HR-ICP-MS法测定淮北煤田太灰水中溴和碘

Determining Br and I of Limestone Water of Taiyuan Group in Huaibei Coal Field by HR-ICP-MS

Br、I是研究地下卤水来源、运移及演化机制的良好指示剂,煤田深部太灰水通常为淡水-微咸水,部分样品为咸水,因此其Br、I含量具有示踪煤田深部太灰水演化的潜力;为准确测定煤田深部太灰水中Br、I含量,采用高分辨率电感耦合等离子体质谱仪进行分析。经分析选择^(79)Br、^(127)I为待测元素,^(103)Rh为内标元素,淮北煤田某矿太灰水测试结果为Br浓度范围为219-1233μg/L,平均值为503μg/L;I浓度范围为41.7-157μg/L,平均值为84.6μg/L,Br、I高于海水,具有示踪太灰水演化的潜力。

Br and I are good indicators for studying the source,migration and evolution mechanism of underground brine.The Limestone Water of Taiyuan Group in the coal field is usually freshwaterbrackish water,and some samples are salt water.Therefore,its Br and I content have the potential for tracing the evolution of Limestone Water of Taiyuan Group in the coal field.In order to accurately determine the Br and I content in the deep coal field,a high-resolution inductance-coupled plasma mass spectrometer was used.After analysis,79Br and 127I were selected as elements to be tested and 103Rh as internal standard element.The test results of Limestone Water of Taiyuan Group in a mine in Huaibei coal field were found in the Br concentration range of 219-1233μg/L,and the average value was 503μg/L.The I concentration range was 41.7-157μg/L with a average value of 84.6μg/L.Br and I are higher than seawater,and have the potential to trace the evolution of Limestone Water of Taiyuan Group.