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Kim Y, Lee Y, Lee CE, Jeong H, Ra K, Choi D, Hong S. Compound- and element-specific accumulation characteristics of persistent toxic substances and metals in sediments of the Yellow Sea. JOURNAL OF HAZARDOUS MATERIALS 2024; 476:134926. [PMID: 38909470 DOI: 10.1016/j.jhazmat.2024.134926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Revised: 05/01/2024] [Accepted: 06/13/2024] [Indexed: 06/25/2024]
Abstract
This study investigated the large-scale distributions of persistent toxic substances (PTSs) and heavy metals in sediments of the Yellow Sea, collected from six transects between latitudes 32 and 37 degrees north (n = 35). Elevated concentrations of polychlorinated biphenyls (PCBs) were detected near the mainland, with a predominance of low-chlorinated congeners (di to tetra, ∼60%), indicative of atmospheric deposition. Analysis of traditional and emerging polycyclic aromatic hydrocarbons (t-PAHs and e-PAHs) revealed notable enrichment in the Central Yellow Sea Mud Zone (CYSM), attributing fossil fuel combustion as the significant source. Styrene oligomers and alkylphenols exhibited notable accumulation near the Han River Estuary in South Korea and the Yangtze River Estuary in China, respectively. The accumulation of heavy metals was predominantly observed in the CYSM, with element-specific distribution patterns. Cluster analysis revealed distinct distribution patterns for PTSs and metals, highlighting their source-dependent and grain size-dependent behaviors. In addition, the distribution and accumulation of PTSs tended to depend on their partitioning coefficients, such as the octanol-air partition coefficient (log KOA) and octanol-water partition coefficient (log KOW). This study offers valuable insights into the sources, transport, and fate of hazardous substances in the Yellow Sea, emphasizing the necessity for targeted environmental management strategies.
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Affiliation(s)
- Youngnam Kim
- Department of Earth, Environmental & Space Sciences, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Yeonjung Lee
- Ocean Climate Response & Ecosystem Research Department, Korea Institute of Ocean Science and Technology, Busan 49111, Republic of Korea
| | - Chang-Eon Lee
- Marine Environment Research Department, Korea Institute of Ocean Science and Technology, Busan 49111, Republic of Korea; Department of Marine Environmental Sciences, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Hyeryeong Jeong
- Marine Environment Research Department, Korea Institute of Ocean Science and Technology, Busan 49111, Republic of Korea; Ifremer, CCEM-Unité Contamination Chimique des Ecosystèmes Marins (CCEM), F-44300, Nantes, France
| | - Kongtae Ra
- Marine Environment Research Department, Korea Institute of Ocean Science and Technology, Busan 49111, Republic of Korea
| | - Donghan Choi
- Ocean Climate Response & Ecosystem Research Department, Korea Institute of Ocean Science and Technology, Busan 49111, Republic of Korea
| | - Seongjin Hong
- Department of Earth, Environmental & Space Sciences, Chungnam National University, Daejeon 34134, Republic of Korea; Department of Marine Environmental Sciences, Chungnam National University, Daejeon 34134, Republic of Korea.
