原子吸光分析法による鉄鋼中のりんの間接定量
1975 年 61 巻 7 号 p. 1063-1068
詳細
1975 年 61 巻 7 号 p. 1063-1068
An atomic absorption spectrometric study was carried out to establish fundamental conditions in the indirect determination of phosphorus in iron and steel. This method involves the extraction of phosphomolybdate (heteropolyacid H3PO4·12Mo03) complex with butyl acetate and the measurement of absorbance of the molybdenum in the extract.
The interference from iron and other elements such as Mn, Ni, Cr, Cu, Mo, Co, As, and W was found to be uninfluential, while the influence of V and Ti was not avoidable if they are over 5mg and 0.5rng respectively.
The results obtained were satisfactory for the determination of phosphorus in iron and steel. The coefficient of variation was 3.56% or 1.55% for 0.011% or 0.052% phosphorus respectively.
