| 原子吸收法和分光光度法检测废液中铁的比较 |
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| 引用本文： | 常国华,马明广,徐飞,张鸣,常进文.原子吸收法和分光光度法检测废液中铁的比较[J].甘肃高师学报,2013,18(2):44-46. |
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| 作者姓名： | 常国华 马明广 徐飞 张鸣 常进文 |
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| 作者单位： | 兰州城市学院化学与环境科学学院,甘肃兰州,730070 |
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| 摘 要： | 分别用火焰原子吸收法和1,10-菲啰啉分光光度法测定铬铁废液中铁的总量.绘制了两种方法的标准曲线,测定了空白值、加标回收率和标准样品.两种方法的空白值都比较稳定,相关性以及斜率等数值都很接近,它们的准确度都比较好,相对标准偏差分别为1.2%和2.6%.两者的平均回收率分别为108%和94%,基本符合实验要求.因此,两种方法的测定结果都在真值允许范围内,它们的标准曲线,精密度和准确性都比较好.两种方法的结果通过t检验,无显著性差异.两者都适用于低浓度的铁溶液,但分光光度法灵敏度稍高.
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| 关 键 词： | 火焰原子吸收法 1 10-菲啰啉分光光度法 铁 |
Comparison of Determination of Iron in Waste Water with Atomic Absorption and 1, 1O-bathophenanthroline Spectrophotometry |
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| CHANG Guo-hua
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MA Ming-guang
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XU Fei
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ZHANG Ming
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CHANG Jin-wen.Comparison of Determination of Iron in Waste Water with Atomic Absorption and 1, 1O-bathophenanthroline Spectrophotometry[J].Journal of Gansu Normal College,2013,18(2):44-46. |
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| Authors: | CHANG Guo-hua MA Ming-guang XU Fei ZHANG Ming CHANG Jin-wen |
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| Institution: | (School of Chemistry and Environmental Science, Lanzhou City University, Lanzhou Gansu 730070) |
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| Abstract: | The total amount of iron in waste water containing iron and chromium ions was determined by atomic absorption and 1,10- Bathophenanthroline spectrophotometry, respectively. Then standard curve, blank value, recovery rate and the determination result of standard samples of each method were given. The results showed that the blank values of the two methods were relatively stable, their correlation and slope values were quietly similar, their accuracy were quietly good, and relative standard deviations were 1.2% and 2.6% respectively. The average recovery rates were 108% and 94% respectively, which can meet experimental requirements basically. Therefore, the measuring results of two methods are not beyond the scope of real value. Their standard curve, precision and accuracy were satisfactory. The two methods which were detected by t determination were no significant difference in determination. They were both applicable to determine low concentration of iron solutions, but the sensitivity of 1, 10-bathophenanthroline spectrophotometry was higher slightly. |
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| Keywords: | atomic absorption 1 10-bathophenanthroline spectrophotometry iron ion |
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