TITLE

Preservation procedures for arsenic speciation in a stream affected by acid mine drainage in southwestern Spain

AUTHOR(S)
Sánchez-Rodas, Daniel; Oliveira, Vanesa; Sarmiento, Aguasanta M.; Gómez-Ariza, José Luis; Nieto, José Miguel
PUB. DATE
April 2006
SOURCE
Analytical & Bioanalytical Chemistry;Apr2006, Vol. 384 Issue 7/8, p1594
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A preservation study has been performed for arsenic speciation in surface freshwaters affected by acid mine drainage (AMD), a pollution source characterized by low pH and high metallic content. Two sample preservation procedures described in the literature were attempted using opaque glass containers and refrigeration: i) addition of 0.25 mol L−1 EDTA to the samples, which maintained the stability of the arsenic species for 3 h; and ii) in situ sample clean-up with a cationic exchange resin, in order to reduce the metallic load, which resulted in a partial co-adsorption of arsenic onto Fe precipitates. A new proposed method was also tried: sample acidification with 6 mol L−1 HCl followed by in situ clean-up with a cationic exchange resin, which allowed a longer preservation time of at least 48 h. The proposed method was successfully applied to water samples with high arsenic content, taken from the Aguas Agrias Stream (Odiel River Basin, SW Spain), which is severely affected by AMD that originates at the nearby polymetallic sulfide mine of Tharsis. The speciation results obtained by liquid chromatography–hydride generation–atomic fluorescence spectrometry (HPLC-HG-AFS) indicated that during the summer the main arsenic species was As(V) at the hundred μg L−1 level, followed by DMA (dimethyl arsenic) and As(III) below the ten μg L−1 level. In winter, As(V) and As(III) increased at least fivefold, whereas the DMA was not detected.
ACCESSION #
20330002

 

Related Articles

  • Survival Time of Ceriodaphnia dubia in Acid Waters with Metal Contamination. Ribeiro, R.; Lopes, I.; Pereira, A. M. M.; Gonçalves, F.; Soares, A. M. V. M. // Bulletin of Environmental Contamination & Toxicology;Jan2000, Vol. 64 Issue 1, p130 

    This article presents information related to survival time of Ceriodaphnia dubia in acid waters with metal contamination. Many regions are impacted by severe acidification resulting from acid precipitation, acid mine drainage, or natural sources of acidification. Serious ecotoxicological...

  • New Products.  // Laboratory Equipment;Sep2002, Vol. 39 Issue 5, p32 

    Features products and supplies available and used by laboratories in the U.S. Zero grade air generators from Parker Hannifin Corp.; Glass vials from Environmental Sampling Supply; Compact refrigerated circulator from Julabo USA; Gas standards generator from KIN-Tek Laboratories Inc.

  • Quantification of Heavy Metals from A.M.D. Discharged into a Public Water Supply Dam in the Iberian Pyrite Belt (SW Spain) Using Centered Moving Average. Grande, Jose Antonio; Jiménez, Antonio; Romero, Sixto; de la Torre, María; Gómez-Olivera, Tamara // Water, Air & Soil Pollution;Oct2010, Vol. 212 Issue 1-4, p299 

    In this work, the determination of moving averages is proposed as a method for quantifying metal, arsenic, and sulfate discharges into a water course undergoing acid mine drainage processes which flows into a public water supply dam in the Iberian Pyrite Belt. The analysis of the results...

  • Chironomidae larvae as bioindicators of an acid mine drainage in Portugal. De Bisthoven, L.; Gerhardt, A.; Soares, A. // Hydrobiologia;Dec2004, Vol. 532 Issue 1-3, p181 

    The abandoned São Domingos mine in South Portugal discharges acid metal pollution in the drainage system. A dynamic pH- and metal-gradient (pH 3.3-6.8) modulated by rainfall at the confluence of a tributary with the acid mine drainage (AMD)-channel, and a small reservoir contaminated with...

  • Geochemical behavior of arsenic in reducing sulfidic sediments of reservoir contaminated by acid mine drainage. Zhang, C.; Wu, P.; Tang, C.; Xie, H.; Zeng, Z.; Yang, S. // Environmental Earth Sciences;May2014, Vol. 71 Issue 10, p4341 

    The sediment from an acid mine drainage affected reservoir of Guizhou province of China has the iron and arsenic concentration of about 400 and 2.6 g/kg, respectively. Sediment cores were collected, and were used to study the arsenic behavior in the seriously acidified reservoir from the...

  • The First Demonstration of an Optical Refrigerator. Mills, G. L.; Turner-Valle, J. A.; Buchwald, M. I. // AIP Conference Proceedings;2004, Vol. 710 Issue 1, p1845 

    Optical cooling using anti-Stokes fluorescence in solids and liquids appears to have several advantages over more conventional techniques. It has been the topic of recent analysis and experimental work by numerous organizations. Isolated samples of Yb:ZBLAN glass are reported to have been cooled...

  • In situ removal of arsenic from groundwater by using permeable reactive barriers of organic matter/limestone/zero-valent iron mixtures. Gibert, O.; de Pablo, J.; Cortina, J.-L.; Ayora, C. // Environmental Geochemistry & Health;Aug2010, Vol. 32 Issue 4, p373 

    In this study, two mixtures of municipal compost, limestone and, optionally, zero-valent iron were assessed in two column experiments on acid mine treatment. The effluent solution was systematically analysed throughout the experiment and precipitates from both columns were withdrawn for scanning...

  • Microbial Growth and the Effects of Mild Acidification and Preservatives in Refrigerated Sweet Potato Puree. Pérez-Díaz, Ilenys M.; Van-Den Truong; Webber, Ashlee; McFeeters, Roger F. // Journal of Food Protection;Mar2008, Vol. 71 Issue 3, p639 

    Refrigerated sweet potato puree is a convenient form of sweet potato that can be used as an ingredient in formulated foods. The microbiology of refrigerated sweet potato puree during storage for up to 5 weeks was evaluated. Because the puree was made by comminuting steam-cooked sweet potatoes...

  • Abandoned Mine Drainage in the Swatara Creek Basin, Southern Anthracite Coalfield, Pennsylvania, USA: 1. Stream Water Quality Trends Coinciding with the Return of Fish. Cravotta III, Charles; Brightbill, Robin; Langland, Michael // Mine Water & the Environment;Sep2010, Vol. 29 Issue 3, p176 

    idic mine drainage (AMD) from legacy anthracite mines has contaminated Swatara Creek in eastern Pennsylvania. Intermittently collected base-flow data for 1959–1986 indicate that fish were absent immediately downstream from the mined area where pH ranged from 3.5 to 7.2 and concentrations...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics