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根据文献资料介绍铝与(口底)唑发生反应能生成可溶性的有色化合物,在测定铝的条件下,钢内的一般组分不会与(口底)唑生成有色化合物,我们对该方法作了试验。一、试剂①硫酸1N溶液:加28.6毫升H_2SO_4(此重=1.84)于水中,稀至1000毫升;④硝酸:1:1溶液;③盐酸:1:1溶液;④硝酸与盐酸的混合酸:二份硝酸(1:1)与一份盐酸(1:1)混合,该混合酸需在临用前进行;⑤抗坏血酸1%溶液;⑥(口底)唑0.01%溶液;⑦缓冲混合液。
According to the literature, the reaction of aluminum with (bottom) azoles can generate soluble colored compounds. Under the conditions of aluminum determination, the common components in the steel do not form colored compounds with (bottom) The test. Reagents ① sulfuric acid 1N solution: add 28.6 ml H_2SO_4 (weight = 1.84) in water, diluted to 1000 ml; ④ nitric acid: 1: 1 solution; ③ hydrochloric acid: 1: 1 solution; ④ nitric acid and hydrochloric acid mixed acid: Two nitric acid (1: 1) with a hydrochloric acid (1: 1) mixed, the mixed acid to be carried out immediately before use; ⑤ ascorbic acid 1% solution; ⑥ (mouth) oxazole 0.01% solution; ⑦ buffer mixture.