| 共振光散射技术测定微量碘 |
| |
| 引用本文： | 刘雪莲,潘瑾.共振光散射技术测定微量碘[J].重庆教育学院学报,2008,21(3):17-19. |
| |
| 作者姓名： | 刘雪莲 潘瑾 |
| |
| 作者单位： | 重庆交通大学河海学院,重庆,400074 |
| |
| 摘 要： | 在十二烷基苯磺酸钠（SDBS）胶束体系中，通过检测AgNO3沉淀I-生成稳定的AgI胶体所产生的共振光散射（RLS）增强信号，从而建立了I-的灵敏分析法。RLS光谱在437nm处，具有特征散射峰，且增强的共振光散射强度（△IRLS）与I-溶液的浓度在一定范围内呈线性关系，其检出限为2．6ng／mL。本实验中研究了AgNO3溶液浓度、SDBS溶液浓度以及共存物质对RLS强度的影响。此方法用于合成样的测定。其回收率在99．3％～106．7％之间，RSD小于2．8%。
|
| 关 键 词： | 共振光散射 碘离子 十二烷基苯磺酸钠 |
| 文章编号： | 1008-6390(2008)03-0017-03 |
| 修稿时间： | 2007年11月12 |
Determination of trace amount iodine by resonance light scattering technique |
| |
| LIU Xue-lian,PAN Jin.Determination of trace amount iodine by resonance light scattering technique[J].Journal of Chongqing College of Education,2008,21(3):17-19. |
| |
| Authors: | LIU Xue-lian PAN Jin |
| |
| Institution: | (School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, China) |
| |
| Abstract: | In the sodium dodecyl benzene sulfonate （SDBS） micellar system, a sensitive method for the determination of I-was established based on detecting the enhanced resonance light scattering （RLS） signals produced by steady AgI colloid resulting from the interaction of AgN03 with I^-. RLS spectrum is characterized by a scattering peak at 437 nm. The enhanced RLS intensities（Aims） were in linear proportion to the concentrations of I- in a certain range and the determination limit for I- is 2.6 ng/mL. The effects of the concentration of AgNO3, the concentration of SDBS and foreign substances on the determination of I-were investigated. The method was used for the determination of trace amount iodine in synthetic samples, with the recovery being 99.3%-106.7% and a RSD less than 2.8%. |
| |
| Keywords: | resonance light scattering iodine ion sodium dodecyl benzene sulfonate |
| 本文献已被 维普 万方数据 等数据库收录！ |
