Selectivity assessment of an arsenic sequential extraction procedure for evaluating mobility in mine wastes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10286036" target="_blank" >RIV/00216208:11310/14:10286036 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.aca.2014.06.022" target="_blank" >http://dx.doi.org/10.1016/j.aca.2014.06.022</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.aca.2014.06.022" target="_blank" >10.1016/j.aca.2014.06.022</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Selectivity assessment of an arsenic sequential extraction procedure for evaluating mobility in mine wastes

Popis výsledku v původním jazyce

An optimized sequential extraction (SE) scheme for mine waste materials has been developed and tested for As partitioning over a range of pure As-bearing mineral phases, their model mixtures, and natural mine waste materials. This optimized SE procedureemploys five extraction steps: (1) nitrogen-purged deionized water, 10 h; (2) 0.01 M NH4H2PO4,16 h; (3) 0.2 M NH4-oxalatein the dark, pH3, 2 h; (4) 0.2 M NH4-oxalate, pH3/80 degrees C, 4 h; (5) KClO3/HCl/HNO3 digestion. Selectivity and specificity testson natural mine wastes and major pure As-bearing mineral phases showed that these As fractions appear to be primarily associated with: (1) readily soluble; (2) adsorbed; (3) amorphous and poorly-crystalline arsenates, oxides and hydroxosulfates of Fe; (4) well-crystalline arsenates, oxides, and hydroxosulfates of Fe; as well as (5) sulfides and arsenides. The specificity and selectivity of extractants, and the reproducibility of the optimized SE procedure were further verified by artific

Název v anglickém jazyce

Selectivity assessment of an arsenic sequential extraction procedure for evaluating mobility in mine wastes

Popis výsledku anglicky

An optimized sequential extraction (SE) scheme for mine waste materials has been developed and tested for As partitioning over a range of pure As-bearing mineral phases, their model mixtures, and natural mine waste materials. This optimized SE procedureemploys five extraction steps: (1) nitrogen-purged deionized water, 10 h; (2) 0.01 M NH4H2PO4,16 h; (3) 0.2 M NH4-oxalatein the dark, pH3, 2 h; (4) 0.2 M NH4-oxalate, pH3/80 degrees C, 4 h; (5) KClO3/HCl/HNO3 digestion. Selectivity and specificity testson natural mine wastes and major pure As-bearing mineral phases showed that these As fractions appear to be primarily associated with: (1) readily soluble; (2) adsorbed; (3) amorphous and poorly-crystalline arsenates, oxides and hydroxosulfates of Fe; (4) well-crystalline arsenates, oxides, and hydroxosulfates of Fe; as well as (5) sulfides and arsenides. The specificity and selectivity of extractants, and the reproducibility of the optimized SE procedure were further verified by artific

Druh

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

CEP obor

DD - Geochemie

OECD FORD obor

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Projekt

<a href="/cs/project/GC13-01706J" target="_blank" >GC13-01706J: Speciace arzenu v důlních odpadech ? příklady systémů bohatých sulfoarzeničnany trojmocného železa</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Analytica Chimica Acta

ISSN

0003-2670

e-ISSN

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Svazek periodika

839

Číslo periodika v rámci svazku

AUGUST

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

34-43

Kód UT WoS článku

000339992000005

EID výsledku v databázi Scopus

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