| 1, 2-萘醌-4-磺酸钠分光光度法测定间苯二酚 |
| |
| 引用本文： | 王世雷,李晶,张欢欢,李全民.1, 2-萘醌-4-磺酸钠分光光度法测定间苯二酚[J].分析试验室,2009,28(8). |
| |
| 作者姓名： | 王世雷 李晶 张欢欢 李全民 |
| |
| 作者单位： | 1. 河南师范大学化学与环境科学学院,河南省环境污染控制重点实验室,新乡,453007;焦作师专化学系,焦作,454000
2. 河南师范大学化学与环境科学学院,河南省环境污染控制重点实验室,新乡,453007 |
| |
| 基金项目： | 河南省教育厅自然科学基金 |
| |
| 摘 要： | 在pH 13.00缓冲溶液中, 间苯二酚能够催化氢氧根离子与1,2-萘醌-4-磺酸钠反应生成2-羟基-1, 4-萘醌, 其最大吸收波长为454 nm. 间苯二酚质量浓度在0.39～13.21 mg/L范围内与吸光度呈现良好线性关系. 线性回归方程为A=0.01918+0.05703c (×105 mol/L), 相关系数r=0.9981. RSD和检测限分别为1.6%, 0.34 mg/L (3σ/k). 该法能够直接用于水样中间苯二酚含量测定, 回收率在94.3%～106%.
|
| 关 键 词： | 间苯二酚 1 2-萘醌-4-磺酸钠 分光光度法 |
Spectrophotometric determination of resorcinol by using sodium 1,2-naphthoquinone-4-sulfonate as chromogenic reagent |
| |
| WANG Shi-lei,LI Jing,ZHANG Huan-huan,LI Quan-min.Spectrophotometric determination of resorcinol by using sodium 1,2-naphthoquinone-4-sulfonate as chromogenic reagent[J].Chinese Journal of Analysis Laboratory,2009,28(8). |
| |
| Authors: | WANG Shi-lei LI Jing ZHANG Huan-huan LI Quan-min |
| |
| Institution: | 1.College of Chemistry and Environmental Science;Henan Normal University;Henan Key Laboratory for Environmental Pollution Control;Xinxiang 453007;2.Department of Chemistry;Jiaozuo Teachers College;Jiaozuo 454000 |
| |
| Abstract: | A novel method for the determination of resorcinol with 1,2-naphthoquinone-4-sulfonate (NQS) by spectrophotometry was proposed in this paper. The study indicated that 2-hydroxy-1, 4-naphthoquinone (lawsone) was formed by hydroxyl ion and NQS in a buffer solution of pH 13.00 using resorcinol as a catalyzer, and ε was 5.7×103 L/mol.cm at 454 nm. Absorbency is linear with the concentration of resorcinol in the range of 0.39～13.21 mg/L. The linear equation is A=0.01918+0.05703c (×105 mol/L), with a linear correlation coefficient of 0.9981. The recoveries are 94.3%～106%. The detection limit is 0.34 mg/L (3σ/k) and RSD is 1.6%. The method has been sucessfully used for the determination of resorcinol in water. |
| |
| Keywords: | Resorcinol Sodium 1 2-naphthoquine-4-sulfonate Spectrophotometry |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
