石墨炉原子吸收光谱法测定无锡地下水中的铅·镉·铜·铍

目的]探究无锡市地下水中铅、镉、铜和铍的浓度。方法]用石墨炉原子吸收光谱法测定4个水质标准物质铅:GSB 07-1183-2000(201226);镉:GSB 07-1185-2000(201424);铜:GSB 07-1182-2000(201123);铍:GSB 07-1178-2000(204605)]和12个地下水样品(样品1~12)的铅、镉、铜和铍浓度。结果]标准样品的测定结果表明,该仪器的精密度和准确度均符合要求,可以用来测定地下水中的铅、镉、铜和铍浓度。抽取的12个样品的测定结果表明,无锡市地下水中铅、镉、铜和铍的浓度均符合要求,未受到污染。结论]该方法的检出限、精密度、准确度和样品的回收率均能满足地下水的检测要求。

Determination of Lead,Cadmium, Copper and Beryllium in Wuxi Groundwater by Graphite Furnace Atomic Absorption Spectrometry

Objective] The content of lead,cadmium,copper and beryllium in Wuxi groundwater was explored.Method] The precision, accuracy and recovery of four standard substances lead:GSB 07-1183-2000(201226);cadmium:GSB 07-1185-2000(201424);copper:GSB 07-1182-2000(201123)];beryllium:GSB 07-1178-2000(204605)];and twelve samples(sample 1-12) were determined by graphite furnace atomic absorption spectrometry.Result] The measurement results of four standard samples showed that the accuracy and precision of the instrument meet the requirements.It can be used for determining the content of lead, cadmium, copper and beryllium in groundwater.The measurement results of the twelve samples showed that the contents of lead, cadmium, copper and beryllium were agreed well with the requirements.It was indicated that the groundwater of Wuxi was not polluted by lead, cadmium, copper and beryllium.Conclusion] The detection results of all samples were agreed well with the standard value of the groundwater.