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钢铁中磷的测定目前多采用磷钼蓝光度法及磷钒铝黄光度法,但前者的吸光度稳定时间短,不适用于成批试样的分析;后者的吸光度稳定时间虽然较长但灵敏度低。文献报道了孔雀绿-钼磷杂多酸光度法测定矿石中微量磷的条件,指出此法灵敏度比磷钼蓝光度法高,吸光度24小时不变。本文研究以孔雀绿-磷钼杂多酸光度法则定钢铁中磷的条件,表明,在0.28—
At present, the determination of phosphorus in iron and steel using phosphorus molybdenum blue luminosity method and phosphorus vanadium aluminum yellow luminosity method, but the former absorbance stability time is short, not suitable for bulk sample analysis; the latter of the absorbance stabilization time is longer but the sensitivity low. Reported the malachite green - molybdenum phosphorus heteropoly acid spectrophotometric determination of trace phosphorus in the ore conditions, indicating that the sensitivity of this method is higher than the phosphomolybdate blue method, the absorbance of 24 hours unchanged. In this paper, with malachite green-phosphomolybdic heteropolyacid spectrophotometry to determine the conditions of phosphorus in steel, indicating that 0.28-