Natural decrease of dissolved arsenic in a small stream receiving drainages of abandoned silver mines in Guanajuato, Mexico | Health & Environmental Research Online (HERO)

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Citation
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HERO ID

1936024

Reference Type

Journal Article

Title

Natural decrease of dissolved arsenic in a small stream receiving drainages of abandoned silver mines in Guanajuato, Mexico

Author(s)

Ramos Arroyo, YR; Serafín Muñoz, AH; Yanez Barrientos, E; Rodriguez Huerta, I; Wrobel, K; Wrobel, K

Year

2013

Is Peer Reviewed?

Yes

Journal

Bulletin of Environmental Contamination and Toxicology
ISSN: 0007-4861
EISSN: 1432-0800

Volume

Issue

Page Numbers

539-544

Language

English

PMID

23995851

DOI

10.1007/s00128-013-1091-7

Web of Science Id

WOS:000325701700010

Abstract

Arsenic release from the abandoned mines and its fate in a local stream were studied. Physicochemical parameters, metals/metalloids and arsenic species were determined. One of the mine drainages was found as a point source of contamination with 309 μg L(-1) of dissolved arsenic; this concentration declined rapidly to 10.5 μg L(-1) about 2 km downstream. Data analysis confirmed that oxidation of As(III) released from the primary sulfide minerals was favored by the increase of pH and oxidation reduction potential; the results obtained in multivariate approach indicated that self-purification of water was due to association of As(V) with secondary solid phase containing Fe, Mn, Ca.

Keywords

Mine drainage; Arsenic; Natural attenuation of dissolved arsenic; Multivariate analysis

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