| 偏最小二乘分光光度法同时测定痕量铁、锰、铜、锌、钴和镍 |
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| 引用本文： | 白玲,倪永年.偏最小二乘分光光度法同时测定痕量铁、锰、铜、锌、钴和镍[J].分析试验室,2002,21(1):39-42. |
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| 作者姓名： | 白玲 倪永年 |
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| 作者单位： | 1. 江西农业大学基础课部,南昌,330045
2. 南昌大学化学系,南昌,330047 |
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| 摘 要： | 痕量Fe^3 ,Mn^2 ,Cu^2 ,Zn^2 ,Co^2 ,Ni^2 与2－（5－溴－2－吡啶偶氮）－5－二乙氨基苯酚（5－Br-PADAP)和溴化十六烷基三甲基铵（CTMAB）在PH8．3时发生高灵敏显色反应，所形成的三元胶束络合的吸收光谱严重重叠，采用偏最小二乘法（PLS）辅助分光光度法测定了合成试样及饲料中上述6种痕量组分，结果表明，PLS法是化学计量学中一种可适用于基体较复杂的实际试样中痕量组分分光度同时测定的多元计算方法。
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| 关 键 词： | 偏最小二乘法 分光光度法 同时测定 痕量分析 铁 锰 铜 锌 钴 镍 饲料 |
| 文章编号： | 1000-0720(2002)01-0039-03 |
Simultaneous spectrophotometric determination of trace iron, manganese, copper, zinc, cobalt and nickel by partial least squares method |
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| Abstract: | A sensitive chromogenic reactions of trace Fe 3+ ?Mn 2+ ?Cu 2+ ?Zn 2+ ?Co 2+ and Ni 2+ with 2 (5 bromo 2 pyridylazo) 5 diethylaminophenol(5 Br PADAP) and cetyltrimethy lammonium bromide(CTMAB) in pH 8.3 buffer solutions were studied. Their absorption peaks were seriously overlapped. Partil least squares(PLS) method was used as mathematical pattern to resolve the overlapping spectra. The proposed method was applied to the simultaneous determination of iron,manganese,copper,zinc,cobalt and nickel in synthetic and real samples with satisfactory results. |
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| Keywords: | Manganes Copper Zinc Cobalt Nickel Partial least squares Spectrophotometry Simultaneous determination |
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