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在0.4mol/L硫酸介质中,在草酸及乳化剂OP存在下,锡与二溴羟基苯基荧光酮形成1:3配合物。可不经分离直接测定碳钢及低合金中0.010～0.08％锡。
In 0.4 mol / L sulfuric acid medium, tin and dibromohydroxyphenylfluorone form a 1: 3 complex in the presence of oxalic acid and emulsifier OP. Can be directly measured without separation of carbon steel and low alloy 0.010 ~ 0.08% tin.