Article
Engineering, Environmental
Rong-Gui Zhu, Chang-Gui Pan, Feng-Jiao Peng, Chao-Yang Zhou, Jun-Jie Hu, Kefu Yu
Summary: This comprehensive survey investigated the occurrence, bioaccumulation, and trophic magnification of parabens and their metabolite 4-HB in a marine food web. Results showed that parabens were the predominant pollutants in marine organisms, with significant bioaccumulation from sediments. The estimated trophic magnification factor indicated biomagnification for MeP and trophic dilution for 4-HB. Overall, the risks for humans consuming marine organisms were found to be low.
Article
Engineering, Environmental
Jing Li, Yuefei Ruan, Yim Ling Mak, Xiaohua Zhang, James C. W. Lam, Kenneth M. Y. Leung, Paul K. S. Lam
Summary: This study analyzed the accumulation of 17 representative MLPs in 17 species of marine food web components. Results showed that MLP concentrations were highest in mollusks and lowest in fishes, with a trophic dilution of total MLP concentrations observed.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
David J. Yurkowski, Elena McCulloch, Wesley R. Ogloff, Kelsey F. Johnson, Remi Amiraux, Niladri Basu, Kyle H. Elliott, Aaron T. Fisk, Steven H. Ferguson, Les N. Harris, Kevin J. Hedges, Kevin Jacobs, Tracey N. Loewen, Cory J. D. Matthews, C. J. Mundy, Andrea Niemi, Bruno Rosenberg, Cortney A. Watt, Melissa A. McKinney
Summary: Combining mercury and stable isotope data sets can help determine whether predator's contaminant variation is influenced by diet, habitat use, or environmental factors. We examined 249 individuals from 15 fish and four marine mammal species in coastal Arctic waters to investigate inter-species variation in total Hg concentrations, trophic magnification slope between 815N and THg, and relationships of THg with 813C and 834S. Our findings highlight the significance of employing a multi-isotopic approach, including 834S, when studying trophic Hg dynamics in coastal marine systems.
MARINE POLLUTION BULLETIN
(2023)
Article
Environmental Sciences
Yonghu Liu, Song Cui, Yue Ma, Qian Jiang, Xuewei Zhao, Qian Cheng, Lina Guo, Hongliang Jia, Li Lin
Summary: In this study, trophic transfer of PBDEs and NBFRs was investigated in marine food web in Bohai Sea, China. Significant trophic magnification was observed for certain PBDE congeners, while some NBFRs showed significant trophic dilution. Chemicals with higher K-OW values generally exhibited stronger trophic magnification capacity, but bioavailability could inhibit the trophic magnification ability of superhydrophobic compounds. This study is the first to report on the trophic transfer of NBFRs in marine food web and 9 NBFRs in aquatic food web.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Chang-Gui Pan, Shao-Ke Xiao, Ke-Fu Yu, Qi Wu, Ying-Hui Wang
Summary: The study investigated the occurrence, bioaccumulation, and trophic magnification of legacy and alternative PFAS in subtropical marine food webs in the Beibu Gulf, South China. The results showed that most PFAS exhibited low bioaccumulation levels, with only a few substances showing trophic magnification. Overall, the risk of PFAS exposure through consumption of marine organisms was found to be relatively low.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Katharine M. Fremlin, John E. Elliott, Robert J. Letcher, Tom Harner, Frank A. P. C. Gobas
Summary: This study investigated the trophic magnification of perfluoroalkylsubstances (PFAS) in a terrestrial food web by measuring concentrations in biota, air, and soil samples. The results showed that some PFAS exhibited biomagnification while others were diluted in the food web.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Qianyi Huang, Rui Hou, Lang Lin, Hengxiang Li, Shan Liu, Yuanyue Cheng, Xiangrong Xu
Summary: The accumulation and trophodynamics of organo-phosphate flame retardants (OPFRs) and their metabolites were studied in the Pearl River estuarine food web of China. The concentration of OPFRs varied among different species, with the highest in crabs and the lowest in fish. The most abundant metabolites were di-alkyl phosphates (DAPs), with concentrations higher than or equal to their parent compounds.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Biodiversity Conservation
Yang Wang, Yintao Jia, Zhengfei Li, Juan Tao, Liqun Lin, Kang Chen, Zhenyuan Liu, Xiang Tan, Quanfa Zhang
Summary: The study investigated the impact of land use on aquatic communities in two streams in subtropical China. Results showed significant variations in the trophic structure of aquatic communities among different land uses, with urban sites having narrower niche widths and higher trophic redundancy, while agricultural sites had higher trophic levels and lower niche widths.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Sen Du, Yanyan Zhou, Li Zhang
