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Zhan F, Shunthirasingham C, Li Y, Oh J, Lei YD, Ben Chaaben A, Dalpé Castilloux A, Lu Z, Lee K, Gobas FA, Alexandrou N, Hung H, Wania F. Sources and environmental fate of halomethoxybenzenes. SCIENCE ADVANCES 2023; 9:eadi8082. [PMID: 37824609 PMCID: PMC10569719 DOI: 10.1126/sciadv.adi8082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Accepted: 09/07/2023] [Indexed: 10/14/2023]
Abstract
Halomethoxybenzenes are pervasive in the atmosphere at concentration levels that exceed, often by an order of magnitude, those of the persistent organic pollutants with which they share the attributes of persistence and potential for long-range transport, bioaccumulation, and toxic effects. Long ignored by environmental chemists because of their predominantly natural origin-namely, synthesis by terrestrial wood-rotting fungi, marine algae, and invertebrates-knowledge of their environmental pathways remains limited. Through measuring the spatial and seasonal variability of four halomethoxybenzenes in air and precipitation and performing complementary environmental fate simulations, we present evidence that these compounds undergo continental-scale transport in the atmosphere, which they enter largely by evaporation from water. This also applies to halomethoxybenzenes originating in terrestrial environments, such as drosophilin A methyl ether, which reach aquatic environments with runoff, possibly in the form of their phenolic precursors. Our findings contribute substantially to the comprehension of sources and fate of halomethoxybenzenes, illuminating their widespread atmospheric dispersal.
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Affiliation(s)
- Faqiang Zhan
- Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, ON M1C 1A4, Canada
| | | | - Yuening Li
- Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, ON M1C 1A4, Canada
| | - Jenny Oh
- Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, ON M1C 1A4, Canada
| | - Ying Duan Lei
- Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, ON M1C 1A4, Canada
| | - Amina Ben Chaaben
- Institut des Sciences de la Mer de Rimouski, Université du Québec à Rimouski, Rimouski, QC G5L 3A1, Canada
| | - Abigaëlle Dalpé Castilloux
- Institut des Sciences de la Mer de Rimouski, Université du Québec à Rimouski, Rimouski, QC G5L 3A1, Canada
| | - Zhe Lu
- Institut des Sciences de la Mer de Rimouski, Université du Québec à Rimouski, Rimouski, QC G5L 3A1, Canada
| | - Kelsey Lee
- School of Resource and Environmental Management, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - Frank A. P. C. Gobas
- School of Resource and Environmental Management, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - Nick Alexandrou
- Air Quality Processes Research Section, Environment and Climate Change Canada, Toronto, ON M3H 5T4, Canada
| | - Hayley Hung
- Air Quality Processes Research Section, Environment and Climate Change Canada, Toronto, ON M3H 5T4, Canada
| | - Frank Wania
- Department of Physical and Environmental Sciences, University of Toronto Scarborough, Toronto, ON M1C 1A4, Canada
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Zhang Q, Hou X, Wei L, Kong W, Luo Y, Ren Z, Sun Z, Liu J, Jiang G. Bromophenol Induced Multiple Stress Responses in Rice Plants: Impact of Doses and Congener Structures. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:16885-16894. [PMID: 36426421 DOI: 10.1021/acs.est.2c05731] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Bromophenols (BPs) have both natural and artificial sources in the environment and are frequently detected in plants. Herein, the ubiquitous 2,4,6-TriBP was hydroponically exposed to rice seedlings at two concentrations (0.2 and 2.0 mg/L) to characterize the dose-dependent abiotic stress responses of rice plants to BPs. The 2,4,6-TriBP induced oxidative damage to rice roots and subsequently inhibited plant transpiration and growth at the end of exposure in both concentrations. Moreover, the gene expression of OsUGT72B1 and the activity of glycosyltransferases of exposed rice roots were 2.36-to-4.41-fold and 1.23-to-1.72-fold higher than that of the blank controls after 24 h, following the formation of glycoconjugates in response to 2,4,6-TriBP exposure. It was notable that the glycosylation rates also showed a dose-effect relationship in rice roots. One and six glycoconjugates of 2,4,6-TriBP were detected in 0.2 and 2.0 mg/L exposure groups, respectively. Considering the detected species of glycoconjugates for four other types of BPs, the numbers of bromine atoms were found to dramatically affect their glycosylation process in rice plants. These results improve our fundamental understanding of the impact of congener structures and exposure concentrations of organic contaminants on the glycosylation process in response to phytotoxicity.
