|
|||||
|
|
| 催化光度法测定痕量铅 | |
| 引用本文： | 王文元,者为,段焰青,夏建军,刘亚,夏向伟,廖予琦,吴暇. 催化光度法测定痕量铅[J]. 湖北农业科学, 2012, 51(7): 1447-1449 |
| 作者姓名： | 王文元 者为 段焰青 夏建军 刘亚 夏向伟 廖予琦 吴暇 |
| 作者单位： | 1. 红云红河烟草(集团)有限责任公司技术中心生化分析室,昆明,650202 2. 红云红河烟草(集团)有限责任公司技术中心生化分析室,昆明650202;湖南大学化学化工学院,长沙410082 3. 红云红河烟草(集团)有限责任公司技术中心生化分析室,昆明650202;云南大学化学科学与工程学院,昆明650091 4. 昆明理工大学化工学院,昆明,650224 |
| 基金项目： | 昆明理工大学研究生课外学术科技创新基金资助项目，昆明理工大学分析测试基金项目，红云红河集团自立项目 |
| 摘 要： | 在活化剂Tween-20的存在下和六次甲基四胺-盐酸缓冲溶液(pH 5.0),痕量Pb(Ⅱ)催化高碘酸钾氧化愈创木酚这一新的指示反应及其动力学参数,建立了催化动力学光度法测定痕量Pb(Ⅱ)的新方法.该方法的线性范围为0～0.9 μg/mL,检出限为9.9× 10-3 μg/mL,相对标准偏差(RSDs)为1.3％～3.9％,标准加入法的回收率为91.8％～108.2％,该方法具有快速、灵敏、简便等优点,应用于实际烟草样品中痕量铅的测定,结果与ICP-MS法相吻合,为检测烟草中痕量铅提供了新的技术手段. |
| 关 键 词： | 愈创木酚 催化光度法 痕量 铅 烟草 |
Determination of Trace Lead by Catalytic Spectrophotometry |
|
| WANG Wen-yuan , ZHE Wei , DUAN Yan-qing , XIA Jian-jun , LIU Ya , XIA Xiang-wei , LIAO Yu-qi , WU Xia. Determination of Trace Lead by Catalytic Spectrophotometry[J]. Hubei Agricultural Sciences, 2012, 51(7): 1447-1449 | |
| Authors: | WANG Wen-yuan ZHE Wei DUAN Yan-qing XIA Jian-jun LIU Ya XIA Xiang-wei LIAO Yu-qi WU Xia |
| Affiliation: | 1.Technology Center Physiological and Biochemical Laboratory of Hongyun-Honghe Tobacco Group,Kunming 650202,China; 2.College of Chemistry and Chenmical Engineering,Hunan University,Changsha 410082,China;3.School of Chemical Science and Technology,Yunan University,Kunming 650091,China;4.Faculty of Chemical Engineering,Kunming University of Science and Technology,Kunming 650224,China) |
| Abstract: | A new catalytic kinetic spectrophotometric method for the determination of trace lead(II) was established based on the fact that Pb(II) could catalyze the indicating oxidation reaction of guaiacol by hexamethylenetetramine and hydrochloric acid medium at pH 5.0 and the kinetic conditions was investigated,when Tween-20 was used as the activator.The linear range of the determination was 0～0.9 μg/mL and detection limit was 9.9×10-3 μg/mL.The method had been applied to determine trace Pb(II) in tobacco with the RSDs of 1.3%～3.9% and recoveries of 91.8%～108.2% and the results coincided with the ICP-MS,could be used as a new method to detect Pb(II) in tobacco,which is fast,sensitive and simple. |
| Keywords: | guaiacol catalytic spectrophotometry trace lead tobacco |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |