| 多波长线性回归分光光度法同时测定油中的铁、钴、镍 |
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| 引用本文： | 马继平,吴海平,王兴宇.多波长线性回归分光光度法同时测定油中的铁、钴、镍[J].光谱学与光谱分析,2000,20(1):122-124. |
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| 作者姓名： | 马继平 吴海平 王兴宇 |
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| 作者单位： | 1. 抚顺石油学院应用化学系,113001,抚顺
2. 抚顺石油一厂热电车间,113008,抚顺 |
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| 摘 要： | 本文提出一种同时测定铁，钴，镍的新方法，即多波长线性回归分光光度法，利用铁与５－Ｂｒ－ＰＡＤＡＰ形成的络合物在７５０ｎｍ处吸收峰不受钴，镍干扰的特点，在７５０ｎｍ处于工作曲线法测定铁的含量，对于钴，镍在５５０－６００ｎｍ内采用多波长线性回归法测定。应用于合成样及油样中铁，钴，镍含量的测定，结果令人满意，回收率为９５．７％￣１０４．３％，相对标准偏差为１．４％￣３．８％。
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| 关 键 词： | 多波长线性回归 分光光度法 铁 钴 镍 石油 |
| 修稿时间： | 1998年4月20日 |
Simultaneous Determination of Iron, Cobalt and Nickel in Oil by Multiwavelength Linear Regression Spectrophotometry |
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| Jiping MA,Haiping WU,Xingyu WANG.Simultaneous Determination of Iron, Cobalt and Nickel in Oil by Multiwavelength Linear Regression Spectrophotometry[J].Spectroscopy and Spectral Analysis,2000,20(1):122-124. |
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| Authors: | Jiping MA Haiping WU Xingyu WANG |
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| Institution: | Department of Applied Chemistry, Fushun Petroleum Institute, 113001 Fushun. |
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| Abstract: | A method for simultaneous determination of iron, cobalt and nickel, using multiwavelength linear regression spectrophotometry, is proposed. Since there were no interferences caused by cobolt and nickel complexes at the peak of iron complex compound formed with 5-Br-PADAP at 750 nm, the content of iron was determined by working-curve method at 750 nm. Cobalt and nickel were simultaneously determined by multiwavelength linear regression method over the range 550-600 nm. The method was applied to the analysis of iron, cobalt and nickel in synthetic mixtures and oil samples with satisfactory results. The recovery was 97.5%-104.3% and the RSD% was 1.4%-3.8%. |
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| Keywords: | Simultaneous determination Iron Cobalt Nickel Oil Multiwavelength linear regression spectrophotometry |
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