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Hassaan MA, Ragab S, Sikaily AE, Nemr AE. Sources of hydrocarbons and their risk assessment in seawater and sediment samples collected from the Nile Delta coast of the Mediterranean Sea. Sci Rep 2024; 14:5082. [PMID: 38429376 PMCID: PMC10907701 DOI: 10.1038/s41598-024-55339-4] [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: 07/13/2023] [Accepted: 02/22/2024] [Indexed: 03/03/2024] Open
Abstract
The aim of this work is to examine the levels, distribution, bases, and hazards of n-alkanes (n-C9 to n-C20) and PAHs in the seawater and sediments around oil production locations in the whole delta region. The variations in the levels of PAHs and n-alkanes in seawater and sediment of the Nile delta coast of the Mediterranean were investigated using GC-MS/MS. The Σn-alkanes residues ranged between 12.05 and 93.51 mg/L (mean: 50.45 ± 17.49 mg/L) and 4.70 to 84.03 µg/g (mean: 31.02 ± 27.995 µg/g) in seawater and sediments, respectively. Total PAHs concentrations ranged between 4.485 and 16.337 μg/L (average: 9.47 ± 3.69 μg/L) and 1.32 to 28.38 ng/g (average 8.61 ± 7.57 ng/g) in seawater and sediment samples, respectively. The CPI (carbon preference index) values fluctuated between 0.62 and 1.72 (seawater) and from 0.234 to 2.175 (sediment), proposing the variation sources of n-alkane in the studied area. PAHs concentrations were lower than the Effective Range Low (ERL) and Effective Range Median (ERM) levels. The Toxic Equivalent Quotient (TEQ) values oscillated between 0.002 and 6.84 ng/L and from 3.72 to 13.48 ng/g for the seawater and sediment samples, respectively. The Ant/(Ant + Phe) ratio in sediment and seawater samples indicated a pyrolytic source while the BaA/(BaA + Chry) ratio indicates petrogenic sources in most of the studied stations.
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Affiliation(s)
- Mohamed A Hassaan
- Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, P.O. 21556, Elanfoushy, Alexandria, Egypt
| | - Safaa Ragab
- Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, P.O. 21556, Elanfoushy, Alexandria, Egypt
| | - Amany El Sikaily
- Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, P.O. 21556, Elanfoushy, Alexandria, Egypt
| | - Ahmed El Nemr
- Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, P.O. 21556, Elanfoushy, Alexandria, Egypt.
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Kim Y, Hong S, Jun L, Lee Y, Kim M, Yim UH, Khim JS, Shin KH. Use of molecular composition and compound-specific isotope analysis for source appointment of PAHs in sediments of a highly industrialized area. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 337:122546. [PMID: 37709122 DOI: 10.1016/j.envpol.2023.122546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/05/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023]
Abstract
This study utilized both conventional molecular analysis and compound-specific isotopic techniques to identify the sources of polycyclic aromatic hydrocarbons (PAHs) in sediments of Ulsan Bay, South Korea. The concentrations of 15 traditional and 11 emerging PAHs were determined in sediments from 21 source sites and 26 bay sites. The concentrations and compositions of traditional and emerging PAHs varied significantly, even at sites close to the source areas. The results obtained from diagnostic ratios and the positive matrix factorization model for source identification were inconsistent in adjacent source areas. The δ13C profiles of PAHs, such as phenanthrene (Phe), fluoranthene (Fl), pyrene (Py), and benz[a]anthracene (BaA) in the sediments showed distinct features depending on the surrounding sources. In urban sediments, lighter δ13CPhe values were observed (mean: -25.1‰), whereas relatively heavier values of δ13CPy were found in petroleum industry areas (mean: -23.4‰). The Bayesian isotope mixing model indicates that the predominant source of PAHs in Ulsan Bay sediments was the petroleum industry (45%), followed by the non-ferrous metals industry (30%), automobile industry (18%), and urban areas (6.3%). These results demonstrated the utility of stable isotopes in assessing the sources and contributions of PAHs in small-scale regions. However, there are still limitations in compound-specific isotope analysis of PAHs, including insufficient end-members for each source, difficulty in analysis, and the influence of non-point sources; thus, further study is needed to expand its application.
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Affiliation(s)
- Youngnam Kim
- Department of Marine Environmental Science, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Seongjin Hong
- Department of Marine Environmental Science, Chungnam National University, Daejeon, 34134, Republic of Korea.
