1. The gravimetric method for determinating organic phosphonic acid HPBA with quinoline phosphomolybdate is studied.
   用喹啉磷钼酸盐重量法对有机膦酸HPBA主含量的测定进行了分析研究。
2. There is little study on the selection of liquid of pre - filming after the acid wash by hydroxy ethidine phosphonic acid (HEDP).
   羟基乙叉二膦酸酸洗后预膜液的选择较少有人研究,而适当的预膜钝化是防止酸洗后金属表面返锈的必要措施。
3. E—M water treatment agent for boilers,composed of ethylenediamine tetramethylene phosphonic acid(EDTMP) and hydrolyzed polymaleic anhydride (HPMA),and its applications are introduced in this article.
   介绍由乙二胺四亚甲基膦酸(EDTMP)和水解聚马来酸(HPMA)组成的锅炉水处理剂E—M配方及其应用实例。

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