| 速差动力学比例方程法同时测定微量磷砷 |
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| 引用本文： | 字明显,刘海澜,赵青岚.速差动力学比例方程法同时测定微量磷砷[J].高等学校化学学报,1988,9(10):1080. |
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| 作者姓名： | 字明显 刘海澜 赵青岚 |
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| 作者单位： | 河南大学化学系 |
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| 摘 要： | 文献报道的磷砷测定,需分两步进行1~3]。作者在实验中发现,磷砷(Ⅴ)与钼酸铵及抗坏血酸作用,形成两种具有相似吸光特性的钼蓝,但生成速率常数有差异。据此,本文提出了用比例方程法4]同时测定两组分的含量。
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| 关 键 词： | 速差动力学法 比例方程法 微量磷砷的测定 |
| 收稿时间： | 1987-04-22 |
Simultaneous Differential Reaction-Rate Determination of Micro Phosphorus and Arsenic by the Method of Proportional Equations |
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| Zi Mingxian,Liu Hailan,Zhao Qinglan.Simultaneous Differential Reaction-Rate Determination of Micro Phosphorus and Arsenic by the Method of Proportional Equations[J].Chemical Research In Chinese Universities,1988,9(10):1080. |
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| Authors: | Zi Mingxian Liu Hailan Zhao Qinglan |
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| Institution: | Department of Chemistry, Henan University, Kaifeng |
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| Abstract: | The article describes a method of simultaneous determination of micro phosphorus and arsenic by differential reaction-rate method. The proportional coefficients of K3min(P),K3min(As), K9min(P) and K9min(As) in solutions containing 0.3755mol·L-1 of sulphuric acid and 0.4% ammonium molybdate at 65℃ are reported. The method described is suitable for simultaneous determination of phosphorus and arsenic in a ratio of (P:As) more than 1.5. The relative error and relative standard deviation are within 1.0%. |
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| Keywords: | Differential reaction-rate method A method of proportional equation Determination of micro phosphorous and arsenic |
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