| 石墨炉原子吸收法测定食用植物油中微量镉 |
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| 引用本文： | 龚惠群,王久荣,郭小林.石墨炉原子吸收法测定食用植物油中微量镉[J].农业环境科学学报,1996(3). |
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| 作者姓名： | 龚惠群 王久荣 郭小林 |
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| 作者单位： | 中国科学院长沙农业现代化研究所!410125(龚惠群，王久荣)，中国科学院长沙农业现代化研究所!410125湖南医科大学(郭小林) |
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| 基金项目： | 中国科学院“八五”重点应用研究项目!污染农田农业生态整治与安全高效利用模式研究 |
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| 摘 要： | 建立了食用植物油（菜籽油、豆油、花生油）经氢氧化钾—乙醇溶液皂化后，直接注入石墨炉测定微量镉的分析方法。本方法以除隔处理的商品精制油作为基质油，加入镉标准溶液，建立标准曲线进行定量。着重研究了石墨炉程序升温条件。方法的回收率为90％—112％，变异系数5．3％－9．8％。
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| 关 键 词： | 镉 石墨炉原子吸收法 食用植物油 |
Determination of Trace Cadmium in Cooking Oils by Graphite Furnace Atomic Absorption Spectrometry. |
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| Gong Huiqun et al..Determination of Trace Cadmium in Cooking Oils by Graphite Furnace Atomic Absorption Spectrometry.[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),1996(3). |
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| Authors: | Gong Huiqun |
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| Abstract: | The paper describes a method for the determination of trace cadmiumin vegetable oils-rapeseed oil, soybean oil and peanut oil. The oil samples were saponified with alcoholic KOH, then directly injected into the graphitefurnace of atomic absorption spectrophotometer. A free-Cd commercial cooking oil obtained by HNO_3 extractions was used as a blank matrix .The quantitative analysis of Cd was carried out by calibration curve prepared by adding standard Cd solutions into the free-Cd matrix. The conditions of increasing the temperature stepwise for graphite furnace were emphatically studied in this paper. The recovery was 90-112%and RSD was 5.3-9.8%. |
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| Keywords: | cadmium graphite furnace AAS cooking oil |
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