Direct Ultratrace Detection of Lead in a Single Hair Using Portable Electromagnetic Heating Vaporization-Atmospheric Pressure Glow Discharge-Atomic Emission Spectrometry

被引:26
作者
Cai, Zhaoqing [1 ,2 ]
Qian, Ling [1 ]
Peng, Xiaoxu [1 ]
Wang, Zheng [1 ,2 ]
机构
[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China
[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
DIELECTRIC BARRIER DISCHARGE; ELECTROTHERMAL VAPORIZATION; WATER SAMPLES; HYDRIDE GENERATION; ELEMENTAL ANALYSIS; PLASMA; CATHODE; CADMIUM; MANGANESE; MERCURY;
D O I
10.1021/acs.analchem.1c03057
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
In this paper, the first demonstration of direct ultratrace determination of lead in a single human hair by direct current- atmospheric pressure glow discharge-atomic emission spectrometry (DC-APGD-AES) coupled with electromagnetic heating vaporization (EMV) was described. Only the ultramicro mass of a human hair sample (about 0.15 mg, often a single human hair) was required during the analysis, and fast detection was implemented without tedious pretreatment processes, such as grinding and digestion. A limit of detection (LOD) of 30.8 mu g kg(-1) (4.8 pg) for Pb was obtained under optimized conditions, which was even equivalent to that of conventional LA-ICP-MS/ETV-ICP-MS/GFAAS. EMV-APGD-AES, meanwhile, can facilitate miniaturization and portability with low power and small size. The accuracy and practicality of the method were verified by the analysis of certified reference materials (CRMs) GBW09101b (human hair) and human hair samples from three volunteers. A simple, efficient, and low-cost method for detecting Pb in human hair has been developed.
引用
收藏
页码:14701 / 14707
页数:7
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