NDLI: Determination of total mercury in scalp hair of humans by gold amalgamation cold vapour atomic absorption spectrometry

Please wait, while we are loading the content...

Choice of fluorescence wavelengths for the determination of trace amounts of chlorine by graphite furnace laser-excited molecular fluorescence spectrometry of indium monochloride

Reduction of matrix effects and mass discrimination in inductively coupled plasma mass spectrometry with optimized argon–nitrogen plasmas

Inductively coupled plasma mass spectrometric determination of low-level rare earth elements in rocks using potassium-based fluxes for sample decomposition

Atomic absorption: another way for phase transition characterization

Spectral interference on the lead 283.3 nm line in Zeeman-effect atomic absorption spectrometry

Determination of total mercury in scalp hair of humans by gold amalgamation cold vapour atomic absorption spectrometry

Determination of silver in waters and soil by electrothermal atomic absorption spectrometry after complexation and sorption on carbon

Speciation and preconcentration of trace elements with immobilized algae for atomic absorption spectrophotometric detection

Calibration in flame atomic absorption spectrometry using a single standard and a gradient technique

Cumulative author index

Journal of Analytical Atomic Spectrometry Vol - 9 Issue - 3

Journal of Analytical Atomic Spectrometry Vol - 9 Issue - 2

Journal of Analytical Atomic Spectrometry Vol -8

Journal of Analytical Atomic Spectrometry Vol -7

Journal of Analytical Atomic Spectrometry Vol -6

Journal of Analytical Atomic Spectrometry Vol -5

Journal of Analytical Atomic Spectrometry Vol -4

Journal of Analytical Atomic Spectrometry Vol -2

Determination of total mercury in scalp hair of humans by gold amalgamation cold vapour atomic absorption spectrometry

Content Provider	Royal Society of Chemistry (RSC)
Author	Barrios, Carlos González, Urcesino Bruhn, Carlos G. Salud, Seremi Jaramillo, Victor H. Rodríguez, Aldo A. Becerra, José Reyes, Olga Gras, Nuri T.
Copyright Year	1994
Abstract	Cold vapour atomic absorption spectrometry (CVAAS) with a laboratory-built system using a Au–Pt grid for mercury amalgamation, was applied in the determination of total mercury (Hg-T) in human scalp hair. Two sample dissolution procedures by HNO3 digestion were tested and compared: in a poly(tetrafluoroethylene)(PTFE) bomb for 1.5 h at 110 °C (procedure 1), and in sealed Pyrex ampoules for 24 h at 50 ± 10 °C (procedure 2). After optimization of the aeration gas flow rate (100 ml min–1), de-amalgamation temperature(700 °C) and releasing time (19 s), the analytical methodology was characterized and validated. The linear working range extended from 0.5 to 12.5ng, and the characteristic mass was 0.29 ng of Hg (mass of analyte giving an absorbance of 0.0044). The repeatibility of measurements (within-day variation), expressed as percent relative standard deviation (RSD%) was 5.5% at 1.25 ng of Hg (n=8) and 3.7% at 12.5 ng (n=14), and the mean reproducibility (between-day variation), estimated from calibration curves on different days, was 6.4 ± 1.1%(n=5). The absolute detection limit (3 ×σb) was 0.13 ng of Hg and the limit of quantitation (10 ×σb) was 0.43 ng of Hg (≈ 0.11 mg kg–1 in hair). Analytical precision (8.4 ± 4.0% RSD) and accuracy (4.7 ± 2.5% mean relative error) were satisfactory for ppm and sub-ppm levels of Hg-T in several biological and environmental certified and standard reference materials (CRMs and SRMs) including hair. Procedure 2 was selected as it is much simpler, requires inexpensive reagents and is more amenable for routine application. Mean recovery of Hg-T in hair spiked with Hg standard solutions was 105% in the range 0.83–1.27 mg kg–1. In addition, two human head hair samples were assayed as prospective laboratory control materials. Thus, sub-sample homogeneity, analytical intra-laboratory variability and external quality control were assessed to confirm the methodology in use. Between-day variation in hair analysis for Hg-T conducted on pooled scalp hair over a period of 5 months was 4.8% RSD (1.10 ± 0.053 mg kg–1 for the 95% confidence interval; n=16). Instrumental neutron activation analysis used as an independent method, showed significant correlation in results with CVAAS, both in several biological and environmental SRMs and CRMs and in human hair samples of pregnant and nursing women (Hg concentration range =0.1–6.9 mg kg–1; n=21; r2=0.880, p < 0.0001).
Starting Page	535
Ending Page	541
Page Count	7
File Format	PDF
ISSN	02679477
Volume Number	9
Issue Number	4
Journal	Journal of Analytical Atomic Spectrometry
DOI	10.1039/JA9940900535
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Absorption spectroscopy Mercury-vapor lamp Nitric acid Tetrafluoroethylene Polytetrafluoroethylene Nuclear weapon Pyrex Mathematical optimization Analyte Coefficient of variation Approximation error Confidence interval Neutron activation analysis
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Analytical Chemistry

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Determination of total mercury by single-stage gold amalgamation with cold vapour atomic spectrometric detection

Determination of mercury in concentrated mineral acids by electrothermal atomic absorption spectrometry using gold amalgamation

In-atomizer atom trapping on gold nanoparticles for sensitive determination of mercury by flow injection cold vapor generation atomic absorption spectrometry

Amalgamation performances of gold-coated quartz wool, alumina, silica, sand and carbon fiber for the determination of inorganic mercury in waters by cold vapor atomic absorption spectrometry

Determination of Total Mercury in Human Hair Samples by Cold Vapor Atomic Absorption Spectrometry

Determination of Mercury in Mainstream Cigarette Smoke by Conventional and Amalgamation Cold Vapor Atomic Absorption Spectrometry

Amalgamation performances of gold-coated quartz wool, alumina, silica, sand and carbon fiber for the determination of inorganic mercury in waters by cold vapor atomic absorption spectrometry

The use of surfactants to obtain cadmium atoms at room temperature and its application for the cold vapour AAS determination of the metal

Organic and total mercury determination in sediments by cold vapor atomic absorption spectrometry: methodology validation and uncertainty measurements

Determination of total mercury in scalp hair of humans by gold amalgamation cold vapour atomic absorption spectrometry

Similar Documents

Determination of total mercury by single-stage gold amalgamation with cold vapour atomic spectrometric detection

Determination of mercury in concentrated mineral acids by electrothermal atomic absorption spectrometry using gold amalgamation

In-atomizer atom trapping on gold nanoparticles for sensitive determination of mercury by flow injection cold vapor generation atomic absorption spectrometry

Amalgamation performances of gold-coated quartz wool, alumina, silica, sand and carbon fiber for the determination of inorganic mercury in waters by cold vapor atomic absorption spectrometry

Determination of Total Mercury in Human Hair Samples by Cold Vapor Atomic Absorption Spectrometry

Determination of Mercury in Mainstream Cigarette Smoke by Conventional and Amalgamation Cold Vapor Atomic Absorption Spectrometry

Amalgamation performances of gold-coated quartz wool, alumina, silica, sand and carbon fiber for the determination of inorganic mercury in waters by cold vapor atomic absorption spectrometry

The use of surfactants to obtain cadmium atoms at room temperature and its application for the cold vapour AAS determination of the metal

Organic and total mercury determination in sediments by cold vapor atomic absorption spectrometry: methodology validation and uncertainty measurements

Determination of total mercury in scalp hair of humans by gold amalgamation cold vapour atomic absorption spectrometry