ISO 622:1981 固体矿物燃料.磷含量的测定.还原磷钼酸盐光度法

标准编号：ISO 622:1981

中文名称：固体矿物燃料.磷含量的测定.还原磷钼酸盐光度法

英文名称：Solid mineral fuels — Determination of phorphorus content — Reduced molybdophosphate photometric method

发布日期：1981-08

标准范围

为了将磷溶解在溶液中，规定了以下两种方法:在规定的条件下，通过在amuffle炉中灰化去除含碳物质，并通过氢氟酸和硫酸处理提取磷。在硫酸存在下，用硝酸反复氧化去除含碳物质。通过添加钼酸铵和抗坏血酸溶液，并通过可调光学仪器测量所得蓝色溶液的吸光度来进行测定。

For taking the phosphorus into solution the following two methods are specified: The carbonaceous material is removed by ashing in amuffle furnace under specified conditions and the phosphorus is extracted by treatment with hydrofluoric and sulphuric acids. The carbonaceous material is removed by repeated oxidation with nitric acid in the presence of sulphuric acid. The determination is carried out by adding ammonium molybdate and ascorbic acid solution and measuring the absorbance of the resulting blue solution by a siutable optical instrument.

标准预览图