Resumen
Phosphorus content can be determined in the range of 0,000 5 % (m/m) to 0,05 % (m/m). As, Cr, Hf, Nb, Si, Ta, Ti, W interfere, but the interferences can be avoided. The principle is dissolution of a test portion in a mixture of nitric and hydrochloric acids, fuming with perchloric acid, removal of chromium, complexation of silicon, conversion of phosphorus to phosphovanadomolybdic acid, extraction of this compound.
Informaciones generales
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Estado: RetiradaFecha de publicación: 1992-09Etapa: Retirada de la Norma Internacional [95.99]
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Edición: 1Número de páginas: 5
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Comité Técnico :ISO/TC 155
- RSS actualizaciones
Ciclo de vida
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Ahora
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Revisada por
PublicadoISO 11400:2021