The labile metal concentrations in Sava River water assessed by diffusive gradients in thin films

Dragun, Zrinka; Raspor, Biserka; Roje, Vibor (2008) The labile metal concentrations in Sava River water assessed by diffusive gradients in thin films. Chemical Speciation and Bioavailability, 20 (1). pp. 33-46. ISSN 0954-2299

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Abstract

DGT devices (diffusive gradients in thin films) were introduced as a new tool for the assessment of the labile metal concentrations in the surface water of Sava River in Croatia. DGT deployments were carried out at five locations, and lasted for 13-36 days. Performance evaluation in two seasons (autumn 2005 and spring 2006) revealed that reliable measurements can be achieved in the autumn period even after long-term DGT deployments, while in the spring period reproducibility was seriously affected by resin contamination with algae and particles. In the autumn period, the highest DGT-labile concentrations were measured for Fe, Mn and Zn (13.7 25.4  g L-1, 8.24 10.6  g L-1, and 1.86 0.85  g L-1, respectively), the intermediate for Ni and Cu (0.232 0.021  g L-1 and 0.166 0.062  g L-1, respectively), and the lowest for Cr, Co, Pb and Cd (0.033 0.018  g L-1, 0.022 0.009  g L-1, 0.020 0.008  g L-1 and 0.0016 0.0009  g L-1, respectively). Increased concentrations of several metals, namely Co, Cr, Mn and Fe, were found at the location downstream of the municipal sewage outlet, pointing out to detrimental effect of the point source of pollution on surface water quality. Nevertheless, DGT-labile metal concentrations in the selected section of Sava River were mostly comparable with the concentrations previously reported for unpolluted rivers.

Item Type:	Article
Uncontrolled Keywords:	diffusive gradients in thin films; metals; labile concentration; Sava River; water
Subjects:	NATURAL SCIENCES > Chemistry > Analytic Chemistry NATURAL SCIENCES > Chemistry > Inorganic Chemistry NATURAL SCIENCES > Interdisciplinary Natural Sciences > Environmental Science
Divisions:	Division for Marine and Enviromental Research
Projects:	Project title Project leader Project code Project type Stanične promjene u vodnih organizama pobuđene metalima [40333] Biserka Raspor 098-0982934-2721 MZOS Biogeokemija metala u sedimentacijskim sustavima i tlima Hrvatske [85574] Goran Kniewald 098-0982934-2715 MZOS SAva RIver Basin : Sustainable Use, Managment and Protection of Resources - SARIB Biserka Raspor 509160 FP6
Depositing User:	Zrinka Dragun
Date Deposited:	18 May 2015 10:31
URI:	http://fulir.irb.hr/id/eprint/1892
DOI:	10.3184/095422908X299164

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