| | - Lincheon Jun
- Department of Marine Sciences & Convergence Engineering, Hanyang University, Ansan, 15588, Republic of Korea
| | - Yeonjung Lee
- Ocean Climate Response & Ecosystem Research Department, Korea Institute of Ocean Science and Technology, Busan, 49111, Republic of Korea
| | - Mungi Kim
- Department of Marine Environmental Science, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Un Hyuk Yim
- Ecological Risk Research Department, Korea Institute of Ocean Science and Technology, Geoje, 53201, Republic of Korea
| | - Jong Seong Khim
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul, 08826, Republic of Korea
| | - Kyung-Hoon Shin
- Department of Marine Sciences & Convergence Engineering, Hanyang University, Ansan, 15588, Republic of Korea
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Said TO, Ragab S, El Sikaily A, Hassaan MA, El Nemr A. Distribution, composition and risk assessment of hydrocarbon residue in surficial sediments of El-Dakhla, El-Kharga and El-Farafra oases, Egypt. Sci Rep 2023; 13:18871. [PMID: 37914771 PMCID: PMC10620400 DOI: 10.1038/s41598-023-46133-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 10/27/2023] [Indexed: 11/03/2023] Open
Abstract
This work examined the polycyclic aromatic hydrocarbons (PAHs) and n-alkanes quantities, sources, and hazards in sediments collected from the Egyptian Western Desert Oases namely: Dakhla, Kharga and Farafra oases. The n-alkane (C9-C20) residue concentrations have ranged from 0.66 to 2417.91 µg/g recorded for the three Oases. On the other hand, the total n-alkane ranged from 448.54 µg/g to 8442.60 µg/g. Higher carbon preference index (CPI) values (> 1.0) proposed that the natural sources could be the main contributor to n-alkanes in the Oases sediment. GC-MS/MS (selected reaction monitoring (SRM) method) was used for the determination of the ΣPAHs concentrations in the studied sediments. The ΣPAHs concentrations (ng/g, dry weight) in the studied three Oases varied from 10.18 to 790.14, 10.55 to 667.72, and from 38.27 to 362.77 for the Kharga, Dakhla and Farafra Oases, respectively. The higher molecular weight PAHs were the most abundant compounds in the collected samples. Assessing potential ecological and human health issues highlighted serious dangers for living things and people. All the investigated PAHs had cancer risk values between 1.43 × 10-4 and 1.64 × 10-1, this finding suggests that PAHs in the samples under study pose a moderate risk of cancer. The main sources of PAHs in this study are biomass, natural gas, and gasoline/diesel burning emissions.
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Affiliation(s)
- Tarek O Said
- Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, El-Anfoushy, Alexandria, Egypt
| | - Safaa Ragab
- Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, El-Anfoushy, Alexandria, Egypt
| | - Amany El Sikaily
- Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, El-Anfoushy, Alexandria, Egypt
| | - Mohamed A Hassaan
- Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, El-Anfoushy, Alexandria, Egypt
| | - Ahmed El Nemr
- Environment Division, National Institute of Oceanography and Fisheries (NIOF), Kayet Bey, El-Anfoushy, Alexandria, Egypt.
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Lee J, Kim Y, Cha J, Kim D, Jang K, Kim JH, Nam SI, Hong S. Distributions and potential sources of polychlorinated biphenyls and polycyclic aromatic hydrocarbons in the glacimarine sediments of Arctic Svalbard. MARINE POLLUTION BULLETIN 2023; 189:114740. [PMID: 36841213 DOI: 10.1016/j.marpolbul.2023.114740] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/09/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
Distribution and sources of polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs) in the glacimarine sediments (35 sites) of Svalbard were investigated. PCBs (32 congeners), traditional PAHs (15 homologs), emerging PAHs (11 homologs), and alkylated PAHs (16 homologs) were widely distributed in the Svalbard sediments (ranges: below method detection limit to 20, 21 to 3600, 1.0 to 1400, and 31 to 15,000 ng g-1 dry weight, respectively). Compositional analysis indicated that PCBs mainly originated from combustion sources, with PAHs being strongly influenced by local sources. Positive matrix factorization analysis showed that PAHs were associated with vehicle and petroleum combustion, coal, and coal combustion. Coal-derived PAHs contributed significantly to the sediments of Van Mijenfjorden. Remnants of coal mining activity trapped in the permafrost appear to enter the coastal environments as ground ice melts. Consequently, PAHs are currently emerging as the most significant contributors to potential risks in the Svalbard ecosystems.
