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Kuznetsova OV. Current trends and challenges in the analysis of marine environmental contaminants by isotope ratio mass spectrometry. Anal Bioanal Chem 2024; 416:71-85. [PMID: 37979060 DOI: 10.1007/s00216-023-05029-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 10/26/2023] [Accepted: 10/30/2023] [Indexed: 11/19/2023]
Abstract
An increasing number of organic and inorganic pollutants are being detected in the marine environment, posing a severe threat to the ecosystem and human health, even in trace concentrations. Isotope ratio mass spectrometry (IRMS) is one of the critical methods for determining the origin and fate of environmental pollutants and characterising their transformation processes. It has been used for a relatively long time for ecological monitoring of some well-studied industrial hydrocarbons at contaminated sites. However, the method still faces many analytical challenges. This review provides a comprehensive overview of recent technical advances concerning IRMS analysis of various contaminants and discusses typical pitfalls encountered in marine environment analysis. Particular attention is given to the study of sampling techniques and sample preparation for examination, often the keys to successful research given the complexity of marine matrices and the diverse and numerous nature of contaminants. Prospects for developing IRMS to monitor pollution sources and pollutant transformation in the marine environment are outlined.
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Affiliation(s)
- Olga V Kuznetsova
- Vernadsky Institute of Geochemistry and Analytical Chemistry, Kosygin St. 19, 119991, Moscow, Russian Federation.
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2
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Nomaki H, Chen C, Oda K, Tsuchiya M, Tame A, Uematsu K, Isobe N. Abundant Chitinous Structures in Chilostomella (Foraminifera, Rhizaria) and Their Potential Functions. J Eukaryot Microbiol 2021; 68:e12828. [PMID: 33128276 PMCID: PMC7894498 DOI: 10.1111/jeu.12828] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 08/28/2020] [Accepted: 10/20/2020] [Indexed: 12/01/2022]
Abstract
Benthic foraminifera, members of Rhizaria, inhabit a broad range of marine environments and are particularly common in hypoxic sediments. The biology of benthic foraminifera is key to understanding benthic ecosystems and relevant biogeochemical cycles, especially in hypoxic environments. Chilostomella is a foraminiferal genus commonly found in hypoxic deep-sea sediments and has poorly understood ecological characteristics. For example, the carbon isotopic compositions of their lipids are substantially different from other co-occurring genera, probably reflecting unique features of its metabolism. Here, we investigated the cytoplasmic and ultrastructural features of Chilostomella ovoidea from bathyal sediments of Sagami Bay, Japan, based on serial semi-thin sections examined using an optical microscope followed by a three-dimensional reconstruction, combined with TEM observations of ultra-thin sections. Observations by TEM revealed the presence of abundant electron-dense structures dividing the cytoplasm. Based on histochemical staining, these structures are shown to be composed of chitin. Our 3D reconstruction revealed chitinous structures in the final seven chambers. These exhibited a plate-like morphology in the final chambers but became rolled up in earlier chambers (toward the proloculus). These chitinous, plate-like structures may function to partition the cytoplasm in a chamber to increase the surface/volume ratio and/or act as a reactive site for some metabolic functions.
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Affiliation(s)
- Hidetaka Nomaki
- SUGAR, X‐starJapan Agency for Marine‐Earth Science and Technology (JAMSTEC)2‐15 Natsushima‐choYokosukaKanagawa237‐0061Japan
| | - Chong Chen
- SUGAR, X‐starJapan Agency for Marine‐Earth Science and Technology (JAMSTEC)2‐15 Natsushima‐choYokosukaKanagawa237‐0061Japan
| | - Kaya Oda
- SUGAR, X‐starJapan Agency for Marine‐Earth Science and Technology (JAMSTEC)2‐15 Natsushima‐choYokosukaKanagawa237‐0061Japan
| | - Masashi Tsuchiya
- Research Institute for Global Change (RIGC)Japan Agency for Marine‐Earth Science and Technology (JAMSTEC)YokosukaKanagawa
237‐0061Japan
| | - Akihiro Tame
- Marine Works Japan Ltd.3‐54‐1 Oppamahigashi‐choYokosukaKanagawa237‐0063Japan
| | - Katsuyuki Uematsu
- Marine Works Japan Ltd.3‐54‐1 Oppamahigashi‐choYokosukaKanagawa237‐0063Japan
| | - Noriyuki Isobe
- Research Institute for Marine Resources Utilization (MRU)Japan Agency for Marine‐Earth Science and Technology (JAMSTEC)YokosukaKanagawa237‐0061Japan
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Hoondert RPJ, van den Brink NW, van den Heuvel-Greve MJ, Ragas AJ, Jan Hendriks A. Implications of Trophic Variability for Modeling Biomagnification of POPs in Marine Food Webs in the Svalbard Archipelago. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:4026-4035. [PMID: 32129610 PMCID: PMC7144221 DOI: 10.1021/acs.est.9b06666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 02/12/2020] [Accepted: 03/04/2020] [Indexed: 05/24/2023]
Abstract
The occurrence of persistent organic pollutants (POPs) in the Arctic has been of constant concern, as these chemicals cause reproductive effects and mortality in organisms. The Arctic acts as a chemical sink, which makes this system an interesting case for bioaccumulation studies. However, as conducting empirical studies for all Arctic species and POPs individually is unfeasible, in silico methods have been developed. Existing bioaccumulation models are predominately validated for temperate food chains, and do not account for a large variation in trophic levels. This study applies Monte Carlo simulations to account for variability in trophic ecology on Svalbard when predicting bioaccumulation of POPs using the optimal modeling for ecotoxicological applications (OMEGA) bioaccumulation model. Trophic magnification factors (TMFs) were calculated accordingly. Comparing our model results with monitored POP residues in biota revealed that, on average, all predictions fell within a factor 6 of the monitored POP residues in biota. Trophic variability did not affect model performance tremendously, with up to a 25% variability in performance metrics. To our knowledge, we were the first to include trophic variability in predicting biomagnification in Arctic ecosystems using a mechanistic biomagnification model. However, considerable amounts of data are required to quantify the implications of trophic variability on biomagnification of POPs in Arctic food webs.
