| 纸上吸光光度法研究 Ⅲ、三波长β—亚硝基—α—萘酚法测定水中痕量钴 |
| |
| 引用本文： | 陈国儒,陈宗良,左本成.纸上吸光光度法研究 Ⅲ、三波长β—亚硝基—α—萘酚法测定水中痕量钴[J].河北大学学报(自然科学版),1986(2). |
| |
| 作者姓名： | 陈国儒 陈宗良 左本成 |
| |
| 作者单位： | 河北大学化学系
(陈国儒，陈宗良)，河北大学化学系(左本成) |
| |
| 摘 要： | 本文在单波长、双波长纸上吸光光度法研究基础上,进而对三波长纸上吸光光度法做了实验。钴(Ⅲ)用2—亚硝基—1—萘酚沉淀后吸滤于纸上,用721型分光光度计在450、550和700nm三波长处光度。0～5μg的钴服从比耳定律,最低检出浓度为5×10~(-8)g/ml,1μg钴的相对标准偏差为4％。
|
Paper Absorption Spectrophotometric Determination of Cobalt ( Ⅱ ) with 2-Nitroso- 1 -Naphthol |
| |
| Abstract: | The cobalt ( Ⅱ) is precipitated with 2-nitroso- 1 -naphthol, and the complex precipitation is then deposited on a small piece of paper through a filter pipette, followed by the determination of a fleck at 450, 550 and 700 nm with spectrophotometer model 721. It obeys Beer's law in the range of 0-5 μg with Cmin=5× 10-8 g/ml. For Ⅰ μg of Cobalt, the cofficient of variation is 4%. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
|
