Article
Environmental Sciences
Haiyan Li, Xuesong Wang, Yongzhan Mai, Zini Lai, Yanyi Zeng
Summary: This study investigates the cumulative effects of microplastics (MPs) and organic pollutants (OPs) in the environment and organisms. It finds that while MPs have limited influence on the accumulation of poly-cyclic aromatic hydrocarbons (PAHs), they potentially participate in the selective bioaccumulation of low-ring PAHs in fishes based on fish biology. Furthermore, significant correlations between MPs abundance and PAHs in fishes with different feeding and living habits are found.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Jiachao Zhang, Xuanrui Zhang, Tao Hu, Xueyan Xu, Decun Zhao, Xiaoli Wang, Lei Li, Xianzheng Yuan, Chao Song, Shan Zhao
Summary: PAH pollution and antibiotic pollution are common environmental problems in the Yellow River Estuary, China. This study investigated the bioaccumulation and influencing factors of PAHs and antibiotics in aquaculture areas of the Yellow River Estuary. The study found that 3-ring PAHs and fluoroquinolones were dominant contaminants in the area. The concentrations of PAHs and antibiotics in lipid-rich tissues were higher than that in muscle, indicating that lipid content is an important factor affecting bioaccumulation.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yumeng Guo, Herdya S. Torchon, Yikun Zhu, Zheng Wei, Zhenyi Zhang, Haixiang Han, Marina A. Petrukhina, Zheng Zhou
Summary: This study investigates the chemical reactivity of a fullerene fragment with alkali metals using truxene as a model. The results demonstrate the dependence of core curvature on charge and alkali metal coordination. Additionally, the deprotonation process introduces aromaticity and pi-conjugation, resulting in changes in the optical properties.
Article
Environmental Sciences
Murugan Rajadurai, Natchimuthu Karmegam, Soundarapandian Kannan, Ananthanarayanan Yuvaraj, Ramasundaram Thangaraj
Summary: The study demonstrated that the earthworm species Drawida modesta and Lampito mauritii effectively removed polycyclic aromatic hydrocarbons (PAHs) and total petroleum hydrocarbons (TPHs) from oil-contaminated soil. Seed germination assay results showed a significant increase in germination percentage and index in earthworm inoculated treatments.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Fengsong Zhang, Guixiang Zhang, Xiaoyong Liao
Summary: The study demonstrated that the addition of biochars can reduce the dissipation of PAHs in soil and increase their uptake by plants, especially for LMW-PAHs and MMW-PAHs. The significant reduction of Proteobacteria in biochar-amended soils resulted in a slower biodegradation of PAHs.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Environmental Sciences
Yousria Soliman, Terry L. Wade, Jose L. Sericano, Ibrahim Al Ansari
Summary: This study measured the spatiotemporal concentration patterns of 19 parents and their alkyl homologues in Pinctada radiata from 7 locations in the central Arabian Gulf around Qatar. The results showed significant differences in PAH concentrations among different locations and seasons, with higher residual PAHs in oysters in winter compared to spring and summer. The dominant source of PAHs in oysters was identified as petrogenic and fuel combustion.
MARINE POLLUTION BULLETIN
(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
Jingqian Xie, Ling Tao, Qiang Wu, Shuyi Tu, Bilin Liu, Tian Lin, Lili Yang, Cui Li, Guorui Liu
Summary: This study found for the first time the presence of nine target chlorinated and brominated PAH congeners in squid. The transfer of these carcinogenic halogenated polycyclic aromatic hydrocarbons (HPAHs) in squid is related to global trade. The lipid content of squid is the most significant factor influencing HPAH bioaccumulation, while differences in squid growth and local ocean contamination influenced by geographical distribution also affect HPAH bioaccumulation. International squid trading can affect the redistribution and risk transfer of HPAHs in squid as food. The cancer risks from squid consumption in China and Mexico were increased by 50% and 30%, respectively, due to international squid trading.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Chemistry, Organic
Xavier Aguilar-Enriquez, Luke P. Skala, William R. Dichtel
Summary: The synthesis of a diol with a nonalternant aromatic core has been successfully achieved, providing a nonalternant isomer of bisanthene suitable for two-dimensional polymerization. Unexpectedly, a Stone-Wales rearrangement of the starting material yielded both an alternant and nonalternant dione, allowing for the divergent synthesis of both products. This study offers a convenient method for accessing functional derivatives of two PAH classes and highlights the importance of careful characterization in multistep synthetic routes.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Environmental Sciences
Juma John Moses Abayi, Christopher Tombe Gore, Christine Nagawa, Benjamin A. Musa Bandowe, Henry Matovu, Edward Mubiru, Emily Chelangat Ngeno, Silver Odongo, Mika Sillanpaa, Patrick Ssebugere
Summary: The study found high levels of polycyclic aromatic hydrocarbons (PAHs) in sediments and fish from the White Nile near Melut oil fields in South Sudan, with a significant impact on Clarias gariepinus. Bioaccumulation of PAHs in fish was mainly influenced by low molecular weight PAHs, and the predominant source of PAHs in the White Nile environment was petrogenic.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Daijun Zhang, Xinkuan Han, Shangbo Zhou, Shupei Yuan, Peili Lu, Shuchan Peng
Summary: The study demonstrated that microorganisms could efficiently degrade PAHs using NO in denitrification processes, providing a new perspective for the remediation of PAH pollution. Analysis of microbial community structure revealed that Pseudomonas and Ochrobactrum played key roles in NO-dependent phenanthrene degradation system.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Kristen M. Prossner, Hamish J. Small, Ryan B. Carnegie, Michael A. Unger
Summary: Bivalve mollusks, including oysters, have a high susceptibility to accumulating lipophilic organic contaminants, such as polycyclic aromatic hydrocarbons (PAHs), due to their low metabolic potential. The consumption of oysters, which are known to have high levels of PAHs, can pose a serious public health concern in areas with high PAH contamination. This study presents a method to detect and locate complex mixtures of PAHs in oyster tissues using fluorescent immunohistochemistry, providing valuable insights into the internal partitioning mechanisms of PAH-exposed oysters and potential applications for studying PAH distribution in other organisms.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2023)
Review
Physiology
Nin Gan, Leisha Martin, Wei Xu
Summary: The past decade has seen an increase in research on the effects of crude oil chemicals, such as PAHs, on marine organisms, with oysters being a focus due to their susceptibility to contaminants. PAHs readily bioaccumulate in oysters' soft tissues and lead to negative effects such as changed gene expression, reduced DNA integrity, and abnormal larval growth. Additional stressors like temperature changes and acidification may exacerbate the negative effects of PAH exposure, while shorter-term salinity changes may reduce PAH exposure effects.
FRONTIERS IN PHYSIOLOGY
(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
Anna Pouch, Agata Zaborska, Anna Maria Dabrowska, Ksenia Pazdro
Summary: This study examined the concentrations of seven PCBs, HCB, and twelve PAHs in plankton collected from different Arctic fjords. The study found that the concentrations of most contaminants were highest in the zooplankton species Themisto abyssorum, which could be attributed to its predatory feeding strategy. The study also observed significant biomagnification of PCBs and PAHs in zooplankton predator-prey pairs.
MARINE POLLUTION BULLETIN
(2022)