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Affiliation(s)
- Qing Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Environment, Beijing Normal University, Beijing 100875, China
| | - Xingwang Hou
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310000, China
| | - Linfeng Wei
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310000, China
| | - Wenqian Kong
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310000, China
| | - Yadan Luo
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310000, China
| | - Zhihua Ren
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310000, China
| | - Zhendong Sun
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310000, China
| | - Jiyan Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310000, China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310000, China
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3
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Zhang X, Robson M, Jobst K, Pena-Abaurrea M, Muscalu A, Chaudhuri S, Marvin C, Brindle ID, Reiner EJ, Helm P. Halogenated organic contaminants of concern in urban-influenced waters of Lake Ontario, Canada: Passive sampling with targeted and non-targeted screening. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 264:114733. [PMID: 32417577 DOI: 10.1016/j.envpol.2020.114733] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 05/01/2020] [Accepted: 05/02/2020] [Indexed: 06/11/2023]
Abstract
Passive samplers are useful tools for monitoring hydrophobic, persistent, and potentially bioaccumulative contaminants in the environment. In this study, low density polyethylene passive samplers were deployed in urban-influenced and background nearshore freshwaters of northwestern Lake Ontario and analyzed for a broad range of both legacy halogenated organic contaminants (HOCs) and halogenated flame retardants (HFRs). Non-targeted analysis was conducted for screening additional halogenated substances. For most compounds, concentrations were greatest in the industrialized Hamilton Harbour and more generally at sites that have stronger influences of wastewater effluent discharges and stormwater run-off through rivers and creeks. Polychlorinated biphenyls (PCBs) remain the dominant class of HOCs in water, with dissolved-phase concentrations ranging from 10 to 4100 pg/L (ΣPCBs), followed by polybrominated diphenylethers (ΣPBDEs; 14-960 pg/L) and the organochlorine pesticides (OCPs; 22-290 pg/L). Several non-PBDE brominated flame retardants (nBFRs) and chlorinated Dechlorane-related compounds were detected, with hexabromocyclododecanes (ΣHBCDD; sum of 3 diastereoisomers) the most abundant (1.0-21 pg/L). Non-targeted screening of samples by high resolution mass spectrometry using Kendrick mass defect plots for data analysis indicated that several other halogenated compounds were present in waters at relatively high abundances compared to the flame retardants, based on semi-quantitative estimates. These included methyl-triclosan, four halogenated anisoles (2,4,6-tribromoanisole, dimethyl-trichloroanisole, pentachloroanisole, and pentachlorothioanisole), and pentachloro-aniline. Dissolved-phase methyl-triclosan was estimated to contribute up to approximately 40% of the summed target HOC concentrations. Polyethylene passive samplers provided an excellent medium for both non-targeted screening of HOCs not currently included in monitoring programs and tracking brominated and chlorinated chemicals slated for reductions in uses and emissions through international (Stockholm Convention) and binational (Great Lakes) agreements.
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Affiliation(s)
- Xianming Zhang
- Ontario Ministry of the Environment, Conservations and Parks, Toronto, Ontario, M9P 3V6, Canada.
