Article
Green & Sustainable Science & Technology
Chengyou Liu, Zhifeng Huang, Abdul Qadeer, Yan Liu, Xiaocui Qiao, Binghui Zheng, Gaofeng Zhao, Xingru Zhao
Summary: The study found that PAHs are present in different types of drinking water sources, such as rivers, lakes, and river networks in the Yangtze River Delta, with differences mainly manifesting in the dominance of low molecular weight PAHs in water and high molecular weight PAHs in sediment; substances such as Nap, Dih, Flu, Phe, Ant, and BaP are resuspended from sediment to water in a net manner, while Ind, BbF, BkF are transferred from water to sediment.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Xiongyi Miao, Yupei Hao, Jiawei Cai, Yincai Xie, Jingru Zhang
Summary: The study investigates the accumulation of PAHs in sediments in the karstic Liujiang River Basin, revealing their sources, input processes, and toxicity risk. The concentrations of n-ary sumation 15PAHs range from 111.97 to 593.39 ng/g, with the majority concentrated upstream and midstream of Liujiang River. The findings suggest that PAHs mainly originate from mixed combustion of oil and coal, biomass combustion, and oil products leaking. The results indicate a moderate contamination of PAHs based on RQNCs and RQMPCs values. The ingestion of PAHs poses the main risk to public health, especially for children. The overall non-carcinogenic risk of PAHs is low, but the carcinogenic risk is relatively high.
MARINE POLLUTION BULLETIN
(2023)
Article
Engineering, Environmental
Yanyan Yang, Zhuanjun Zhao, Yang Chang, Huan Wang, Haiyan Wang, Weiyang Dong, Guokai Yan
Summary: The contamination of PAHs and PAEs in river sediments in China, particularly in some tributaries, is not well understood. This study investigated the distribution, sources, and risk of these contaminants in the Nenjiang River and the Second Songhua River in Northeast China. The results showed that the contamination levels were relatively low and posed negligible ecological risks, although BaA and certain PAEs may still have a potential impact.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Environmental Sciences
Anh Quoc Hoang, Shin Takahashi, Nhu Da Le, Thi Thu Ha Hoang, Thi Thuy Duong, Thi Mai Huong Pham, Tien Dat Nguyen, Thi Xuan Binh Phung, Thi Anh Huong Nguyen, Huu Tuyen Le, Minh Tue Nguyen, Minh Binh Tu, Yen Thi Hong Nguyen, Thi Minh Loi Nguyen, Vu Phong Phung, Thi Phuong Quynh Le
Summary: The study examined the presence of PAHs and Me-PAHs in surface sediments from the Red River and four inner-city rivers of Hanoi City, Vietnam. Significant correlation was found between organic carbon content and PAH concentration, indicating pyrogenic sources from the highly urbanized area. The occurrence of several PAHs was occasionally associated with adverse effects on benthic organisms in the inner-city rivers.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2021)
Article
Engineering, Environmental
Zhu Wang, Yong Jun Liu, Lu Yang, Zhuang Zhuang Yang, Ai Ning Zhang, Zhi Hua Li, Zhe Liu
Summary: This study systematically analyzed the contents, compositions, and sources of polycyclic aromatic hydrocarbons (PAHs) in river sediments near an important energy and chemical base in northwest China. The results showed that PAHs in the region have complex sources and pose potential ecological and carcinogenic risks.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2022)
Article
Environmental Sciences
Zhipeng Wang, Aoxiang Fan, Wenzhong Tang, Hong Zhang, Shuzhen Zhang
Summary: The study investigated the distribution of PAHs in sediments of Ziya River Plain (ZYRP), and evaluated their sources and risks. Results showed high concentrations of PAHs mainly originating from fossil fuel combustion and wood, coal combustion. The ecological risk in the whole area was moderate, with Niuwei River having the highest risk, and a significant correlation was found between high-molecular-weight PAHs and ecological risk.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2021)
Article
Environmental Sciences
Qi Huang, Yaxian Zhu, Fang Wu, Yong Zhang
Summary: This study explored the characteristics, distributions, sources, and ecological risk of parent PAHs and A-PAHs in six mangrove wetlands across the Taiwan Strait in China. The total concentration of 36 PAHs in sediment samples varied greatly, with coal combustion and petroleum combustion identified as important contributing sources in some wetlands. Individual ecological risk assessments of A-PAHs are needed due to lack of criteria for most of them.
