铝的光度测定广泛应用于钢铁分析及有色金属分析中,而在硅酸盐及矿物的分析中应用较少。用于铝比色测定的显色剂颇多,但从选择性与灵敏度来说,以铬天青-S(CAS)较好。铬天青-S 作显色剂,比色测定铝时铁、钛、铬、钒、钼、铜等元素对测定有干扰。铁可以用抗坏血酸掩蔽,但加抗坏血酸后,显色速度变慢,显 The photometric determination of aluminum is widely used in steel analysis and non-ferrous metal analysis, but less in the analysis of silicates and minerals. Chromogenic reagent for aluminum colorimetric determination of a lot, but from the selectivity and sensitivity, chrome blue-S (CAS) is better. Chrome Azure-S as a colorimetric determination of aluminum, iron, titanium, chromium, vanadium, molybdenum, copper and other elements interfere with the determination. Iron can be masked with ascorbic acid, but after adding ascorbic acid, the color development rate is slow, significant