| | - Matthew Robson
- Ontario Ministry of the Environment, Conservations and Parks, Toronto, Ontario, M9P 3V6, Canada; Department of Chemistry, Brock University, St. Catharines, Ontario, L2S 3A1, Canada
| | - Karl Jobst
- Ontario Ministry of the Environment, Conservations and Parks, Toronto, Ontario, M9P 3V6, Canada
| | - Miren Pena-Abaurrea
- Ontario Ministry of the Environment, Conservations and Parks, Toronto, Ontario, M9P 3V6, Canada; Department of Chemistry, University of Toronto, Toronto, Ontario, M5S 3H6, Canada
| | - Alina Muscalu
- Ontario Ministry of the Environment, Conservations and Parks, Toronto, Ontario, M9P 3V6, Canada
| | - Sri Chaudhuri
- Ontario Ministry of the Environment, Conservations and Parks, Toronto, Ontario, M9P 3V6, Canada
| | - Chris Marvin
- Environment and Climate Change Canada, Burlington, Ontario, L7S 1A1, Canada
| | - Ian D Brindle
- Department of Chemistry, Brock University, St. Catharines, Ontario, L2S 3A1, Canada
| | - Eric J Reiner
- Ontario Ministry of the Environment, Conservations and Parks, Toronto, Ontario, M9P 3V6, Canada; Department of Chemistry, University of Toronto, Toronto, Ontario, M5S 3H6, Canada
| | - Paul Helm
- Ontario Ministry of the Environment, Conservations and Parks, Toronto, Ontario, M9P 3V6, Canada; School for the Environment, University of Toronto, Toronto, Ontario, M5S 3E8, Canada
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Zhang Q, Kong W, Wei L, Wang Y, Luo Y, Wang P, Liu J, Schnoor JL, Jiang G. Uptake, phytovolatilization, and interconversion of 2,4-dibromophenol and 2,4-dibromoanisole in rice plants. ENVIRONMENT INTERNATIONAL 2020; 142:105888. [PMID: 32593840 PMCID: PMC7670850 DOI: 10.1016/j.envint.2020.105888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 04/26/2020] [Accepted: 06/10/2020] [Indexed: 05/27/2023]
Abstract
The structural analogs, 2,4-dibromophenol (2,4-DBP) and 2,4-dibromoanisole (2,4-DBA), have both natural and artificial sources and are frequently detected in environmental matrices. Their environmental fates, especially volatilization, including both direct volatilization from cultivation solution and phytovolatilization through rice plants were evaluated using hydroponic exposure experiments. Results showed that 2,4-DBA displayed stronger volatilization tendency and more bioaccumulation in aboveground rice tissues. Total volatilized 2,4-DBA accounted for 4.74% of its initial mass and was 3.43 times greater than 2,4-DBP. Phytovolatilization of 2,4-DBA and 2,4-DBP contributed to 6.78% and 41.7% of their total volatilization, enhancing the emission of these two contaminants from hydroponic solution into atmosphere. In this study, the interconversion processes between 2,4-DBP and 2,4-DBA were first characterized in rice plants. The demethylation ratio of 2,4-DBA was 12.0%, 32.0 times higher than methylation of 2,4-DBP. Formation of corresponding metabolites through methylation and demethylation processes also contributed to the volatilization of 2,4-DBP and 2,4-DBA from hydroponic solution into the air phase. Methylation and demethylation processes increased phytovolatilization by 12.1% and 36.9% for 2,4-DBP and 2,4-DBA. Results indicate that phytovolatilization and interconversion processes in rice plants serve as important pathways for the global cycles of bromophenols and bromoanisoles.
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Affiliation(s)
- Qing Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China
| | - Wenqian Kong
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Linfeng Wei
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yingjun Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yadan Luo
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pu Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China
| | - Jiyan Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Jerald L Schnoor
- Department of Civil and Environmental Engineering, University of Iowa, Iowa City, IA 52242, United States
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; School of Environment, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
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Bidleman TF, Andersson A, Haglund P, Tysklind M. Will Climate Change Influence Production and Environmental Pathways of Halogenated Natural Products? ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:6468-6485. [PMID: 32364720 DOI: 10.1021/acs.est.9b07709] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Thousands of halogenated natural products (HNPs) pervade the terrestrial and marine environment. HNPs are generated by biotic and abiotic processes and range in complexity from low molecular mass natural halocarbons (nHCs, mostly halomethanes and haloethanes) to compounds of higher molecular mass which often contain oxygen and/or nitrogen atoms in addition to halogens (hHNPs). nHCs have a key role in regulating tropospheric and stratospheric ozone, while some hHNPs bioaccumulate and have toxic properties similar those of anthropogenic-persistent organic pollutants (POPs). Both chemical classes have common sources: biosynthesis by marine bacteria, phytoplankton, macroalgae, and some invertebrate animals, and both may be similarly impacted by alteration of production and transport pathways in a changing climate. The nHCs scientific community is advanced in investigating sources, atmospheric and oceanic transport, and forecasting climate change impacts through modeling. By contrast, these activities are nascent or nonexistent for hHNPs. The goals of this paper are to (1) review production, sources, distribution, and transport pathways of nHCs and hHNPs through water and air, pointing out areas of commonality, (2) by analogy to nHCs, argue that climate change may alter these factors for hHNPs, and (3) suggest steps to improve linkage between nHCs and hHNPs science to better understand and predict climate change impacts.
