采用微波消解-等离子体发射光谱法同时测定果汁中K、P含量,优化了实验所需的各种条件。与国家标准方法湿法消解-分光光度法的测定结果作了实验比较,结果表明本实验方法更简单、高效,节省了样品的前处理时间,减小了最终结果的误差。该法灵敏度高、线性范围宽、加标回收率高,结果令人满意。 Microwave digestion - plasma emission spectrometry simultaneous determination of K, P content in fruit juice, to optimize the conditions required for the experiment. Compared with the results of wet-digestion-spectrophotometry by the national standard method, the experimental results show that the experimental method is simpler and more efficient, which saves sample pretreatment time and reduces the final error. The method has high sensitivity, wide linear range, high recovery rate and satisfactory results.