Article
Engineering, Environmental
Rashid Mohammed, Zi-Feng Zhang, Ying-Hua Hu, Chao Jiang, Zhi-Qiang He, Wen-Juan Wang, Yi-Fan Li
Summary: The study investigated the distribution patterns and health risk assessment of NPAHs, OH-PAHs, and PAHs in sediment from the Songhua River. Concentrations of 16 USEPA priority PAHs, OH-PAHs, and NPAHs were found to be much higher during dry seasons compared to wet seasons, with significant contributions from vehicle emissions and biomass burning. The study confirms BaP to be 81% carcinogenic, indicating escalating health issues related to these pollutants.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2022)
Article
Environmental Sciences
Ying Zhao
Summary: This study examined the concentration, sources, and ecological risk of PAHs in sediment of Fenhe River. The results showed high levels of PAHs, primarily from the burning of oil, coal, and biomass. Ecological risk assessment indicated the presence of comprehensive and carcinogenic risks in the study area.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Effrosyni Zafeiraki, Evangelos Moulas, Konstantinos M. Kasiotis, Evangelos Bakeas, Emmanouil Dassenakis
Summary: This study investigates the occurrence, distribution, sources, and ecotoxicological risk of polycyclic aromatic hydrocarbons (PAHs) in sediment samples collected from three areas along the Hellenic coastline. The results reveal that Piraeus harbor is the most contaminated area, followed by Saronikos Gulf and Heraklion. Most sampling sites show evidence of combustion as the source, with petroleum contamination also indicated in Piraeus harbor. Risk assessment indicates low or no adverse health effects for exposed biota in Saronikos Gulf and Heraklion, while BaP is identified as the main contributor to carcinogenic and mutagenic risk in Piraeus harbor.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Yibo Dong, Zaisheng Yan, Huifang Wu, Guoqing Zhang, Haichen Zhang, Mingzhong Yang
Summary: The study found that PAHs in sediments of Taihu Lake bay were mainly influenced by petroleum contamination, while PAHs in riverine sediments were derived from petroleum contamination and combined combustion. In sediment risk assessment, potential ecological risks were identified in partial regions of Taihu Lake bay and adjoining river.
Article
Environmental Sciences
Andrew J. Moodie, Jeffrey A. Nittrouer, Hongbo Ma, Brandee N. Carlson, Yuanjian Wang, Michael P. Lamb, Gary Parker
Summary: This study demonstrates that sediment concentration may influence the magnitude and pattern of vertical density stratification through sampling and measurement under different flow conditions in the lower reach of the Yellow River. The importance lies in the understanding of the vertical density stratification phenomenon in natural river flows, which can improve sediment transport models and provide guidance for ecological environmental management and flood protection measures in rivers.
WATER RESOURCES RESEARCH
(2022)
Article
Environmental Sciences
S. Boitsov, B. K. Newman, H. F. Muiambo, E. F. C. Chauque, B. Serigstad, B. S. Malauene
Summary: The study of LNG exploration off the coast of northern Mozambique found background levels of hydrocarbons and metals in most sediment samples, with anthropogenic contamination present at one site. Elevated concentrations of barium and THC at certain locations were attributed to drilling activities.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Hamidreza Cheshmvahm, Behnam Keshavarzi, Farid Moore, Mehdi Zarei, Hamid Reza Esmaeili, Peter S. Hooda
Summary: This study examined the level of PAHs concentration in water, sediment, and fish samples from Anzali Wetland in north of Iran. The results showed that the average concentration of n-ary sumation PAHs in sediment was 89.19 μg/kg and in water was 78.31 ng/L. The findings also indicated a petrogenic origin of PAHs in water and pyrogenic origin in sediment. The contamination level in fish was relatively low to moderate, but unless control measures are taken, the wetland could face higher levels of contamination in the future.
MARINE POLLUTION BULLETIN
(2023)
Article
Engineering, Civil
Uilson Ricardo Venancio Aires, Demetrius David da Silva, Elpidio Inacio Fernandes Filho, Lineu Neiva Rodrigues, Eduardo Morgan Uliana, Ricardo Santos Silva Amorim, Celso Bandeira de Melo Ribeiro, Jasmine Alves Campos
Summary: This study aimed to predict the surface sediment concentration (SSC) in the Doce river basin using machine learning-based models. Various predictor variables, such as terrain slope, land use and cover, precipitation, and river discharge, were employed. The machine learning algorithms, particularly Cubist and XGBoost models, showed the best performance in predicting the SSC. River discharge and time-lagged discharge were identified as important predictor variables for SSC modeling. Cumulative daily mean precipitation also played a significant role in the sediment modeling. This study highlights the potential of machine learning models in sediment monitoring and understanding sediment dynamics.
JOURNAL OF HYDROLOGY
(2023)
