| 微波消解-流动注射化学发光法快速测定小麦中的稀土元素 |
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| 引用本文： | 高向阳,王坤,黄进慧.微波消解-流动注射化学发光法快速测定小麦中的稀土元素[J].粮食储藏,2009,38(5):44-46. |
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| 作者姓名： | 高向阳 王坤 黄进慧 |
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| 作者单位： | 河南农业大学食品科学技术学院; |
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| 基金项目： | 河南省教育厅自然科学研究项目资助(项目编号:2007550008) |
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| 摘 要： | 为建立一种快速测定小麦中稀土元素的新方法,小麦全粉经微波消解后,利用稀土元素对Luminol-K2S2O8流动注射化学发光体系的线性抑制作用进行测定。结果表明：样品中的稀土元素含量为7.65μg/g~10.12μg/g,线性相关系数r=0.9991,RSD为4.0%~7.4%,检出限为3.82×10-9g/g,硬质紫麦加标回收率为96.30%~103.90%。该法快速简便、灵敏准确,用于小麦中微痕量稀土元素的测定,结果令人满意。
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| 关 键 词： | 微波消解 流动注射化学发光 小麦 稀土元素 |
RAPID DETERMINATION OF RARE EARTH ELEMENTTS IN WHEAT BY FLOW INJECTION-CHEMILUMINESCENCE AFTER MICROWAVE DIGESTING SAMPLES |
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| Gao Xiangyang Wang Kun Huang Jinhui.RAPID DETERMINATION OF RARE EARTH ELEMENTTS IN WHEAT BY FLOW INJECTION-CHEMILUMINESCENCE AFTER MICROWAVE DIGESTING SAMPLES[J].Grain Storage,2009,38(5):44-46. |
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| Authors: | Gao Xiangyang Wang Kun Huang Jinhui |
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| Institution: | College of Food Science and Technology;Henan Agricultural University 450002 |
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| Abstract: | To establish a new analytical method for rapid determination of rare earth elements in wheat,the Luminol-K2S2O8 flow injection-chemiluminescence system was applied for determination after microwave digesting samples in this experiment.The results showed that the content of rare earth elements in samples was from 7.650μg/g to 10.12μg/g,the linear correlation coefficient（r） was 0.9991,the relative standard deviation（RSD）was in the range of 4.0%～7.4%,the lowest detection limits was 3.82×10-9g/g,the recovery of standard addition was in the range of 96.30%~103.9% on violet hard wheat sample.This method was found to be fast,convenient,sensitive,accurate and analytical results were satisfactory for determination of rare earth elements in wheat. |
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| Keywords: | microwave digestion flow injection-chemiluminescence wheat rare earth elements |
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