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Affiliation(s)
- Terry F Bidleman
- Department of Chemistry, Umeå University (UmU), SE-901 87 Umeå, Sweden
| | - Agneta Andersson
- Department of Ecology & Environmental Science, UmU, SE-901 87 Umeå, Sweden
- Umeå Marine Sciences Centre, UmU, SE-905 71 Hörnefors, Sweden
| | - Peter Haglund
- Department of Chemistry, Umeå University (UmU), SE-901 87 Umeå, Sweden
| | - Mats Tysklind
- Department of Chemistry, Umeå University (UmU), SE-901 87 Umeå, Sweden
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Bidleman TF, Brorström-Lundén E, Hansson K, Laudon H, Nygren O, Tysklind M. Atmospheric Transport and Deposition of Bromoanisoles Along a Temperate to Arctic Gradient. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:10974-10982. [PMID: 28885011 DOI: 10.1021/acs.est.7b03218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Bromoanisoles (BAs) arise from O-methylation of bromophenols, produced by marine algae and invertebrates. BAs undergo sea-air exchange and are transported over the oceans. Here we report 2,4-DiBA and 2,4,6-TriBA in air and deposition on the Swedish west coast (Råö) and the interior of arctic Finland (Pallas). Results are discussed in perspective with previous measurements in the northern Baltic region in 2011-2013. BAs in air decreased from south to north in the order Råö > northern Baltic > Pallas. Geometric mean concentrations at Pallas increased significantly (p < 0.05) between 2002 and 2015 for 2,4-DiBA but not for 2,4,6-TriBA. The logarithm of BA partial pressures correlated significantly to reciprocal air temperature at the coastal station Råö and over the Baltic, but only weakly (2,4-DiBA) or not significantly (2,4,6-TriBA) at inland Pallas. Deposition fluxes of BAs were similar at both sites despite lower air concentrations at Pallas, due to greater precipitation scavenging at lower temperatures. Proportions of the two BAs in air and deposition were related to Henry's law partitioning and source regions. Precipitation concentrations were 10-40% of those in surface water of Bothnian Bay, northern Baltic Sea. BAs deposited in the bay catchment likely enter rivers and provide an unexpected source to northern estuaries. BAs may be precursors to higher molecular weight compounds identified by others in Swedish inland lakes.
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Affiliation(s)
- Terry F Bidleman
- Department of Chemistry, Umeå University , SE-901 87 Umeå, Sweden
| | - Eva Brorström-Lundén
- Swedish Environmental Research Institute (IVL) , Aschebergsgatan 44, SE-411 33 Gothenburg, Sweden
| | - Katarina Hansson
- Swedish Environmental Research Institute (IVL) , Aschebergsgatan 44, SE-411 33 Gothenburg, Sweden
| | - Hjalmar Laudon
- Department of Forest Ecology and Management, Swedish University of Agricultural Sciences (SLU) , SE-901 83 Umeå, Sweden
| | - Olle Nygren
- Building Office, Umeå University , SE-901 87 Umeå, Sweden
| | - Mats Tysklind
- Department of Chemistry, Umeå University , SE-901 87 Umeå, Sweden
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Bidleman TF, Laudon H, Nygren O, Svanberg S, Tysklind M. Chlorinated pesticides and natural brominated anisoles in air at three northern Baltic stations. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 225:381-389. [PMID: 28336095 DOI: 10.1016/j.envpol.2017.02.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 01/23/2017] [Accepted: 02/28/2017] [Indexed: 06/06/2023]
Abstract
