan |
| |
| Abstract: | A simple method for oscillopolarographic titration of Zn with ethylenediaminetetramethylphosphonic acid (EDTMP) is described. In a buffer solution of pH 9(0.10mol/L NH3f3H2O-0.23mol/L NH4C1), sharp Zn incision is
given on dE/dt-E curves and zinc (0.900-12.00mg) can be titrated directly
with EDTMP. The interfeience of Cu and Al can be masked by sodium die-thyldithiocarbamate and sodium fluoride respectively. High amounts of Pb and Fe in ore samples can be separated by coprecipitation. The recovery of Zn is 98.65-101.3%. The relative standard deviation for the sample containing xx% of Zn is 0.26-1.27%(n=10). |
| |
| Keywords: | zinc determination oscillopolarographic titration ethylenedia- minetetramethylphosphonic acid (EDTMP) |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《岩矿测试》浏览原始摘要信息 |
| 点击此处可从《岩矿测试》下载免费的PDF全文 |
