Iron,steel and alloy—Determination of phosphorus content—Bismuth phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate blue spectrophotometric method
全国钢标准化技术委员会
GB/T 223的本部分规定了用铋磷钼蓝分光光度法和锑磷钼蓝分光光度法测定磷含量。
本部分适用于生铁、铸铁、铁粉、碳素钢、低合金钢、合金钢中磷含量的测定，不适用于含铌、钨钢。
方法一测定范围为质量分数0.005%～0.300%，方法二测定范围为质量分数0.01％～0.06％。
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