摘要
采用离子色谱法测定水中溴离子与碘离子,选择AS19阴离子交换分离柱、KOH淋洗液自动发生器、抑制型电导检测。溴离子与碘离子分别在14.8μg/L～100 mg/L与30.4μg/L～100 mg/L范围内线性良好,检出限分别为3.7μg/L与7.6μg/L,环境水样平行测定的RSD分别为0.2%～1.5%与0.3%～1.6%,两个质量浓度水平的加标回收率分别为91.8%～105%与89.5%～93.4%。
An ion chromatography method for determining Br- and I - in water was studied. The separation of the anions was achieved on an IonPae AS19 Column with KOH as eluent,and the detection was performed by a conductivity detection mode. Good linearity were obtained within the concentration range of 14.8 Ixg/L ~ 100 mg/L for Br- and 30.4 Ixg/L ~ 100 mg/L for I -. The method detection limits of Br- and I - were 3.7 p,g/L and 7.6 ixg/L,respeetively. The RSD of the samples were 0.2% - 1.5% （ Br- ） and 0.3% ~ 1.6% （ I - ）. The recoveries of Br- in water samples were 91.8% ~ 105% ,and the recoveries of I- were 89.5% -93.4%.
出处
《环境监测管理与技术》
2012年第6期50-52,共3页
The Administration and Technique of Environmental Monitoring
基金
国家水体污染控制与治理科技重大专项基金"水环境质量监测技术方法研究课题"资助项目(2009ZX07527-001)
关键词
溴离子
碘离子
离子色谱法
水质
Bromide
Iodide
Ion chromatography
Water quality
