Article
Environmental Sciences
Minna Zhang, Zhenwu Tang, Hongmin Yin, Tong Meng
Summary: A systematic meta-analysis was conducted on the concentration, risk, and spatiotemporal variation of PAHs in river sediments from the seven major river systems in China based on data from 1997-2020. Higher concentrations of sediment PAHs were found in the basins of Liaohe River and Haihe River, primarily from coal and fossil fuel combustion. While there was no downward trend in PAH concentrations in sediment over the past 20 years, the contribution of high-temperature combustion to pollution has declined.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Ram B. Jain
Summary: The study evaluated the variations in concentrations of selected monohydroxy polycyclic aromatic hydrocarbons in urine across different stages of glomerular function, finding differences in how the kidneys process PAH metabolites among smokers and nonsmokers.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Jiaxun Guo, Yu Xie, Aomei Guan, Weixiao Qi, Xiaofeng Cao, Jianfeng Peng, Huijuan Liu, Xinghua Wu, Chong Li, Dianchang Wang, Jiuhui Qu
Summary: Dam construction has a significant impact on pollutant distribution in sediments, specifically in the Yangtze River. The construction alters the spatial trajectories of inorganic and organic pollutants, resulting in higher accumulation of pollutants upstream of the dam and lower levels downstream. These findings are important for assessing the environmental impact of dam-induced river fragmentation and developing effective pollutant management strategies.
ENVIRONMENTAL POLLUTION
(2023)
Article
Biotechnology & Applied Microbiology
Savannah J. Volkoff, Daniel L. Rodriguez, David R. Singleton, Alexander W. McCumber, Michael D. Aitken, Jill R. Stewart, Claudia K. Gunsch
Summary: This study investigated the bacterial community of the Elizabeth River using both culture-based and culture-independent methods, and identified potential candidates for bioremediation of PAH contaminants. The results showed the presence of PAH-degrading bacteria in the sediment, and a divergence in the microbial community between highly contaminated and less contaminated sites. The study highlights the importance of both culture-based and culture-independent methods in identifying promising bacterial candidates for precision bioremediation.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2022)
Article
Environmental Sciences
Ruqayah Ali Grmasha, Marwan H. Abdulameer, Csilla Stenger-Kovacas, Osamah J. Al-sareji, Zaid Al-Gazali, Raed A. Al-Juboori, Monika Meiczinger, Khalid S. Hashim
Summary: This study conducted a comprehensive measurement campaign of 16 PAHs along the Euphrates River for five months, examining water and sediment samples. The results showed that PAHs contamination increased along the flow direction, mainly due to non-point pollution and agricultural return flows. The dominant PAHs in both water and sediment samples were 5-6 rings PAHs, accounting for an average of 42% and 50% respectively. The pollution of these compounds originated mainly from petroleum product combustions according to the diagnostic ratios of PAHs. Carcinogenic PAHs constituted a significant portion of the total measured compounds in water and sediment samples, highlighting potential ecological and human health risks. The sediment quality guidelines indicated that most sites had effects ranging from low to medium. The calculated incremental lifetime cancer risk (ILCR) for adults and children was higher than what was reported in the literature, suggesting an urgent need for attention from environmental authorities in Western Asian countries sharing this important water source.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Cao Jianrong, Liu Yanjun, Yu Sujie
Summary: The occurrence of organic pollutants, specifically polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs), was assessed in soil samples collected from two sub-regions in the Yellow River Delta, China. The concentrations of PAHs and PCBs varied in the soil samples, with higher concentrations found in the oil field area. The main source of PAHs was determined to be petroleum input, while low-chlorine congeners of PCBs were more prevalent in the oil field area. The study suggests that PCB emissions in the Yellow River Delta are influenced by both the Gudong oilfield and other industrial sources.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Review
Environmental Sciences
Meng Qiao, Weixiao Qi, Huijuan Liu, Jiuhui Qu
Summary: Oxygenated polycyclic aromatic hydrocarbons (OPAHs) have higher concentrations and toxicity in water environments, posing significant ecological risks to surface water ecosystems.
