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[目的]探索一种简单快捷的利用原子吸收光谱法测定土壤中的铬和锌的方法。[方法]利用微波消解样品,建立了原子吸收光谱法测定土壤中的铬和锌的方法。[结果]铬在0~0.8 mg/L浓度范围内和锌0~0.8 mg/L浓度范围内的校正曲线呈线性,检出限分别为0.002 5 mg/L和0.002 3 mg/L。3个土壤样品铬和锌的加标回收率分别为102.4%~103.2%、97.7%~98.3%。[结论]该方法操作简单、灵敏度高、高效,适合土壤样品中铬和锌的测定。
[Objective] The research aimed to explore a simple and rapid method for the determination of chromium and zinc in soil by atomic absorption spectrometry. [Method] The method of microwave digestion of samples was established to determine chromium and zinc in soil by atomic absorption spectrometry. [Result] The calibration curve of chromium in the range of 0 ~ 0.8 mg / L and 0 ~ 0.8 mg / L of zinc was linear with the detection limits of 0.002 5 mg / L and 0.002 3 mg / L, respectively. The spiked recoveries of chromium and zinc in three soil samples ranged from 102.4% to 103.2% and from 97.7% to 98.3%, respectively. [Conclusion] The method was simple in operation, highly sensitive and efficient, and suitable for the determination of chromium and zinc in soil samples.