ISO 7100-1983 标准详情
- 标准号:ISO 7100-1983
- 中文标题:工业(包括食品工业)用磷酸.钒含量的测定.钒酸磷钨光谱测定法
- 英文标题:phosphoric acid for industrial use(including foodstuffs)-determination of vanadium content-phosphotungsten vanadate spectrometric method
- 标准类别:国际标准化组织标准ISO
- 发布日期:1983-06-15
A yellow complex is formed by reaction of the vanadium present in a test portion with phosphoric acid and sodium tungstate in acid medium. The spectrometric measurement of the absorbance is carried out at a wavelength of about 425 nm. The method is a
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