黄磷废水中含有元素磷、正磷酸盐和偏磷酸盐等含磷物质。测定时,首先将水样制成分析溶液,即将各种状态的磷转化为可溶性的正磷酸盐,然后测定之。但目前我国还没有统一的标准分析方法。根据资料介绍,正磷酸盐测定方法常用的有,钒钼黄比色法和磷钼等比色法。后者按还原剂的不同,又可分为下面几种:(1)氯化亚锡法;(2)抗坏血酸法; Yellow phosphorus wastewater contains elemental phosphorus, orthophosphates and metaphosphates and other phosphorus-containing substances. Determination, the first water samples made of the analytical solution, that is, various forms of phosphorus into soluble orthophosphate, and then measured. However, at present, there is no unified standard analysis method in our country. According to the information, commonly used methods of determination of orthophosphate, vanadium molybdenum yellow colorimetric method and phosphomolybdenum and other colorimetry. The latter by reducing agent, can be divided into the following categories: (1) stannous chloride method; (2) ascorbic acid method;