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Affiliation(s)
- Renske P. J. Hoondert
- Department
of Environmental Science, Institute for Wetland
and Water Research, Faculty of Science, Radboud University, P.O. Box 9010, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
| | - Nico W. van den Brink
- Division
of Toxicology, Wageningen University, Box 8000, 6700 EA Wageningen, The Netherlands
| | | | - AdM. J. Ragas
- Department
of Environmental Science, Institute for Wetland
and Water Research, Faculty of Science, Radboud University, P.O. Box 9010, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
- Faculty
of Management, Science and Technology, Open
University, P.O. Box 2960, 6401 DL Heerlen, The Netherlands
| | - A. Jan Hendriks
- Department
of Environmental Science, Institute for Wetland
and Water Research, Faculty of Science, Radboud University, P.O. Box 9010, Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
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Broadley HJ, Cottingham KL, Baer NA, Weathers KC, Ewing HA, Chaves-Ulloa R, Chickering J, Wilson AM, Shrestha J, Chen CY. Factors affecting MeHg bioaccumulation in stream biota: the role of dissolved organic carbon and diet. ECOTOXICOLOGY (LONDON, ENGLAND) 2019; 28:949-963. [PMID: 31410744 PMCID: PMC6814552 DOI: 10.1007/s10646-019-02086-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/22/2019] [Indexed: 05/15/2023]
Abstract
The bioaccumulation of the neurotoxin methylmercury (MeHg) in freshwater ecosystems is thought to be mediated by both water chemistry (e.g., dissolved organic carbon [DOC] and dissolved mercury [Hg]) and diet (e.g., trophic position and diet composition). Hg in small streams is of particular interest given their role as a link between terrestrial and aquatic processes. Terrestrial processes determine the quantity and quality of streamwater DOC, which in turn influence the quantity and bioavailability of dissolved MeHg. To better understand the effects of water chemistry and diet on Hg bioaccumulation in stream biota, we measured DOC and dissolved Hg in stream water and mercury concentration in three benthic invertebrate taxa and three fish species across up to 12 tributary streams in a forested watershed in New Hampshire, USA. As expected, dissolved total mercury (THg) and MeHg concentrations increased linearly with DOC. However, mercury concentrations in fish and invertebrates varied non-linearly, with maximum bioaccumulation at intermediate DOC concentrations, which suggests that MeHg bioavailability may be reduced at high levels of DOC. Further, MeHg and THg concentrations in invertebrates and fish, respectively, increased with δ15N (suggesting trophic position) but were not associated with δ13C. These results show that even though MeHg in water is strongly determined by DOC concentrations, mercury bioaccumulation in stream food webs is the result of both MeHg availability in stream water and trophic position.
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Affiliation(s)
- Hannah J Broadley
- Department of Environmental Conservation, University of Massachusetts, Amherst, MA, 01003, USA.
- Department of Biological Sciences, Dartmouth College, Hanover, NH, 03755, USA.
- Environmental Studies Program, Bates College, Lewiston, ME, 04240, USA.
| | | | - Nicholas A Baer
- Department of Natural and Environmental Sciences, Colby-Sawyer College, New London, NH, 03257, USA
| | | | - Holly A Ewing
- Environmental Studies Program, Bates College, Lewiston, ME, 04240, USA
| | - Ramsa Chaves-Ulloa
- Department of Biological Sciences, Dartmouth College, Hanover, NH, 03755, USA
- Department of General Education, Western Governors University, Salt Lake City, UT, USA
| | - Jessica Chickering
- Department of Natural and Environmental Sciences, Colby-Sawyer College, New London, NH, 03257, USA
| | - Adam M Wilson
- Department of Natural and Environmental Sciences, Colby-Sawyer College, New London, NH, 03257, USA
| | - Jenisha Shrestha
- Department of Natural and Environmental Sciences, Colby-Sawyer College, New London, NH, 03257, USA
| | - Celia Y Chen
- Department of Biological Sciences, Dartmouth College, Hanover, NH, 03755, USA
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