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Affiliation(s)
- Juhee Lee
- Department of Marine Environmental Science, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Youngnam Kim
- Department of Marine Environmental Science, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Jihyun Cha
- Department of Marine Environmental Science, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Dahae Kim
- Division of Glacial Environment Research, Korea Polar Research Institute, Incheon 21990, Republic of Korea; Department of Marine Science and Convergence Technology, Hanyang University ERICA campus, Ansan 15588, Republic of Korea
| | - Kwangchul Jang
- Division of Glacial Environment Research, Korea Polar Research Institute, Incheon 21990, Republic of Korea
| | - Jung-Hyun Kim
- Division of Glacial Environment Research, Korea Polar Research Institute, Incheon 21990, Republic of Korea
| | - Seung-Il Nam
- Division of Glacial Environment Research, Korea Polar Research Institute, Incheon 21990, Republic of Korea
| | - Seongjin Hong
- Department of Marine Environmental Science, Chungnam National University, Daejeon 34134, Republic of Korea.
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Chiaia-Hernández AC, Casado-Martinez C, Lara-Martin P, Bucheli TD. Sediments: sink, archive, and source of contaminants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:85761-85765. [PMID: 36352072 PMCID: PMC9646277 DOI: 10.1007/s11356-022-24041-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Affiliation(s)
- Aurea C Chiaia-Hernández
- Institute of Geography & Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland.
| | | | - Pablo Lara-Martin
- Physical Chemistry Department, Faculty of Marine and Environmental Sciences, Campus of International Excellence of the Sea (CEI·MAR), University of Cadiz, 11510, Puerto Real, Spain
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Qi R, Pan L, Liu T, Li Z. Source risk, ecological risk, and bioeffect assessment for polycyclic aromatic hydrocarbons (PAHs) in Laizhou Bay and Jiaozhou Bay of Shandong Peninsula, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:56705-56726. [PMID: 35347599 DOI: 10.1007/s11356-022-19778-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 03/13/2022] [Indexed: 06/14/2023]
Abstract
In order to incorporate the contribution of pollution sources to ecological risks into environmental monitoring, positive matrix factorization-risk quotient (PMF-RQ) was used to quantify the contribution of different PAH sources to ecological risks, which indicated that the unburned petroleum, vehicular emissions, and diesel combustion were the main sources of PAHs in Laizhou Bay and Jiaozhou Bay, and they were caused by petrochemical industry, maritime shipping, and urban traffic exhaust as the major sources of PAHs for ecological risk. Meanwhile, integrated biomarker response (IBR) and multi-biomarker pollution index (MPI) suggested that September was the most polluted month for PAHs in Laizhou Bay and Jiaozhou Bay and the pollution in Laizhou Bay was significantly higher than that in Jiaozhou Bay. This research was dedicated to explore the monitoring pattern for PAH pollution from the source to bioeffects, and it may have contributed a scientific support to monitoring and governance of marine PAH pollution.
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Affiliation(s)
- Ruicheng Qi
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China
| | - Luqing Pan
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China.
- Fisheries College, Ocean University of China, Yushan Road 5, Qingdao, 266003, China.
