Determination of Gold in e-Waste Dust Samples and Geological Matrices by ICP-MS after Extraction by an HClO4-HBr-HI-Aqua Regia Mixture

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F16%3A10328920" target="_blank" >RIV/00216208:11310/16:10328920 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1111/j.1751-908X.2015.00368.x" target="_blank" >http://dx.doi.org/10.1111/j.1751-908X.2015.00368.x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/j.1751-908X.2015.00368.x" target="_blank" >10.1111/j.1751-908X.2015.00368.x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Determination of Gold in e-Waste Dust Samples and Geological Matrices by ICP-MS after Extraction by an HClO4-HBr-HI-Aqua Regia Mixture

Popis výsledku v původním jazyce

This study describes two methods (Procedures-1 and -2) for the direct extraction of Au by an inorganic acid mixture (HClO4-HBr-HI-aqua regia) from complex sample matrices. Standard PTFE jars at 200 degrees C were used to decompose test portions of 0.5-1 g, with subsequent precise and accurate analysis by ICP-MS without any other preconcentration or separation. Procedure-1 decomposed samples effectively without the necessity of leaching with HF and was developed for dust samples from e-waste (electronic waste) processing; however, testing on geological reference materials showed very good results. The analyses of replicate decompositions (n = 5) from both procedures yielded very good precision (< 5% RSD) for most of the reference materials. The accuracy achieved was better than +/- 10%, with the exception of NIST SRM 2782 data from Procedure-1. Two unknown samples of dust from e-waste processing (P-1 and VM-1) exhibited elevated concentrations of Au (21.31-61.64 mu g g(-1)) with precision better than 10% (n = 5). The proposed techniques are simple, sensitive and sparing in the use of chemicals, and are designed for a variety of e-waste dust samples. No significant influences were observed for the predicted spectral interferences on mass Au-197.

Název v anglickém jazyce

Determination of Gold in e-Waste Dust Samples and Geological Matrices by ICP-MS after Extraction by an HClO4-HBr-HI-Aqua Regia Mixture

Popis výsledku anglicky

This study describes two methods (Procedures-1 and -2) for the direct extraction of Au by an inorganic acid mixture (HClO4-HBr-HI-aqua regia) from complex sample matrices. Standard PTFE jars at 200 degrees C were used to decompose test portions of 0.5-1 g, with subsequent precise and accurate analysis by ICP-MS without any other preconcentration or separation. Procedure-1 decomposed samples effectively without the necessity of leaching with HF and was developed for dust samples from e-waste (electronic waste) processing; however, testing on geological reference materials showed very good results. The analyses of replicate decompositions (n = 5) from both procedures yielded very good precision (< 5% RSD) for most of the reference materials. The accuracy achieved was better than +/- 10%, with the exception of NIST SRM 2782 data from Procedure-1. Two unknown samples of dust from e-waste processing (P-1 and VM-1) exhibited elevated concentrations of Au (21.31-61.64 mu g g(-1)) with precision better than 10% (n = 5). The proposed techniques are simple, sensitive and sparing in the use of chemicals, and are designed for a variety of e-waste dust samples. No significant influences were observed for the predicted spectral interferences on mass Au-197.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DD - Geochemie

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Geostandards and Geoanalytical Research

ISSN

1639-4488

e-ISSN

—

Svazek periodika

40

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

257-266

Kód UT WoS článku

000384746500008

EID výsledku v databázi Scopus

2-s2.0-84973450379