| 第 33 卷第 2 期 |  | Vol. 33 No. 2 | | 2003 年 4 月 | Apr 2003 |
|
所属栏目：分析与测试
间接分光光度法测定试剂盐酸中的微量氟 |
| 尹跃群; 李支援(湖南省化学试剂产品质量监测站; 长沙环境保护职业技术学院; 湖南株洲; 412008; 湖南长沙; 410004) |
| 摘 要：研究了在一定的酸性条件下 ,氟与锆生成稳定的无色络合物 ,使相对性较差的锆—二甲酚橙络合物的红色褪去 ,从而间接测定了试剂盐酸中的微量氟 ,该溶液的最大吸收波长为 535nm ,50ml体系里含氟量在 0～ 25μg范围内测定结果呈现很好的线性关系。氟回收率在 98.8%～100.5 %,相对标准偏差为 3.5 %。 |
| 关键词：间接分光光度法; 试剂盐酸; 微量氟 |
| 中图分类号：O657.32 文献标识码：A 文章编号：1009-9212(2003)02-0060-02 |
|
| Determination of Trace Fuluorine in Reagent Hydrochloric Acid by Indirect Spectrophotometry |
| YIN Yue-qun 1; LI Zhi-yuan 2.（1.Hunan Chemical Reagent Production Quality Control Centre; ZhuZhou Hunan; 412008; China; 2.Changsha Environmental ProteitionVacational College; Changsha Hunan; 410004; China） |
| Abstract：An indirect spectrophotometry was introduced to determine trace amounts of fluorine in chemical reagent hydrochloric acid.In a certain acid solution,fluoride ion reacted with zirconium ion into a stable colorless complex compound,which made less stable Zr-xylenol orange red comples compound fade.So we can indirectly determine trace amounts of fluorine in reagent hydrochloric acid.The sample solution has a maximum absorption band at 535nm. The results of determination show a very good liner relationship betw... |
| Key words：indirect spectrophotometry; reagent hydrochloric Acid; trace amounts of fluorine |
|
收稿日期：2002-10-21
|
| 阅读全文 |
|