Jarosite quantification in soils

An enhanced sequential extraction procedure

Chamindra L. Vithana, Leigh A. Sullivan, Richard T. Bush, Edward D. Burton

Research output: Contribution to journalArticle

Abstract

A two-step sequential extraction procedure established for the quantification of acidity producing ferric and ferrous sulfate minerals such as melanterite and jarosite in acid mine wastes was evaluated for quantification of jarosite spiked in soils. The procedure involves in sequence anoxic water extraction, roasting the solid residue after anoxic water extraction at 550. °C for 1. h, and 4. M HCl extraction of the roasted solid. Soil and quartz samples were spiked with known amounts of synthetic and natural jarosite and their recovery was measured using the suggested two-step sequential extraction procedure. The recoveries of synthetic and natural jarosite were calculated on the basis of the S contents of the initially spiked jarosite in soil and quartz samples. Less than 50% of the spiked jarosite was recovered. The missing S is partially attributable to the retention of jarosite by the Teflon filter membrane used during the filtration of the anoxic water extract. Further investigations also demonstrated a lower 4. M HCl-S extractability from jarosite samples roasted at 550. °C than those roasted at 450. °C. S recovery from jarosite-spiked quartz samples increased to 45-70% by replacing the Teflon filter membrane with the Cellulose Acetate filter membrane and including this filter paper in the second step roasting. This modified method is a step forward in the development of methods to accurately and reliably quantify jarosite in soil materials.

Original languageEnglish
Pages (from-to)130-138
Number of pages9
JournalApplied Geochemistry
Volume51
DOIs
Publication statusPublished - 2014
Externally publishedYes

Fingerprint

jarosite
Soils
Quartz
Membranes
Polytetrafluoroethylenes
soil
Recovery
Sulfate minerals
filter
Water
ferrous sulfate
Polytetrafluoroethylene
quartz
membrane
Acidity
Cellulose
sequential extraction
Acids
mine waste
acidity

Cite this

Vithana, Chamindra L. ; Sullivan, Leigh A. ; Bush, Richard T. ; Burton, Edward D. / Jarosite quantification in soils : An enhanced sequential extraction procedure. In: Applied Geochemistry. 2014 ; Vol. 51. pp. 130-138.
@article{e006912b310c4495a47870968af7e7f0,
title = "Jarosite quantification in soils: An enhanced sequential extraction procedure",
abstract = "A two-step sequential extraction procedure established for the quantification of acidity producing ferric and ferrous sulfate minerals such as melanterite and jarosite in acid mine wastes was evaluated for quantification of jarosite spiked in soils. The procedure involves in sequence anoxic water extraction, roasting the solid residue after anoxic water extraction at 550. °C for 1. h, and 4. M HCl extraction of the roasted solid. Soil and quartz samples were spiked with known amounts of synthetic and natural jarosite and their recovery was measured using the suggested two-step sequential extraction procedure. The recoveries of synthetic and natural jarosite were calculated on the basis of the S contents of the initially spiked jarosite in soil and quartz samples. Less than 50{\%} of the spiked jarosite was recovered. The missing S is partially attributable to the retention of jarosite by the Teflon filter membrane used during the filtration of the anoxic water extract. Further investigations also demonstrated a lower 4. M HCl-S extractability from jarosite samples roasted at 550. °C than those roasted at 450. °C. S recovery from jarosite-spiked quartz samples increased to 45-70{\%} by replacing the Teflon filter membrane with the Cellulose Acetate filter membrane and including this filter paper in the second step roasting. This modified method is a step forward in the development of methods to accurately and reliably quantify jarosite in soil materials.",
author = "Vithana, {Chamindra L.} and Sullivan, {Leigh A.} and Bush, {Richard T.} and Burton, {Edward D.}",
year = "2014",
doi = "10.1016/j.apgeochem.2014.10.006",
language = "English",
volume = "51",
pages = "130--138",
journal = "Applied Geochemistry",
issn = "0883-2927",
publisher = "Elsevier Limited",

}

Jarosite quantification in soils : An enhanced sequential extraction procedure. / Vithana, Chamindra L.; Sullivan, Leigh A.; Bush, Richard T.; Burton, Edward D.

In: Applied Geochemistry, Vol. 51, 2014, p. 130-138.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Jarosite quantification in soils

T2 - An enhanced sequential extraction procedure

AU - Vithana, Chamindra L.

AU - Sullivan, Leigh A.

AU - Bush, Richard T.

AU - Burton, Edward D.

PY - 2014

Y1 - 2014

N2 - A two-step sequential extraction procedure established for the quantification of acidity producing ferric and ferrous sulfate minerals such as melanterite and jarosite in acid mine wastes was evaluated for quantification of jarosite spiked in soils. The procedure involves in sequence anoxic water extraction, roasting the solid residue after anoxic water extraction at 550. °C for 1. h, and 4. M HCl extraction of the roasted solid. Soil and quartz samples were spiked with known amounts of synthetic and natural jarosite and their recovery was measured using the suggested two-step sequential extraction procedure. The recoveries of synthetic and natural jarosite were calculated on the basis of the S contents of the initially spiked jarosite in soil and quartz samples. Less than 50% of the spiked jarosite was recovered. The missing S is partially attributable to the retention of jarosite by the Teflon filter membrane used during the filtration of the anoxic water extract. Further investigations also demonstrated a lower 4. M HCl-S extractability from jarosite samples roasted at 550. °C than those roasted at 450. °C. S recovery from jarosite-spiked quartz samples increased to 45-70% by replacing the Teflon filter membrane with the Cellulose Acetate filter membrane and including this filter paper in the second step roasting. This modified method is a step forward in the development of methods to accurately and reliably quantify jarosite in soil materials.

AB - A two-step sequential extraction procedure established for the quantification of acidity producing ferric and ferrous sulfate minerals such as melanterite and jarosite in acid mine wastes was evaluated for quantification of jarosite spiked in soils. The procedure involves in sequence anoxic water extraction, roasting the solid residue after anoxic water extraction at 550. °C for 1. h, and 4. M HCl extraction of the roasted solid. Soil and quartz samples were spiked with known amounts of synthetic and natural jarosite and their recovery was measured using the suggested two-step sequential extraction procedure. The recoveries of synthetic and natural jarosite were calculated on the basis of the S contents of the initially spiked jarosite in soil and quartz samples. Less than 50% of the spiked jarosite was recovered. The missing S is partially attributable to the retention of jarosite by the Teflon filter membrane used during the filtration of the anoxic water extract. Further investigations also demonstrated a lower 4. M HCl-S extractability from jarosite samples roasted at 550. °C than those roasted at 450. °C. S recovery from jarosite-spiked quartz samples increased to 45-70% by replacing the Teflon filter membrane with the Cellulose Acetate filter membrane and including this filter paper in the second step roasting. This modified method is a step forward in the development of methods to accurately and reliably quantify jarosite in soil materials.

UR - http://www.scopus.com/inward/record.url?scp=84908575879&partnerID=8YFLogxK

U2 - 10.1016/j.apgeochem.2014.10.006

DO - 10.1016/j.apgeochem.2014.10.006

M3 - Article

VL - 51

SP - 130

EP - 138

JO - Applied Geochemistry

JF - Applied Geochemistry

SN - 0883-2927

ER -