硫酸铜在化学工业等生产中有广泛的应用。但其中的砷含量较高时,不能用于饲料工业中。我国国家标准规定,饲料级硫酸铜中的砷含量不能超过0.0005%。根据沉淀溶度积原理,利用吸附剂吸附分散在溶液中的沉淀质点,并使之凝聚下来以除去砷杂质。实验方法是:取一定量的硫酸铜溶液,用 NH_3水或 NaOH 调节 pH■5,加活性炭 Copper sulfate in the chemical industry and other production has a wide range of applications. However, when the arsenic content is high, it can not be used in the feed industry. China’s national standards, feed-grade copper sulfate in the arsenic content can not exceed 0.0005%. According to the principle of precipitation solubility product, the adsorbent is used to adsorb the precipitated particles dispersed in the solution and coagulate to remove arsenic impurities. The experimental method is: take a certain amount of copper sulfate solution, with NH_3 water or NaOH to adjust pH ■ 5, plus activated carbon