Summary: In this study, the bioaccumulation and trophic transfer of arsenic in Daya Bay were systematically investigated. The results showed that arsenic concentrations in organisms and environmental samples varied by season and demonstrated biomagnification along trophic transfer in the food web. The study suggested that a benthic habit was an important promoter for arsenic biomagnification in marine food webs.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Yiling Lin, Yanan Zhao, Yuxian Liu, Yongyin Lan, Jiamin Zhu, Yanpeng Cai, Fen Guo, Feilong Li, Yuan Zhang, Zhihao Xu, Jingchuan Xue
Summary: This study investigated the occurrence and bioaccumulation of parabens in the aquatic environment, specifically in the Dongjiang River Basin. The results showed that parabens were widely present in the samples and exhibited bioaccumulation potential. Additionally, the study estimated the daily intake of parabens through fish consumption.
ENVIRONMENTAL RESEARCH
(2024)
Article
Environmental Sciences
Qi Wu, Chang-Gui Pan, Ying-Hui Wang, Shao-Ke Xiao, Ke-Fu Yu
Summary: This study investigated the occurrence, bioaccumulation, and trophic magnification of 22 antibiotics in a subtropical food web from the Beibu Gulf. The research found distinct differences in antibiotic concentrations and types among marine taxa, with some chemicals showing trophic magnification through the food web. Additionally, the study highlighted the potential bioaccumulation of antibiotics in marine organisms based on their log D-ow values.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Qi Wang, Yuefei Ruan, Linjie Jin, Lily S. R. Tao, Han Lai, Guifeng Li, Leo W. Y. Yeung, Kenneth M. Y. Leung, Paul K. S. Lam
Summary: The ban/elimination of legacy PFASs has resulted in an increase in the production and use of emerging PFASs. However, the trophodynamics of these emerging PFASs in aquatic food webs are still not well understood. This study investigated the biomagnification potential of legacy and emerging PFASs in seawaters and marine organisms from the South China Sea. Significant trophic magnification was observed for 22 PFASs, including the first reported trophic magnification factors for certain PFASs. The presence of PFASs in seafood from the South China Sea suggests a potential human health risk.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Riikka K. Vainio, Veijo Jormalainen, Rune Dietz, Toni Laaksonen, Ralf Schulz, Christian Sonne, Jens Sondergaard, Jochen P. Zubrod, Igor Eulaers
Summary: This study investigated the trophic dynamics of Hg in the polluted Baltic Archipelago Sea using trophic magnification and biomagnification factors. The results showed overall biomagnification of THg, with higher TMFs in pelagic species compared to benthic species when excluding homeotherm birds. However, when including homeotherm birds, the difference in TMFs between benthic and pelagic species disappeared. The study emphasizes the importance of considering ecological and ecophysiological traits when studying trophic contaminant dynamics.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Gabriel Munoz, Laurie Mercier, Sung Vo Duy, Jinxia Liu, Sebastien Sauve, Magali Houde
Summary: The research investigates the presence of various PFAS in the food web of the St. Lawrence River and discovers emerging PFAS as well. It also finds differences in contamination profiles of PFAS among different biotic samples and identifies some PFAS as highly bioaccumulative and biomagnifying.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Wenzhe Xu, Paul K. S. Shin, Jun Sun
Summary: Anthropogenic nutrient input to coastal waters is a common disturbance that impacts inshore marine benthic communities, leading to changes in the composition of species and food sources.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Vineet Kumar Pal, Kurunthachalam Kannan
Summary: This study is the first to report VOCM concentrations in urine of pet dogs and cats, highlighting the need to identify sources and health implications of VOCs exposure in these animals.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Yumeng Shi, Shucong Chen, Mengqi Yan, Zhipeng Cheng, Leicheng Zhao, Yarui Liu, Bo Zhang, Hongkai Zhu, Tao Zhang, Kurunthachalam Kannan
Summary: Nitrogenous flame retardants (NFRs) have raised global concern due to their nephrotoxic effect, but the mechanism of exposure-induced kidney injury remains unknown. This study measured eight NFRs, four oxidative stress biomarkers (OSBs), and one kidney injury biomarker (NGAL) in urine samples collected from residents in e-waste disassembly and reference areas. Higher concentrations of NFRs and biomarkers were found in the urine of e-waste site residents, indicating that chronic exposure to NFRs can induce oxidative stress and kidney damage. Structure equation modeling revealed that oxidative stress mediated a significant portion of the effect of NFRs on NGAL in e-waste related people. Overall, this study suggests the long-term chronic exposure to NFRs can lead to oxidative stress and renal injury in humans, but the pathogenesis may be scenario-specific.
