电感耦合等离子体质谱法测定水体中溴和碘量  

ICP-MS Determination of Bromine and Iodine in Waters

作　　者：王旭日[1] 贾振亚[1] 陈盛[1] 陈楠[1] 王小菊[1] 何书海[1] 

机构地区：[1]海南省环境科学研究院,海口571126

出　　处：《理化检验（化学分册）》2015年第8期1187-1190,共4页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：采用电感耦合等离子体质谱法测定水体中溴和碘的含量。水样无需前处理与内标溶液稀释后直接测定，用氨水（1＋99）溶液作介质和清洗液。以铟为内标物。溴和碘的质量浓度在100μg·L-1以内与其响应强度呈线性关系，溴的检出限为0．19μg·L-1，碘的检出限为0．083μ·L-1。对5μg·L-1溴和碘的混合标准溶液连续测定18次，测定值的相对标准偏差为2．3％（溴），1．9％（碘）。方法用于水样的分析，加标回收率在88．0％～110％之间。ICP-MS was applied to the determination of bromine and iodine in waters. The water sample was diluted with internal standard solution and determined directly without any pretreatment. Aqueous ammonia solution （1＋99） was used both as the medium and washing solution in the determination. Indium ion was used as internal standard. Linear relationships between values of intensity of response signal and mass concentration of bromine and iodine were kept in the same range within 100 μg · L-1 with detection limits of 0. 19 μg · L-1 for bromine and 0. 083μg · L-1 for iodine. Precision of the method was tested at the concentration level of 5 μg · L-1 mixed standard solution for 18 determination, values of RSD＇s found were 2. 3% and 1. 9% for bromine and iodine respectively. The proposed method was applied to the analysis of water samples, giving values of recovery in the range of 88. 0%-110%.

关 键 词：电感耦合等离子体质谱法 溴 碘 水体 

分 类 号：O657.63[理学—分析化学]