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中国无机分析化学:2022,12(3):139-144
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超声酸提取-电感耦合等离子体发射光谱(ICP-OES)法测定复配矿物质中铁锌
丁玉龙
(上海市质量监督检验技术研究院)
Determination of Fe and Zn in Compound Minerals by Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES) with Ultrasonic Acid Extraction
DING Yu-long
(Shanghai Quality Supervision and Inspection Technology Research Institute)
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投稿时间:2022-03-22    修订日期:2022-03-22
中文摘要: 建立了复配矿物质中铁、锌的超声酸提取-电感耦合等离子体发射光谱测试方法。方法以10%硝酸为前处理试剂,利用超声辅助提取,优化了仪器检测的条件,消除干扰,并进行方法检出限、精密度和方法准确性等实验。方法的铁、锌检出限分别为1 mg /kg和0.5 mg/kg,线性范围为0.0~5.0 mg/L,相关系数(r)优于0.995。相对标准偏差RSD(%)均在5.0%以下,加标回收率在91.4% ~107.9%,实物加标回收与加标值一致。实验结果表明所建立的方法灵敏度高、简便、快速、准确,适用于复配矿物质中铁、锌的测定。
Abstract:A method for the determination of iron and zinc in meal compound minerals by ultrasonic acid extraction ICP-OES method was developed. 10% nitric acid was used as pretreatment reagent, using ultrasonic assisted extraction. The experimental conditions was optimized, the interference was eliminated. Some experiments including detection limit, precision and accuracy was performed. The detection limit of iron and zinc was 1mg/kg and 0.5mg/kg , while the linear range was 0 ~5.0 mg/L and the linear coefficient (r) is better than 0.995. The precision of the method (RSD %) were less than 5.0%. The determined iodine contents were in good agreement with the certified values. The recoveries of real samples are from 91.4% to 107.9%. The experiments showed that this method was sensitive, simple and rapid, and accurate for the determination of iron and zinc contents in meal compound minerals .
keywords: Minerals  Iron  Zinc  Ultrasonic  ICP-OES
文章编号:     中图分类号:O657.63    文献标志码:
基金项目:食品安全国家标准修订资助项目(spaq-2021-17)
引用文本:
丁玉龙.超声酸提取-电感耦合等离子体发射光谱(ICP-OES)法测定复配矿物质中铁锌[J].中国无机分析化学,2022,12(3):139-144.
DING Yu-long.Determination of Fe and Zn in Compound Minerals by Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES) with Ultrasonic Acid Extraction[J].Chinese Journal of Inorganic Analytical Chemistry,2022,12(3):139-144.

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