Article
Environmental Sciences
Alison G. Paquette, Samantha Lapehn, Sophie Freije, James MacDonald, Theo Bammler, Drew B. Day, Christine T. Loftus, Kurunthachalam Kannan, W. Alex Mason, Nicole R. Bush, Kaja Z. LeWinn, Daniel A. Enquobahrie, Carmen Marsit, Sheela Sathyanarayana
Summary: This study provides the first human transcriptomic assessment of PAHs in the placenta and identifies associations between prenatal PAH exposure and placental gene expression, shedding light on the mechanisms by which PAHs may disrupt placental function.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Biochemical Research Methods
Zhong-Min Li, Mathusa Lakuleswaran, Kurunthachalam Kannan
Summary: In this study, a method using liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed for the determination of various disinfectants, including BACs, ATMACs, DDACs, and QACs, in human serum and urine. The method involved the use of isotopically labelled internal standards and solid-phase extraction. Different LC columns were utilized for the separation of different compounds. The method showed good sensitivity and accuracy, and it was able to detect the presence of QACs and their metabolites in human serum and urine.
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
(2023)
Article
Environmental Sciences
Zorimar Rivera-Nunez, Carolyn W. Kinkade, Leena Khoury, Jessica Brunner, Hannah Murphy, Christina Wang, Kurunthachalam Kannan, Richard K. Miller, Thomas G. O'Connor, Emily S. Barrett
Summary: The study found that maternal serum levels of poly- and perfluoroalkyl substances (PFAS) are associated with sex steroid hormone levels during pregnancy. Specifically, PFHxS is associated with increased testosterone levels in male fetuses, while PFNA and PFDA are associated with increased free testosterone levels in male fetuses. For female fetuses, PFHxS is associated with increased levels of estradiol and estriol. No associations were found for PFOS and PFOA.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Abigail Gaylord, Emily S. Barrett, Sheela Sathyanarayana, Shanna H. Swan, Ruby H. N. Nguyen, Nicole R. Bush, Kecia Carroll, Drew B. Day, Kurunthachalam Kannank, Leonardo Trasande
Summary: This study investigated the influence of prenatal exposure to the endocrine disrupting chemical bisphenol A on childhood atopic disease. The results showed that there were inverse associations between first trimester bisphenol A concentration and food allergy, while second trimester bisphenol A concentration was positively associated with food allergy. Additionally, prenatal exposure to bisphenol S was found to increase the risk of asthma among males.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Wei Wang, Kurunthachalam Kannan
Summary: This study collected 72 single-use medical products of four categories from a hospital in New York State in 2015 and analyzed their migration of 10 phthalates in an ethanol/water mixture. The results showed that the leached phthalate concentration ranged from 0.04 to 54,600 μg, with DEHP being the major phthalate found in 99% of the samples. DEHP was also found in notable concentrations in products labeled as DEHP-free. The study calculated the direct exposure to phthalates from medical devices and first aid supplies, as well as dermal intake from creams/lotions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Henglin Zhang, You Wang, Huimin Zhu, Shaoyou Lu, Yu Wang, Jingchuan Xue, Tao Zhang, Kurunthachalam Kannan, Hongwen Sun
Summary: This study investigated the exposure of infants in South China to neonicotinoid insecticides (NEOs). The results showed that infants had detectable levels of NEOs in urine and blood samples, breast milk, infant formula, and tap water. The concentrations of specific NEOs varied in different samples, with dinotefuran and imidacloprid being the most abundant in urine, blood, breast milk, infant formula, and tap water. Older infants had higher NEO exposure than younger infants. Blood samples had higher concentrations of NEOs compared to urine samples, indicating that NEOs readily enter the bloodstream. Breast-fed infants had higher exposure levels than formula-fed infants. The study also found that external sources contributed to the majority of NEO exposure in infants.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Zhong-Min Li, Kurunthachalam Kannan