Polyurethane foam (PUF) disk passive samplers were deployed at one inland and two island locations in the Bothnian Bay region of the northern Baltic Sea. Uptake was linear over 81-147 d and a temperature range of -2.6 to 14.2 °C for organochlorine pesticides (OCPs) and current-use pesticides (CUPs) having log KOA ≥9 at ambient temperatures. Partial saturation of the PUF disks occurred for the more volatile OCPs hexachlorocyclohexanes (HCHs) and hexachlorobenzene (HCB), and for bromoanisoles (BAs), which are products of bromophenols released by natural and anthropogenic sources. Correction for nonlinear uptake of these was made using experimentally measured PUF-air partition coefficients. Passive-derived air concentrations of pesticides were uniform over the bay and agreed within a factor of 2 or better with levels determined by active (pumped) sampling at one of the island stations. Levels of OCPs were similar to those reported at background sites in the European and Canadian Arctic and at monitoring stations in the central Baltic and southern Scandinavia, indicating long-range transport. The insecticide chlorpyrifos was 10 times lower at bay stations than in the Canadian Arctic. Insight to sources and processes was gained by examining compound profiles. Fractions Falpha = α-HCH/(α-HCH + γ-HCH) and FTC = trans-chlordane/(trans-chlordane + cis-chlordane) at bay stations were higher than in the Norwegian and Finnish Arctic and similar to those at the southern monitoring stations. Volatilization of chlordanes from Baltic seawater may also modify FTC. Higher FTriBA = 2,4,6-TriBA/(2,4,6-TriBA + 2,4-DiBA) distinguished local volatilization from the Baltic Sea versus lower FTriBA found at the inland site and reported in air on the Norwegian coast, suggesting westerly transport from the Atlantic across Norway and Sweden.
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Affiliation(s)
| | - Hjalmar Laudon
- Department of Forest Ecology and Management, Swedish University of Agricultural Science (SLU), SE-901 83 Umeå, Sweden
| | - Olle Nygren
- Building Office, Umeå University, SE-901 87 Umeå, Sweden
| | | | - Mats Tysklind
- Dept. of Chemistry, Umeå University, SE-901 87 Umeå, Sweden
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8
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Bidleman TF, Agosta K, Andersson A, Haglund P, Liljelind P, Hegmans A, Jantunen LM, Nygren O, Poole J, Ripszam M, Tysklind M. Sea-air exchange of bromoanisoles and methoxylated bromodiphenyl ethers in the Northern Baltic. MARINE POLLUTION BULLETIN 2016; 112:58-64. [PMID: 27575397 DOI: 10.1016/j.marpolbul.2016.08.042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2016] [Revised: 08/11/2016] [Accepted: 08/18/2016] [Indexed: 06/06/2023]
Abstract
Halogenated natural products in biota of the Baltic Sea include bromoanisoles (BAs) and methoxylated bromodiphenyl ethers (MeO-BDEs). We identified biogenic 6-MeO-BDE47 and 2'-MeO-BDE68 in Baltic water and air for the first time using gas chromatography - high resolution mass spectrometry. Partial pressures in air were related to temperature by: log p/Pa=m/T(K)+b. We determined Henry's law constants (HLCs) of 2,4-dibromoanisole (2,4-DiBA) and 2,4,6-tribromoanisole (2,4,6-TriBA) from 5 to 30°C and revised our assessment of gas exchange in the northern Baltic. The new water/air fugacity ratios (FRs) were lower, but still indicated net volatilization in May-June for 2,4-DiBA and May - September for 2,4,6-TriBA. The net flux (negative) of BAs from Bothnian Bay (38,000km2) between May - September was revised from -1319 to -532kg. FRs of MeO-BDEs were >1, suggesting volatilization, although this is tentative due to uncertainties in their HLCs and binding to dissolved organic carbon.
