使用草酸作为沉淀剂提高腐植酸品质  

Humic Acid Quality: Using Oxalic Acid as Precipitating Agent

作　　者：Guido Meyer Renate Klcking 张彩凤[2,3] 王丽君[3] 

机构地区：[1]工艺过程开发研究所 [2]中国腐植酸工业协会质量检测中心,太原030012 [3]太原师范学院,太原030012

出　　处：《腐植酸》2013年第6期37-39,共3页Humic Acid

摘　　要：用有机溶剂对冷冻干燥的泥炭样品进行索氏提取和使用有机酸使腐植酸沉淀的两种纯化腐植酸的方法已经被探讨。用有机溶剂萃取,能够有效去除可溶性有机杂质(高达12%),而对腐植质没有明显损失和改性。使用有机酸为沉淀剂是为了脱除腐植酸中的卤素和无机酸。本文比较了用上述方法获得腐植酸与用传统方法盐酸沉淀获得腐植酸。Two modifications of the standard procedure for the isolation of humic acids（HA） from peat samples have been explored. The modifications comprise a Soxhlet-extraction of the freeze-dried peat sample with an organic solvent and the use of organic acids for the precipitation of the HA fraction. The organic extraction effectively removes organo- soluble impurities （up to 12%） without obvious signs of alteration and loss of humic material. The use of organic acids as precipitant aims at the halogen and mineral acid free preparation of HA. Here, the quality of HA obtained using the modofied procedure is compared to those obtainde by traditional HCI precipitation.

关 键 词：腐植酸 沉淀 有机酸 提纯 有机卤素化合物 

分 类 号：S141[农业科学—肥料学]