快速原子吸收法测定土壤镉铜含量的试验研究

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关键词：土壤；重金属；微波消解技术；石墨炉原子吸收光谱法；镉；铜；测定

中图分类号：0657.31；X833 文献标识码：A 文章编号：1008-9500（2025）12-0008-03DOI： 10.3969/j.issn.1008-9500.2025.12.003

Abstract： Bycombining microwave digestion technology with graphite furnace atomic absorption spectroscopy，optimizing the digestion program and atomization parameters，an eficient synchronous detection method for cadmium and copper in soilis established.TheexperimentalresultsshowthatthedetectionlimitofcadmiumisaslowasO.OO2 mg/kg，thedetection limit of copper is as low as 0.050mg/kg ，the spiked recovery rate remained stable at 96.8%～ 103.5% ，and the single sample detection time is 4O min，significantly improving the detection eficiencyand sensitivity.Actual sampleanalysis reveals the spatialdiferentiationcharacteristicsof heavy metal pollution inindustrialand mining areas，validates the applicabilityof thismethod inpolutionsurveys，emergency monitoring，andother scenarios，and provides reliable techical support for soil heavy metal risk assessment and treatment.

Keywords：soil; heavy metals;microwave digestion technology;graphite furnace atomic absorptionspectroscopy;cadmium： copper; determination

目前，原子吸收光谱法被广泛应用于重金属检测，但传统方法存在前处理烦琐、基体干扰严重、单元素测定效率低等缺陷，难以满足大样本环境监测需求。（剩余3569字）