水和废水中黄磷的测定

试验了黄磷在紫外光区的吸收光谱,建立了紫外分光光度法测定水和废水中黄磷的方法.该方法不需酸化、氧化,可在萃取后直接比色测定.当样品中含有石油类干扰物质时,可用含氧化剂的酸性水溶液对萃取液进行反萃取即能将其排除.该方法灵敏,具有测定范围宽、准确度高、精密度好、操作简便等特点.

Determination of Yellow Phosphorusin Water and Wastewater

The absorption spectrum of yellow phosphorus within ultraviolet area was tested. the method to determine yellow phosphorus in water and wastewater using ultraviolet spectrophotometry analysis, which need no acidation and oxidation, and can colorimetric determination directly. When there had disturbance substance as petroleum materials in samples, disturbance substance can be removed in the anti extraction process in which acid water solution which contained oxidant was taken as extraction liquid. This method was sensitive, had a wide determination limit and high determination accuracy and easy use.