“总磷”测定中高浓度铁离子干扰的消除  

Interference Cancellation about High Concentration Iron Ions in Measuring Total Phosphorus

作　　者：庞宏[1] 于海霞[1] 宋利臣[2] 

机构地区：[1]佳木斯市环境保护监测站,黑龙江佳木斯154000 [2]黑龙江省环境保护科学研究院,黑龙江哈尔滨150056

出　　处：《环境科学与管理》2010年第8期103-105,共3页Environmental Science and Management

摘　　要：在测定"总磷"过程中,样品中经常含有高浓度铁离子对测定结果产生干扰。根据铁离子的化学特征,选择恰当的掩蔽剂对其掩蔽,可以消除铁离子对测定的干扰。通过对NaOH、氟化钠和EDTA三种掩蔽剂的掩蔽对比,得出氟化钠掩蔽效果最好,而且测量结果稳定,是非常适合的掩蔽剂。The results of total phosphorus always were interfered by high concentration iron ions. According to the chemical character of the iron ion, chose the appropriate shelter reagent and eaneeUed interference of high concentration iron ions. Through the contrast shelter effect of NaOH, NaF and EDTA, the result showed that shelter effect of NaF was the best and the measurements of total phosphorus were stable. So NaF was the better shelter reagent.

关 键 词：总磷 高干扰离子 掩蔽剂 

分 类 号：X832[环境科学与工程—环境工程]