一、前言:磷的比色测定,目前不外是钒钼黄法和钼蓝法两类,前者因灵敏度不高而较少采用,然而硅锰合金由于硅高达20%,磷在0.1%左右,硅是磷量的200俯,为避免硅的干扰一般都只好采和硅钼黄法,硅钼黄法不仅灵敏度低,操作手续繁复、分析一个试样须 First, the preface: Phosphorus colorimetric assay, the current is nothing but the vanadium molybdenum yellow and molybdenum blue two types, the former due to low sensitivity and less used, however, silicon-manganese alloy as silicon up to 20%, phosphorus at about 0.1% , Silicon is the amount of phosphorus 200 overlooking the pitch, in order to avoid the interference of silicon generally have to adopt and silicon molybdenum yellow method, silicon molybdenum yellow method not only low sensitivity, complex procedures, the analysis of a sample