摘要
草酸络合能力强,水解能力亦很强,活化钾能力最强,其次为苹果酸。柠檬酸、酒石酸、乙酸、乳酸活化钾的能力基本相同。Elovich方程判定系数R2 为0 .95 3～0 .996 ,双常数方程的判定系数R2 为0 .95 8～0 .996 ,拟合效果较好,达极显著水平;抛物线扩散方程判定系数R2 为0 .84 6～0 .94 1,拟合效果较差。
The ability of six kinds organic acids to extract potassium in K-feldspar was in the order of oxalic acid,malic acid,tartaric acid citric acid acetic acid and lactic acid.The mechanism of potassium release extracted by low-weight organic acid was the result of acidic hydrolysis and complexation reaction. The Elovich (R^2 0.953～0.996)and power function equation(R^2 0.958～0.996) were the best to describe the reaction of potassium release. The parabolic diffusion law function equation(R^2 0.846～0.941)could not describe the release of potassium as shown by higher Se and lower R^2values.
出处
《辽宁农业科学》
2005年第3期9-11,共3页
Liaoning Agricultural Sciences
关键词
钾长石
低分子量有机酸
连续浸提
动力学
释放
K-feldspar
Low-molecular-weight organic acid
Sequential extraction
Kinetics
Release
