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Contamination of River Kymijoki sediments with polychlorinated dibenzo-p-dioxins, dibenzofurans and mercury and their transport to the Gulf of Finland in the Baltic Sea.
Chemosphere. 2008 Nov; 73(10):1675-83.C

Abstract

Kymijoki, the fourth largest river in Finland, has been heavily polluted by pulp mill effluents as well as the chemical industry. Up to 24,000 ton of wood preservative, chlorophenol known as Ky-5, was manufactured in the upper reaches of the river, an unknown amount of which was discharged into the river between 1940 and 1984. Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) occurred as impurities in the final Ky-5 product. The PCDD/F concentrations and burden in the river sediments were studied and the transport of PCDD/Fs from contaminated sites downstream and into the Gulf of Finland in the Baltic Sea was estimated. More than 190 sediment cores were sampled to estimate the volume of contaminated sediments and the total PCDD/F burden. The transport of PCDD/Fs was estimated using sediment traps placed at several sites. The survey revealed that sediments in the river were heavily polluted by PCDD/Fs, the main toxic congener being 1,2,3,4,6,7,8-heptachlorodibenzofuran, a major contaminant in the Ky-5 product. The mean total concentration at the most polluted river site downstream from the main source was 42000 microg kg(-1) d.w. (106 microg I-TEQ kg(-1)). The elevated concentrations in the coastal region and the present estimated transport from the River Kymijoki confirm earlier assessments that the river is a major source of PCDD/F for the Gulf of Finland.

Authors+Show Affiliations

Finnish Environment Institute, Helsinki, Finland. simo.salo@ymparisto.fiNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18805566

Citation

Salo, Simo, et al. "Contamination of River Kymijoki Sediments With Polychlorinated Dibenzo-p-dioxins, Dibenzofurans and Mercury and Their Transport to the Gulf of Finland in the Baltic Sea." Chemosphere, vol. 73, no. 10, 2008, pp. 1675-83.
Salo S, Verta M, Malve O, et al. Contamination of River Kymijoki sediments with polychlorinated dibenzo-p-dioxins, dibenzofurans and mercury and their transport to the Gulf of Finland in the Baltic Sea. Chemosphere. 2008;73(10):1675-83.
Salo, S., Verta, M., Malve, O., Korhonen, M., Lehtoranta, J., Kiviranta, H., Isosaari, P., Ruokojärvi, P., Koistinen, J., & Vartiainen, T. (2008). Contamination of River Kymijoki sediments with polychlorinated dibenzo-p-dioxins, dibenzofurans and mercury and their transport to the Gulf of Finland in the Baltic Sea. Chemosphere, 73(10), 1675-83. https://doi.org/10.1016/j.chemosphere.2008.07.085
Salo S, et al. Contamination of River Kymijoki Sediments With Polychlorinated Dibenzo-p-dioxins, Dibenzofurans and Mercury and Their Transport to the Gulf of Finland in the Baltic Sea. Chemosphere. 2008;73(10):1675-83. PubMed PMID: 18805566.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Contamination of River Kymijoki sediments with polychlorinated dibenzo-p-dioxins, dibenzofurans and mercury and their transport to the Gulf of Finland in the Baltic Sea. AU - Salo,Simo, AU - Verta,Matti, AU - Malve,Olli, AU - Korhonen,Markku, AU - Lehtoranta,Jouni, AU - Kiviranta,Hannu, AU - Isosaari,Pirjo, AU - Ruokojärvi,Päivi, AU - Koistinen,Jaana, AU - Vartiainen,Terttu, Y1 - 2008/09/20/ PY - 2008/02/01/received PY - 2008/06/16/revised PY - 2008/07/24/accepted PY - 2008/9/23/pubmed PY - 2009/1/27/medline PY - 2008/9/23/entrez SP - 1675 EP - 83 JF - Chemosphere JO - Chemosphere VL - 73 IS - 10 N2 - Kymijoki, the fourth largest river in Finland, has been heavily polluted by pulp mill effluents as well as the chemical industry. Up to 24,000 ton of wood preservative, chlorophenol known as Ky-5, was manufactured in the upper reaches of the river, an unknown amount of which was discharged into the river between 1940 and 1984. Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) occurred as impurities in the final Ky-5 product. The PCDD/F concentrations and burden in the river sediments were studied and the transport of PCDD/Fs from contaminated sites downstream and into the Gulf of Finland in the Baltic Sea was estimated. More than 190 sediment cores were sampled to estimate the volume of contaminated sediments and the total PCDD/F burden. The transport of PCDD/Fs was estimated using sediment traps placed at several sites. The survey revealed that sediments in the river were heavily polluted by PCDD/Fs, the main toxic congener being 1,2,3,4,6,7,8-heptachlorodibenzofuran, a major contaminant in the Ky-5 product. The mean total concentration at the most polluted river site downstream from the main source was 42000 microg kg(-1) d.w. (106 microg I-TEQ kg(-1)). The elevated concentrations in the coastal region and the present estimated transport from the River Kymijoki confirm earlier assessments that the river is a major source of PCDD/F for the Gulf of Finland. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/18805566/Contamination_of_River_Kymijoki_sediments_with_polychlorinated_dibenzo_p_dioxins_dibenzofurans_and_mercury_and_their_transport_to_the_Gulf_of_Finland_in_the_Baltic_Sea_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(08)00986-7 DB - PRIME DP - Unbound Medicine ER -