PMID- 28971343 OWN - NLM STAT- MEDLINE DCOM- 20181018 LR - 20181113 IS - 1614-7499 (Electronic) IS - 0944-1344 (Linking) VI - 24 IP - 35 DP - 2017 Dec TI - Investigation of cosolvent application to enhance POPs' mass transfer in partitioning passive sampling in sediment. PG - 27334-27344 LID - 10.1007/s11356-017-0223-8 [doi] AB - The freely dissolved concentration of persistent organic pollutants (POPs) is one of the most important parameters for risk assessment in aquatic environments, due to its proportionality to the chemical activity. Chemical activity difference represents the driving force for a spontaneous contaminant transport, such as water-aquatic biota or water-sediment. Freely dissolved concentrations in sediment pore water can be estimated from the concentrations in a partition-based passive sampler equilibrated in suspensions of contaminated sediment. Equilibration in the sediment/passive sampler system is slow, since concentrations of most POPs in the water phase, which is the main route for mass transfer, are very low. Adding methanol to sediment in suspension increases the POPs' solubility and, consequently, the permeability in the water phase. The resulting higher aqueous concentrations enhance POPs mass transfer up to three times for investigated POPs (polycyclic aromatic hydrocarbons, polychlorinated biphenyls, organochlorine pesticides) and shorten equilibrium attainment to less than 6 weeks. The addition of methanol to the aqueous phase up to a molar fraction of 0.2 changed the POPs equilibrium distribution ratio between sediment and passive sampler by less than a factor of two. As a result, the pore water concentrations of POPs, calculated from their amounts accumulated in a passive sampler, are affected by methanol addition not more than by the same factor. FAU - Belhacova-Minarikova, Michaela AU - Belhacova-Minarikova M AD - Masaryk University, Faculty of Science, Research Centre for Toxic Compounds in the Environment (RECETOX), Kamenice 753/5, 625 00, Brno, Czech Republic. FAU - Rusina, Tatsiana AU - Rusina T AD - Masaryk University, Faculty of Science, Research Centre for Toxic Compounds in the Environment (RECETOX), Kamenice 753/5, 625 00, Brno, Czech Republic. FAU - Smedes, Foppe AU - Smedes F AD - Masaryk University, Faculty of Science, Research Centre for Toxic Compounds in the Environment (RECETOX), Kamenice 753/5, 625 00, Brno, Czech Republic. FAU - Vrana, Branislav AU - Vrana B AUID- ORCID: 0000-0003-4221-5774 AD - Masaryk University, Faculty of Science, Research Centre for Toxic Compounds in the Environment (RECETOX), Kamenice 753/5, 625 00, Brno, Czech Republic. vrana@recetox.muni.cz. LA - eng GR - GACR 15-16512S/Grantova Agentura Ceske Republiky/ GR - LO1214/Ministerstvo Skolstvi, Mladeze a Telovychovy/ PT - Journal Article DEP - 20171002 PL - Germany TA - Environ Sci Pollut Res Int JT - Environmental science and pollution research international JID - 9441769 RN - 0 (Hydrocarbons, Chlorinated) RN - 0 (Pesticides) RN - 0 (Polycyclic Aromatic Hydrocarbons) RN - 0 (Water Pollutants, Chemical) RN - DFC2HB4I0K (Polychlorinated Biphenyls) RN - Y4S76JWI15 (Methanol) SB - IM MH - Environmental Monitoring/*methods MH - Geologic Sediments/*analysis MH - Hydrocarbons, Chlorinated/analysis MH - Methanol/chemistry MH - Pesticides/*analysis MH - Polychlorinated Biphenyls/*analysis MH - Polycyclic Aromatic Hydrocarbons/*analysis MH - Solubility MH - Water Pollutants, Chemical/*analysis OTO - NOTNLM OT - Mass transfer OT - Partitioning OT - Passive sampling OT - Persistent organic pollutants OT - Sediment EDAT- 2017/10/04 06:00 MHDA- 2018/10/20 06:00 CRDT- 2017/10/04 06:00 PHST- 2017/05/31 00:00 [received] PHST- 2017/09/13 00:00 [accepted] PHST- 2017/10/04 06:00 [pubmed] PHST- 2018/10/20 06:00 [medline] PHST- 2017/10/04 06:00 [entrez] AID - 10.1007/s11356-017-0223-8 [pii] AID - 10.1007/s11356-017-0223-8 [doi] PST - ppublish SO - Environ Sci Pollut Res Int. 2017 Dec;24(35):27334-27344. doi: 10.1007/s11356-017-0223-8. Epub 2017 Oct 2.