| | - Tong Liu
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China
| | - Zeyuan Li
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, China
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Chen CF, Ju YR, Lim YC, Wang MH, Albarico FPJB, Chen CW, Dong CD. Potential sources and toxicity risks of polycyclic aromatic hydrocarbons in surface sediments of commercial ports in Taiwan. MARINE POLLUTION BULLETIN 2022; 181:113924. [PMID: 35841673 DOI: 10.1016/j.marpolbul.2022.113924] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/09/2022] [Accepted: 07/04/2022] [Indexed: 06/15/2023]
Abstract
The accumulation of pollutants in the semi-enclosed waters of ports has long been a concern. This study assessed the pollution status, sources, and toxicity risks of 16 polycyclic aromatic hydrocarbons (PAHs) in surface sediments of 7 major ports in Taiwan. Total PAHs concentrations in sediments ranged between 8.4 and 572.5 ng/g dw, with an average of 112.4 ± 136.5 ng/g dw. The 3- and 4-ring PAHs (63 %) were the major constituents of PAHs in the sediments. Diagnostic ratios and positive matrix factorization analyses indicated that PAHs in sediments were mainly contributed by biomass combustion (45.0 %), coal combustion (31.5 %), and vehicle emissions and related fossil fuels (23.5 %). The results of ecological risk assessment showed a low-medium risk of PAHs in the sediments outside the port, whereas most of the sediments within the port presented a medium-high risk. An assessment of the possible human health risks indicated that PAHs were present at acceptable levels.
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Affiliation(s)
- Chih-Feng Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Yun-Ru Ju
- Department of Safety, Health and Environmental Engineering, National United University, Miaoli 36063, Taiwan
| | - Yee Cheng Lim
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Ming-Huang Wang
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Frank Paolo Jay B Albarico
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Fisheries and Marine Research Station, College of Fisheries and Allied Sciences, Northern Negros State College of Science and Technology, Sagay City 6122, Philippines
| | - Chiu-Wen Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
| | - Cheng-Di Dong
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
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An Advanced PMF Model Based on Degradation Process for Pollutant Apportionment in Coastal Areas. WATER 2022. [DOI: 10.3390/w14111823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
With increasing stress posed to the marine ecosystem and coastal communities, prevention and control of coastal pollution becomes urgent and important, in which the identification of pollution sources is essential. Currently, the pollutant source apportionment in coastal areas is mainly based on receptor models, such as the positive matrix factorization (PMF) model. Nevertheless, these models still lack consideration of the changes of pollutant behaviors (e.g., the degradation of pollutants) which cause the differences in pollutant compositions. Subsequently, the source apportionment via receptor models only based on the monitoring data may not be consistent with the one in pollution sources. To fill this gap, a pollutant degradation model was firstly developed in this study. Accordingly, the degradation model was inversed to estimate the pollutant concentrations at their emitting sources, based on the monitoring concentration in the coastal area. Finally, the estimated concentrations were fed to the PMF model for pollutant source apportionment, advancing the PMF model with degradation process. To demonstrate the feasibility and accuracy of the developed model, a case study of source appointment was carried out based on the polycyclic aromatic hydrocarbons (PAHs) in the sediments of the Pearl River Estuary. The results indicated the same types of emission source identified by the original and advanced PMF models, which were oil spill, biomass and coal combustion, and traffic emission. Nevertheless, the contributions of sources were significantly varied between the two models. According to the analyses based on emission inventory, the offsets of the results from the original PMF model were −55.4%, 22.7%, and 42.2% for the emission sources of oil spill, biomass and coal combustion, and traffic emission, respectively. Comparatively, the offsets for the advanced PMF model narrowed down to −27.5%, 18.4%, and −4.4%. Therefore, the advanced PMF model is able to provide satisfactory source apportionment for organic pollutants in coastal areas, and thus further provide a scientific basis for marine pollution prevention and control.
