摘要
在pH2.00~3.42的B—R缓冲溶液中,罗丹明6G与十二烷基苯磺酸钠(SD—BS)、十二烷基硫酸钠(SDS)阴离子表面活性剂反应形成离子缔合物,导致共振瑞利散射(RRS)增强,并产生新的RRS光谱,最大RRS峰位于375nm,方法对SDBS、SDS的检出限分别为6ng/mL、5ng/mL,其线性范围分别为0.02~5.6μg/mL、0.02~14.0μg/mL。研究了适宜的反应条件,方法具有较高的灵敏度,用于合成水样和环境水样中阴离子表面活性剂含量的测定,结果满意。
In pH 2. 00-3. 42 Britton-Robinson(B-R) buffer medium, Rhodamine 6G can react with sodium dodecylbenzene(SDBS) and sodium dodecyl sulfate(SDS) to form ion-association complexes. As a result, an enhanced resonance rayleigh scattering(RRS) spectra was observed, and the maximum RRS wavelengths of ion-association complexes were located at 375 nm. The detection limits of SDBS and SDS were 6 ng/mL and 5 ng/mL, and the linear ranges were 0. 02 - 5. 6 and 0. 02 - 14. 0 μg/mL, respectively. The method has been applied to the determination of SDBS and SDS in simulated and environmental samples with satisfactory results.
出处
《分析科学学报》
CAS
CSCD
北大核心
2009年第3期272-276,共5页
Journal of Analytical Science
作者简介
通讯联系人:吕昌银,男,教授,主要从事环境中有毒有害物质的检测方法研究.