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Direct Determination of Lead in Foods by Solid Sampling Electrothermal Vaporization Atomic Fluorescence Spectrometry
Shang, Derong1; Zhao, Yanfang1; Zhai, Yuxiu1; Ning, Jinsong1; Duan, Delin2; Zhou, Yongdong3
2016-09-01
Source PublicationANALYTICAL SCIENCES
Volume32Issue:9Pages:1007-1010
SubtypeArticle
AbstractA solid sampling method for the determination of lead in foods (including grains, vegetables and seafoods) using electrothermal vaporization atomic fluorescence spectrometry was established. The method introduced samples using electrothermal vaporization by quartz furnace and used on-line ashing and vaporization to remove matrix interferences for the specific trap of lead. It was proven by the certified reference material (CRM) and the recovery rate of the standards that the electrothermal vaporization was stable and there was no effect for sampling difference. The best operating program and parameters for the new method included ashing (850 C, 160 s), vaporization and trap (1050 degrees C, 80 s; 800 degrees C, 10 s), release (800 degrees C, 10 s), and mixed Ar + H-2 (85:15%, v/v) as carrier gas with flow rate of 500 mL/min. The relative standard deviations of repeated Pb measurements in CRMs were all below 5.0%, and the recovery rate ranged from 90.0 - 110.0%. The limit of detection (LOD) for the new method was 3.0 pg and the limit of quantification (LOQ) was 10.0 pg. The total time of analysis was less than 6 min. No significant differences existed between the results measured by the new method and microwave ICP-MS.
KeywordLead Solid Sampling Electrothermal Vaporization Atomic Fluorescence Spectrometry Foods
Indexed BySCI
Language英语
WOS IDWOS:000384277400014
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/135851
Collection实验海洋生物学重点实验室
Affiliation1.Chinese Acad Fishery Sci, Yellow Sea Fishery Res Inst, Nanjing Rd 106, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Nanhai Rd 7, Qingdao 266071, Peoples R China
3.Yancheng Hairui Food Co Ltd, Dafeng 224005, Peoples R China
Recommended Citation
GB/T 7714
Shang, Derong,Zhao, Yanfang,Zhai, Yuxiu,et al. Direct Determination of Lead in Foods by Solid Sampling Electrothermal Vaporization Atomic Fluorescence Spectrometry[J]. ANALYTICAL SCIENCES,2016,32(9):1007-1010.
APA Shang, Derong,Zhao, Yanfang,Zhai, Yuxiu,Ning, Jinsong,Duan, Delin,&Zhou, Yongdong.(2016).Direct Determination of Lead in Foods by Solid Sampling Electrothermal Vaporization Atomic Fluorescence Spectrometry.ANALYTICAL SCIENCES,32(9),1007-1010.
MLA Shang, Derong,et al."Direct Determination of Lead in Foods by Solid Sampling Electrothermal Vaporization Atomic Fluorescence Spectrometry".ANALYTICAL SCIENCES 32.9(2016):1007-1010.
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