|
|||||
|
|
| 硫氰酸钾—吐温80光度法测定铁 | |
| 引用本文： | 高明雄,文桂明. 硫氰酸钾—吐温80光度法测定铁[J]. 广西科学院学报, 1989, 5(2): 45-51 |
| 作者姓名： | 高明雄 文桂明 |
| 作者单位： | 广西大学，广西大学 |
| 摘 要： | 一、前言硫氰酸盐光度法测定铁的最大缺点是随着反应的SCN~-浓度的不同而分级络合,随着SCN~-浓度的增大,生成颜色愈来愈深的高配位数络合物Fe(SCN)_4~-、Fe(SCN)_5~2,溶液的颜色由橙黄变为血红色。因此,只有严格控制显色剂的用量,才能得到准确的结果,而且Fe(Ⅲ)易被硫氰酸或分解产物还原,故,重现性差,稳定性也不好,一般10 |
| 关 键 词： | 铁 光度法 硫氰酸盐 测定 |
| 收稿时间： | 1988-07-12 |
SPECTRO PHOTOMETRIC DETERMINATION OF IRON BY POTASSIUM SUL FOCYAN ATE WITH TWEEN-80 |
|
| Gao MingXiong and Wen GuiMing. SPECTRO PHOTOMETRIC DETERMINATION OF IRON BY POTASSIUM SUL FOCYAN ATE WITH TWEEN-80[J]. Journal of Guangxi Academy of Sciences, 1989, 5(2): 45-51 | |
| Authors: | Gao MingXiong and Wen GuiMing |
| Affiliation: | Department of Chemistry, Guangxi University, Nanning and Department of Chemistry, Guangxi University, Nanning |
| Abstract: | A method of spectrophotometric determination of iron with potassium sulfocyanate in the presence of non-ionic surfactants Tween-80 was invertigated. In a pH range from 1.0 to 4.0 iron can form a stable complex with potassium sulfocyanate in the presence of Tween 80 exhibiting maxinaum absorption at 480nm.Beer''s law is obeyed up to concentration of 30mg/25m/of iron. |
| Keywords: | |
| 本文献已被 CNKI 维普 等数据库收录！ | |
| 点击此处可从《广西科学院学报》浏览原始摘要信息 | |
| 点击此处可从《广西科学院学报》下载全文 | |