将非完全消化法与悬浮液进样技术相组合处理蘑菇样品 ,即先用浓HNO3低温消解样品至溶液呈透明 ,再用琼脂溶液悬浮极少量不溶物 ,制成样品溶液。分别以Sr2 +溶液和NaCl溶液作为测定镁、钾的释放剂和消电离剂。以原子吸收光谱法测定镁、锌 ,以原子发射光谱法测定钾。对样品处理方法、干扰、线性范围及检出限进行了考察。建立了快速测定蘑菇中钾、镁、锌的火焰原子光谱法。相对标准偏差小于 2 8% ,加标回收率为 97 9%～ 1 0 1 6%。 The incomplete digestion and suspension sampling technology mushroom sample processing, that is, first with low concentration of HNO3 digestion samples to the solution was transparent, and then the agar solution was suspended a small amount of insoluble material, the sample solution. Respectively Sr2 + solution and NaCl solution as magnesium, potassium release agent and deionizing agent. Determination of magnesium and zinc by atomic absorption spectrometry, Determination of potassium by atomic emission spectrometry. The sample processing method, interference, linear range and detection limit were investigated. The rapid determination of potassium, magnesium and zinc in mushroom by flame atomic spectrometry was established. The relative standard deviations (RSDs) were less than 28% and the spiked recoveries were 97 9% ~ 1 0 1 6%.