| 摘要: |
| 在磷酸介质中,硫氰酸根对溴酸钾氧化茜素红的褪色反应具有较强的催化作用,据此建立了催化光度法测定痕量硫氰酸根的新方法。在选定的条件下,方法的检出限为1.1×10-9 g/mL,测定范围为0.045mg/L~0.64mg/L,用于直接测定唾液、湖水中的硫氰酸根,结果满意。 |
| 关键词: 茜素红 硫氰酸根 催化光度法 痕量分析 |
| DOI： |
| 投稿时间：1999-05-10修订日期：1999-07-26 |
| 基金项目: |
|
| Determination of Trace Thiocyanate by Catalytic Spectrophotometric |
|
Tang Ningli, Li Qinghai
|
| (Dept. of Material Eng., Guilin Institute of Tech., 12 Jianganlu, Guilin, Guangxi, 541004, China) |
| Abstract: |
| Based on the catalytic effect of thiocyanate on the oxidation of alizarine red by potassium bromate,a new catalytic spectrophotometric method for the determination of trace thiocyanate was developed.In the selected conditions,Beer,s law was obeyed for thiocyanate in the range of 0.045 mg/L to 0.64 mg/L,and the detection limit is 1.1×10-9 g/mL.The method was applied to determine thiocyanate in lake water and saliva samples with satisfactory results. |
| Key words: alizarine red thiocyanate catalytic spectrophotometry trace analysis |