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Affiliation(s)
- Terry F Bidleman
- Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden.
| | - Kathleen Agosta
- Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden
| | - Agneta Andersson
- Department of Ecology and Environmental Science, Umeå University, SE-901 87 Umeå, Sweden
| | - Peter Haglund
- Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden
| | - Per Liljelind
- Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden
| | - Alyse Hegmans
- Department of Environmental Science, Royal Roads University, Victoria, BC, V9B 5Y2, Canada
| | - Liisa M Jantunen
- Air Quality Processes Research Section, Environment and Climate Change Canada, 6248 Eighth Line, Egbert, ON L0L 1N0, Canada
| | - Olle Nygren
- Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden
| | - Justen Poole
- Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Matyas Ripszam
- Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden
| | - Mats Tysklind
- Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden
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9
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Bidleman TF, Nygren O, Tysklind M. Field estimates of polyurethane foam - air partition coefficients for hexachlorobenzene, alpha-hexachlorocyclohexane and bromoanisoles. CHEMOSPHERE 2016; 159:126-131. [PMID: 27285381 DOI: 10.1016/j.chemosphere.2016.05.040] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 05/10/2016] [Accepted: 05/12/2016] [Indexed: 06/06/2023]
Abstract
Partition coefficients of gaseous semivolatile organic compounds (SVOCs) between polyurethane foam (PUF) and air (KPA) are needed in the estimation of sampling rates for PUF disk passive air samplers. We determined KPA in field experiments by conducting long-term (24-48 h) air sampling to saturate PUF traps and shorter runs (2-4 h) to measure air concentrations. Sampling events were done at daily mean temperatures ranging from 1.9 to 17.5 °C. Target compounds were hexachlorobenzene (HCB), alpha-hexachlorocyclohexane (α-HCH), 2,4-dibromoanisole (2,4-DiBA) and 2,4,6-tribromoanisole (2,4,6-TriBA). KPA (mL g(-1)) was calculated from quantities on the PUF traps at saturation (ng g(-1)) divided by air concentrations (ng mL(-1)). Enthalpies of PUF-to-air transfer (ΔHPA, kJ mol(-1)) were determined from the slopes of log KPA/mL g(-1) versus 1/T(K) for HCB and the bromoanisoles, KPA of α-HCH was measured only at 14.3 to 17.5 °C and ΔHPA was not determined. Experimental log KPA/mL g(-1) at 15 °C were HCB = 7.37; α-HCH = 8.08; 2,4-DiBA = 7.26 and 2,4,6-TriBA = 7.26. Experimental log KPA/mL g(-1) were compared with predictions based on an octanol-air partition coefficient (log KOA) model (Shoeib and Harner, 2002a) and a polyparameter linear free relationship (pp-LFER) model (Kamprad and Goss, 2007) using different sets of solute parameters. Predicted KP values varied by factors of 3 to over 30, depending on the compound and the model. Such discrepancies provide incentive for experimental measurements of KPA for other SVOCs.
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Affiliation(s)
- Terry F Bidleman
- Department of Chemistry, Umeå University, Umeå, SE-901 87, Sweden.
| | - Olle Nygren
- Department of Chemistry, Umeå University, Umeå, SE-901 87, Sweden
| | - Mats Tysklind
- Department of Chemistry, Umeå University, Umeå, SE-901 87, Sweden
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10
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Bidleman T, Agosta K, Andersson A, Brorström-Lundén E, Haglund P, Hansson K, Laudon H, Newton S, Nygren O, Ripszam M, Tysklind M, Wiberg K. Atmospheric pathways of chlorinated pesticides and natural bromoanisoles in the northern Baltic Sea and its catchment. AMBIO 2015; 44 Suppl 3:472-83. [PMID: 26022329 PMCID: PMC4447703 DOI: 10.1007/s13280-015-0666-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Long-range atmospheric transport is a major pathway for delivering persistent organic pollutants to the oceans. Atmospheric deposition and volatilization of chlorinated pesticides and algae-produced bromoanisoles (BAs) were estimated for Bothnian Bay, northern Baltic Sea, based on air and water concentrations measured in 2011-2012. Pesticide fluxes were estimated using monthly air and water temperatures and assuming 4 months ice cover when no exchange occurs. Fluxes were predicted to increase by about 50 % under a 2069-2099 prediction scenario of higher temperatures and no ice. Total atmospheric loadings to Bothnian Bay and its catchment were derived from air-sea gas exchange and "bulk" (precipitation + dry particle) deposition, resulting in net gains of 53 and 46 kg year(-1) for endosulfans and hexachlorocyclohexanes, respectively, and net loss of 10 kg year(-1) for chlordanes. Volatilization of BAs releases bromine to the atmosphere and may limit their residence time in Bothnian Bay. This initial study provides baseline information for future investigations of climate change on biogeochemical cycles in the northern Baltic Sea and its catchment.
