After the corn kernels,shaft and straw were cooked with sulfuric acid and hydrogen peroxide,the content of total potassium in the samples was determined by icp-aes instead of flame photometer,the results of the two methods were analyzed.The results showed that there was a significant linear correlation between the two methods.The results of deter-mination of total potassium content in corn by icp-aes showed that the precision and recovery rate were both good,it can provide reference for the determination of total potassium content in corn samples.
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