可再生能源2017，Vol.35Issue(11)：1588-1594,7.
秸秆灰中水溶钾含量三种检测方法的比较
A comparison on three methods for measuring of water-soluble potassium content in straw ash
摘要
Abstract
Water-soluble potassium content is one of the important indicators to evaluate the fertilizer property of straw ash. In this study, base on flame photometer (FP) method, the difference between the measurement results of X-ray fluorescence spectrometry (XRF) and potassium-ion selective electrode (PISE) and that of FP were studied. The results shows that for corn straw and wheat straw ashes prepared at 550℃, the relative error of PISE are less than-6%~6%. The measured potassium content of XRF is higher than that of FP and the relative error is less than 18%. Sensitivity analysis shows that the inaccuracy of potassium content in original ash is the dominant error source in XRF.关键词
秸秆灰/水溶钾/火焰光度计法/K+选择性电极法/X射线荧光光谱法Key words
straw ash/water-soluble potassium/FP/PISE/XRF分类
能源科技引用本文复制引用
张毅,于如军,张政清,高振强,杨彬彬,何芳..秸秆灰中水溶钾含量三种检测方法的比较[J].可再生能源,2017,35(11):1588-1594,7.基金项目
国家自然科学基金项目(51676115). （51676115）