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Pyrolytic Remediation and Ecotoxicity Assessment of Fuel-Oil-Contaminated Soil. TOXICS 2022; 10:toxics10050245. [PMID: 35622658 PMCID: PMC9144531 DOI: 10.3390/toxics10050245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 05/07/2022] [Accepted: 05/10/2022] [Indexed: 11/24/2022]
Abstract
Oil-contaminated soil is a major societal problem for humans and the environment. In this study, the pyrolysis method was applied to oil-contaminated soil used as a landfill and gas station site in Korea. The removal efficiency of the main components of oil-contaminated soils, such as total petroleum hydrocarbons (TPH), polyaromatic hydrocarbons (PAHs), unresolved complex mixture (UCM), and alkylated PAHs (Alk-PAHs) were measured, and the effect of temperature, treatment time, and moisture content on pyrolysis efficiency was studied. In order to evaluate the risk of soil from which pollutants were removed through pyrolysis, integrated ecotoxicity was evaluated using Daphnia magna and Allivibrio fischeri. The chemical and biological measurements in this study include contaminants of emerging concerns (CECs). Results showed that the pyrolysis was more efficient with higher treatment temperatures, moisture content, and treatment times. In addition, toxicity was reduced by 99% after pyrolysis, and the degree of toxicity was evaluated more sensitively in Allivibrio fischeri than in Daphnia magna. This study shows that weathered oil-contaminated soil can be effectively treated in a relatively short time through pyrolysis, as well as provides information on efficient conditions and the assessment of ecotoxicity.
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Zafarani GG, Karbalaei S, Golshani R, Pustokhina I, Walker TR. Baseline occurrence, distribution and sources of PAHs, TPH, and OCPs in surface sediments in Gorgan Bay, Iran. MARINE POLLUTION BULLETIN 2022; 175:113346. [PMID: 35114549 DOI: 10.1016/j.marpolbul.2022.113346] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 01/08/2022] [Accepted: 01/10/2022] [Indexed: 06/14/2023]
Abstract
Baseline polycyclic aromatic hydrocarbons (PAHs), total petroleum hydrocarbons (TPH) and organochlorine pesticides (OCPs) in surface sediments were measured in Gorgan Bay, Iran. Total PAHs, TPH, and OCPs concentrations ranged between 13.70 and 23.68 ng g-1, 2.97 to 11.51 μg g-1 dry weight, and below detection to 1.41 ng g-1, respectively. Benzo [k] fluoranthene and anthracene had the highest (BkF; 19.77 ± 0.08 ng g-1), and lowest (Ant; 4.38 ± 1.72 ng g-1) individual PAH concentrations, respectively. The most abundant OCPs were β-Endosulfan, followed by methoxychlor and endrin. PAH isomeric ratios in sediments revealed that contamination originated from mixed sources, with a strong indication of pyrogenic sources. Ecological risk assessments based on sediment quality guidelines (SQGs) suggested that individual PAHs and OCPs posed low ecological risks in Gorgan Bay.
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Affiliation(s)
- Ghasem Ghorbanzadeh Zafarani
- Research Center for Environment and Sustainable Development (RCESD), Iranian Department of Environment, Tehran 141551156, Iran.
| | - Samaneh Karbalaei
- Research Center for Environment and Sustainable Development (RCESD), Iranian Department of Environment, Tehran 141551156, Iran
| | | | - Inna Pustokhina
- Sechenov First Moscow State Medical University, Department of Propaedeutics of Dental Diseases, Moscow, Russia
| | - Tony R Walker
- School for Resource and Environmental Studies, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
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Sojobi AO, Zayed T. Impact of sewer overflow on public health: A comprehensive scientometric analysis and systematic review. ENVIRONMENTAL RESEARCH 2022; 203:111609. [PMID: 34216613 DOI: 10.1016/j.envres.2021.111609] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 06/16/2021] [Accepted: 06/24/2021] [Indexed: 05/09/2023]
Abstract
Sewer overflow (SO), which has attracted global attention, poses serious threat to public health and ecosystem. SO impacts public health via consumption of contaminated drinking water, aerosolization of pathogens, food-chain transmission, and direct contact with fecally-polluted rivers and beach sediments during recreation. However, no study has attempted to map the linkage between SO and public health including Covid-19 using scientometric analysis and systematic review of literature. Results showed that only few countries were actively involved in SO research in relation to public health. Furthermore, there are renewed calls to scale up environmental surveillance to safeguard public health. To safeguard public health, it is important for public health authorities to optimize water and wastewater treatment plants and improve building ventilation and plumbing systems to minimize pathogen transmission within buildings and transportation systems. In addition, health authorities should formulate appropriate policies that can enhance environmental surveillance and facilitate real-time monitoring of sewer overflow. Increased public awareness on strict personal hygiene and point-of-use-water-treatment such as boiling drinking water will go a long way to safeguard public health. Ecotoxicological studies and health risk assessment of exposure to pathogens via different transmission routes is also required to appropriately inform the use of lockdowns, minimize their socio-economic impact and guide evidence-based welfare/social policy interventions. Soft infrastructures, optimized sewer maintenance and prescreening of sewer overflow are recommended to reduce stormwater burden on wastewater treatment plant, curtail pathogen transmission and marine plastic pollution. Comprehensive, integrated surveillance and global collaborative efforts are important to curtail on-going Covid-19 pandemic and improve resilience against future pandemics.
