论文部分内容阅读
磷化腐植酸钙,即HA—Ca—P是由褐煤腐植酸、钙离子和磷酸盐在pH=5或pH=7时直接反应制得的。通过渗析法已分离出这种络合物,并且得到了其电泳和热分析图谱。通过不同pH值时6种抽提剂溶液的作用,估价了HA—Ca—P络合物中磷的有效性。pH=7时的HA—Ca—P络合物电泳图表明磷与HA的迁移相同。就腐植酸钙而言,微差导系数热重分析曲线(DTG)显示了核分解温度稍有降低。磷的有效性研究表明在络合物中磷是一种有效成分。
Phosphated humic acid calcium, HA-Ca-P, is produced by direct reaction of brown coal humic acid, calcium ions and phosphates at pH = 5 or pH = 7. This complex has been isolated by dialysis and has been characterized by electrophoresis and thermal analysis. The effectiveness of phosphorus in HA-Ca-P complexes was evaluated by the effect of six extractant solutions at different pH values. The electropherogram of HA-Ca-P complex at pH = 7 showed the same migration of phosphorus and HA. In the case of calcium humate, the differential thermal coefficient thermogravimetric analysis (DTG) curve shows a slight decrease in the nucleation temperature. Phosphorus effectiveness studies have shown that phosphorus is an active ingredient in complexes.