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Affiliation(s)
- Terry Bidleman
- />Department of Chemistry, Umeå University, Linnaeus väg 6, 901 87 Umeå, Sweden
| | - Kathleen Agosta
- />Department of Chemistry, Umeå University, Linnaeus väg 6, 901 87 Umeå, Sweden
| | - Agneta Andersson
- />Department of Ecology and Environmental Science, Umeå University, Linnaeus väg 6, 901 87 Umeå, Sweden
| | - Eva Brorström-Lundén
- />IVL Swedish Environmental Research Institute, P.O. Box 530 21, 40014 Göteborg, Sweden
| | - Peter Haglund
- />Department of Chemistry, Umeå University, Linnaeus väg 6, 901 87 Umeå, Sweden
| | - Katarina Hansson
- />IVL Swedish Environmental Research Institute, P.O. Box 530 21, 40014 Göteborg, Sweden
| | - Hjalmar Laudon
- />Swedish University of Agricultural Sciences (SLU), 901 83 Umeå, Sweden
| | - Seth Newton
- />Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University, Svante Arrhenius väg 8, 106 91 Stockholm, Sweden
| | - Olle Nygren
- />Department of Chemistry, Umeå University, Linnaeus väg 6, 901 87 Umeå, Sweden
| | - Matyas Ripszam
- />Department of Chemistry, Umeå University, Linnaeus väg 6, 901 87 Umeå, Sweden
| | - Mats Tysklind
- />Department of Chemistry, Umeå University, Linnaeus väg 6, 901 87 Umeå, Sweden
| | - Karin Wiberg
- />Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU), P.O. Box 7050, 750 07 Uppsala, Sweden
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Ripszam M, Gallampois CMJ, Berglund Å, Larsson H, Andersson A, Tysklind M, Haglund P. Effects of predicted climatic changes on distribution of organic contaminants in brackish water mesocosms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2015; 517:10-21. [PMID: 25710621 DOI: 10.1016/j.scitotenv.2015.02.051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Revised: 02/10/2015] [Accepted: 02/13/2015] [Indexed: 06/04/2023]
Abstract
Predicted consequences of future climate change in the northern Baltic Sea include increases in sea surface temperatures and terrestrial dissolved organic carbon (DOC) runoff. These changes are expected to alter environmental distribution of anthropogenic organic contaminants (OCs). To assess likely shifts in their distributions, outdoor mesocosms were employed to mimic pelagic ecosystems at two temperatures and two DOC concentrations, current: 15°C and 4 mg DOCL(-1) and, within ranges of predicted increases, 18°C and 6 mg DOCL(-1), respectively. Selected organic contaminants were added to the mesocosms to monitor changes in their distribution induced by the treatments. OC partitioning to particulate matter and sedimentation were enhanced at the higher DOC concentration, at both temperatures, while higher losses and lower partitioning of OCs to DOC were observed at the higher temperature. No combined effects of higher temperature and DOC on partitioning were observed, possibly because of the balancing nature of these processes. Therefore, changes in OCs' fates may largely depend on whether they are most sensitive to temperature or DOC concentration rises. Bromoanilines, phenanthrene, biphenyl and naphthalene were sensitive to the rise in DOC concentration, whereas organophosphates, chlorobenzenes (PCBz) and polychlorinated biphenyls (PCBs) were more sensitive to temperature. Mitotane and diflufenican were sensitive to both temperature and DOC concentration rises individually, but not in combination.
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Affiliation(s)
- M Ripszam
- Department of Chemistry, Umea University, 901 87 Umeå, Sweden.
| | | | - Å Berglund
- Department of Ecology and Environmental Sciences, Umeå University, 901 87 Umeå, Sweden
| | - H Larsson
- Umeå Marine Sciences Centre, Umeå University, Norrbyn, 905 71 Hörnefors, Sweden
| | - A Andersson
- Department of Ecology and Environmental Sciences, Umeå University, 901 87 Umeå, Sweden
| | - M Tysklind
- Department of Chemistry, Umea University, 901 87 Umeå, Sweden
| | - P Haglund
- Department of Chemistry, Umea University, 901 87 Umeå, Sweden
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