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Affiliation(s)
| | - Tarek Zayed
- Department of Building and Real Estate, The Hong Kong Polytechnic University, Hong Kong, China.
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Kim Y, Hong S, Lee J, Yoon SJ, An Y, Kim MS, Jeong HD, Khim JS. Spatial distribution and source identification of traditional and emerging persistent toxic substances in the offshore sediment of South Korea. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 789:147996. [PMID: 34062466 DOI: 10.1016/j.scitotenv.2021.147996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 04/09/2021] [Accepted: 05/20/2021] [Indexed: 06/12/2023]
Abstract
While the coastal pollution of persistent toxic substances (PTSs) has been widely documented, information on offshore environments remains limited. Here, we investigated the spatial distribution and sources of PTSs in the offshore sediments (n = 34) of South Korea. Sediment samples collected from the Yellow Sea (n = 18), the South Sea (n = 10), and the East Sea (n = 6), in 2017-18 were analyzed for a total of 71 PTSs. Target compounds include 31 PCBs, 15 PAHs, 9 emerging PAHs (e-PAHs), 10 styrene oligomers (SOs), and 6 alkylphenols (APs). Sedimentary PCBs showed relatively low concentrations with no significant difference across the three seas (0.16-6.9 ng g-1 normalized organic carbon, OC). Low-chlorinated PCBs (tri- and tetra Cl-CBs) were predominant (mean: 77%), primarily indicating atmospheric inputs. PAHs widely accumulated in the three seas with low to moderate level (22-250 ng g-1 OC), and dominated by high molecular weight PAHs (4-6 rings). PMF analysis revealed coast-specific PAHs sources; i.e., originated from mainly coke production (77%) in the Yellow Sea, vehicle emissions (68%) in the South Sea, and fossil fuel combustion (49%) in the East Sea. SOs showed significant contamination than other PTSs, with elevated concentrations in the Yellow Sea (mean: 350 ng g-1 OC). APs showed a similar regional distribution to SOs, but concentrations were much lower (mean: 17 ng g-1 OC). SOs and APs seemed to be introduced from rivers and estuaries on the west coast of Korea, where industrial and municipal activities are concentrated, then might be transported to offshore through tide or currents. Overall, the novel data presented for various PTSs in offshore Korean sediments warrant the necessity of a long-term monitoring effort and urgent management practice to protect marine ecosystem.
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Affiliation(s)
- Youngnam Kim
- Department of Marine Environmental Science, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Seongjin Hong
- Department of Marine Environmental Science, Chungnam National University, Daejeon 34134, Republic of Korea.
| | - Junghyun Lee
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Seo Joon Yoon
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea
| | - Yoonyoung An
- Department of Marine Environmental Science, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Min-Seob Kim
- Fundamental Environment Research Department, Environmental Measurement & Analysis Center, National Institute of Environmental Research, Incheon 22689, Republic of Korea
| | - Hee-Dong Jeong
- East Sea Fisheries Research Institute, National Institute of Fisheries Science, Gangneung 25435, Republic of Korea
| | - Jong Seong Khim
- School of Earth and Environmental Sciences & Research Institute of Oceanography, Seoul National University, Seoul 08826, Republic of Korea.
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