標(biāo)準(zhǔn)號(hào)：ISO 3706-1976
中文標(biāo)準(zhǔn)名稱：工業(yè)(包括食品)用磷酸 氧化磷(V)總含量的測(cè)定 磷鉬酸喹啉重量法
英文標(biāo)準(zhǔn)名稱：Phosphoric acid for industrial use (including foodstuffs); Determination of total phosphorus(V) oxide content; Quinoline phosphomolybdate gravimetric method
標(biāo)準(zhǔn)類型：G10
發(fā)布日期：1999/12/31 12:00:00
實(shí)施日期：1999/12/31 12:00:00
中國(guó)標(biāo)準(zhǔn)分類號(hào)：G10
國(guó)際標(biāo)準(zhǔn)分類號(hào)：71.060.30
適用范圍：Applicable to products whether or not they are homogeneous and whether or not they contain polyphosphoric acids. Specifies preliminary hydrolysis of the polyphosphoric acids by boiling in the presence of hydrochloric acid. The precipitation of the phosphoric acid is carried out in the form of quinoline phosphomolybdate in the presence of acetone. Filtration by a filter crucible, washing, drying and weighing of the precipitate.