ENVIRONMENT INTERNATIONAL
(2022)
Article
Environmental Sciences
Linjie Zhang, Lilan Zhang, Dong Sun
Summary: Zooplankton play a crucial role in energy transfer in the marine food chain and are the main food source for important fish species. However, current studies often overlook the differences among different zooplankton taxa, leading to inaccurate assessment of their bioaccumulation ability. This study used data from two cruise surveys in the South China Sea to analyze the distribution properties of each zooplankton group. The results showed that smaller zooplankton tended to accumulate low molecular weight polycyclic aromatic hydrocarbons (PAHs), while larger zooplankton were more likely to accumulate high molecular weight PAHs. The complex community structure within plankton communities should be considered when assessing the transfer and bioaccumulation effects of PAHs in the marine food chain.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Xiaohua Ma, Hao Yang, Shuaidong Li, Changchun Huang, Tao Huang, Hongbin Wan
Summary: The correlation between polycyclic aromatic hydrocarbons (PAHs) and economic parameters in Dianchi Lake, Yunnan province, China, was analyzed, showing significant impact of total population, GDP, energy consumption, etc. An artificial neural network (ANN) model was developed to predict the trend in PAH concentrations in the sediments over the next 10 years. Results indicate the importance of economic and climate factors in increasing pollution levels.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Multidisciplinary Sciences
Yusuke Nakakuki, Takashi Hirose, Hikaru Sotome, Min Gao, Daiki Shimizu, Ruiji Li, Jun-Ya Hasegawa, Hiroshi Miyasaka, Kenji Matsuda
Summary: Helically twisted conductive nanocarbon materials are suitable for optoelectronic and electromagnetic molecular devices on the nanometer scale, showing a large effective conjugation length and ultrafast decay dynamics. The extended π-helicenes achieved a large effective conjugation length through helical fusion, leading to an absorption edge in the near-infrared region.
NATURE COMMUNICATIONS
(2022)
Article
Environmental Sciences
Romulo Nepomuceno Alves, Celio Freire Mariz Jr, Maria Karolaine Melo Alves, Maria Gabriella Neri Cavalcanti, Thalita Joana Bezerra De Melo, Roxanny Helen De Arruda-Santos, Eliete Zanardi-Lamardo, Paulo S. M. Carvalho
Summary: The study evaluated the ecotoxicity of surface waters along the Capibaribe River using zebrafish early-life stages, identifying spatial differences in ecotoxicity, sewage contamination, and eutrophication risk. Results showed smaller impact in rural areas, intermediate impact with urban and agricultural influence, and greatest impacts at more urbanized sites, demonstrating the potential of zebrafish as an ecotoxicological model for understanding tropical river systems.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Xiushang Xu, Amy L. Vonder Haar, Rengo Yoshioka, Qizheng Zhang, Serhii Vasylevskyi, Andrew J. Musser, Akimitsu Narita
Summary: A benzo[rst]pentaphene derivative, BPP-MeOPA, was synthesized and characterized by NMR and single-crystal X-ray analysis. Investigation of its photophysical properties, including transient absorption spectroscopy, revealed improved absorption and emission features from an S-1 state with excitonic and charge-transfer character by introducing MeOPA groups.
CHEMICAL COMMUNICATIONS
(2023)
Article
Environmental Sciences
Ram B. Jain
Summary: This study estimated the associations between urinary concentrations of oxidant polycyclic aromatic hydrocarbon (PAH) metabolites and serum concentrations of anti-oxidant alpha-klotho in US adults aged 40-79 years. The results showed that increased levels of certain PAH metabolites were associated with decreased serum alpha-klotho concentrations, especially in individuals without albuminuria and normal or near normal kidney function.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Ram B. Jain
Summary: The associations between urinary concentrations of oxidant polycyclic aromatic hydrocarbon (PAH) metabolites and serum concentrations of anti-oxidant alpha-klotho were examined in US adults aged 40-79 years. The study found that increased PAH metabolite concentrations were associated with decreased alpha-klotho concentrations in individuals with normal or near normal kidney function. However, the associations were not significant in individuals with albuminuria. These findings suggest that exposure to PAH may lead to reduced alpha-klotho concentrations.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Yan-Ling Deng, Pan Yang, Yi-Xin Wang, Chong Liu, Qiong Luo, Tian Shi, Jia-Yue Zeng, Ting-Ting Lu, Pan-Pan Chen, Yu Miao, Min Zhang, Fei-Peng Cui, Wen-Qing Lu, Qiang Zeng
Summary: Previous studies have found associations between exposure to phthalates and polycyclic aromatic hydrocarbons (PAHs) and altered semen quality, but no studies have evaluated their combined effects. This study aimed to investigate the associations between urinary metabolite mixtures of phthalates and PAHs and semen quality.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
