Ferrotungsten—Determination of arsenic content—The molybdenum blue photometrie method and inductively coupled plasma-atomic emission spectrometry
全国生铁及铁合金标准化技术委员会
GB/T 7731的本部分规定了用钼蓝光度法和电感耦合等离子体原子发射光谱法测定钨铁中的砷量。
本部分适用于钨铁中砷含量的测定。钼蓝光度法测定范围（质量分数）：0.010%～0.10% ；电感耦合等离子体原子发射光谱法测定范围（质量分数）：0.010%～0.20%。
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