摘要
离子色谱法分析痕量卤离子,一般用电导或安培检测器检测。在阴离子色谱分离中,因氯离子在溴离子前被冼脱,当用电导检测含较高浓度氯离子样品中痕量溴、碘离子时,很宽的氯峰会干扰后面溴峰的定量效果。消除氯离子干扰常用的方法是稀释,但稀释后样品中低含量组分往往就无法测出。本文用日本岛津UV-365型紫外分光光度计,研究了氯、溴、碘三种离子的紫外吸收特性。利用氯离子在紫外区仅有极弱的吸收,而溴。
Direct monitoring bromide and iodide in high-concentration chloride by IC has been realized-based on the fact that chloride can not be detected at the wavelength ranged 200 to 220nm.The calibration curves for bromide and iodide were linear over (he range of 0-6.25×10-5mol/L and 0-395×10-5mol/L respectively.The recoveries of 101.1%-102.7% for bromide and 98.35%-101.1% for iodide were obtained.
出处
《色谱》
CAS
CSCD
北大核心
1990年第5期333-335,共3页
Chinese Journal of Chromatography
