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表2 硫酸亚铁铵两种纯度分析结果对比

序号 纯度/% 序号 纯度/% 滴定分析法 分光光度法 滴定分析法 分光光度法 1 63.68 52.75 14 92.27 71.44 2 88.35 80.79 15 87.32 83.49 3 88.74 87.64 16 92.14 74.04 4 86.86 86.81 17 87.94 91.82 5 88.13 74.97 18 87.40 90.86 6 90.56 83.05 19 88.03 81.40 7 86.89 65.29 20 87.17 86.97 8 92.75 89.74 21 93.61 76.48 9 90.18 53.98 22 90.10 89.79 10 87.15 59.59 23 89.94 87.62 11 82.43 56.15 24 88.94 83.30 12 83.19 82.73 25 87.33 78.76 13 85.23 68.02 26 88.10 80.10