Summary: This study investigated the occurrence of synthetic chemicals including DPG, DTG, and TPG in indoor dust samples from 332 locations in 11 countries. DPG was detected in all dust samples, with varying concentrations among the countries. DPG accounted for over 87% of the total concentrations of the three compounds in all countries.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Zhong-Min Li, Kurunthachalam Kannan
Summary: A method using high-performance liquid chromatography-tandem mass spectrometry was developed for the quantification of Diphenylguanidine, 1,3-di-o-tolylguanidine, and 1,2,3-triphenylguanidine in human urine. The method had detection and quantification limits ranging from 0.002 to 0.02 ng/mL and 0.005 to 0.05 ng/mL, respectively. The method was applied to real human urine samples, revealing a detection frequency of 73% and a median concentration of 0.05 ng/mL for Diphenylguanidine in children's urine samples, and a detection frequency of 20% in adults' urine samples.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Fisheries
Bryanna N. Wargat, Douglas H. Adams, Maria Laura Habegger
Summary: This study quantified and compared the presence of melanin in tissue samples of leucistic and fully pigmented blacktip sharks Carcharhinus limbatus. The results supported the lack of melanin as the cause of leucistic coloration and evaluated the histological differences responsible for this phenomenon.
JOURNAL OF FISH BIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Paola Palacios-Barreto, Adan Fernando Mar-Silva, Natalia J. Bayona-Vasquez, Douglas H. Adams, Pindaro Diaz-Jaimes
Summary: This study obtained the mitochondrial genome sequence of the Brazilian cownose ray and found that it is closely related to the javanese cownose ray, rather than the reported steindachneri cownose ray. This new molecular data provides new insights into the phylogenetic relationships within the Rhinoptera genus and can be used for population genetic studies.
MOLECULAR BIOLOGY REPORTS
(2023)
Article
Ecology
Bryan S. Frazier, Elizabeth A. Vinyard, Andrew T. Fields, William B. Driggers, R. Dean Grubbs, Douglas H. Adams, J. Marcus Drymon, Jayne M. Gardiner, Jill M. Hendon, Eric Hoffmayer, Robert E. Hueter, R. J. David Wells, Tonya R. Wiley, David S. Portnoy
Summary: The age, growth, and maturity of bonnetheads inhabiting estuarine and coastal waters of the U.S. Gulf of Mexico were investigated. Two populations, the eastern GOM and western GOM, were examined based on population genetics study. The von Bertalanffy growth model provided the best fit to length-at-age data. The parameters were slightly different between the two populations, but the maximum observed age was similar.
ENVIRONMENTAL BIOLOGY OF FISHES
(2023)
Article
Engineering, Environmental
Vishal Midya, Cecilia Sara Alcala, Elza Rechtman, Jill K. Gregory, Kurunthachalam Kannan, Irva Hertz-Picciotto, Susan L. Teitelbaum, Chris Gennings, Maria J. Rosa, Damaskini Valvi
Summary: A study investigates the interactions between environmental chemicals (ECs) and their association with autism spectrum disorder (ASD). By combining weighted quantile sum regression and machine learning methods, two potential interactions between specific ECs and ASD diagnosis are identified.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Mengqi Yan, Hongkai Zhu, Haining Luo, Tao Zhang, Hongwen Sun, Kurunthachalam Kannan
Summary: This study analyzed urine samples collected from 12 cities in mainland China to determine the concentrations of volatile organic compounds (VOCs) and oxidative stress biomarkers. The results showed that VOC exposure primarily came from cooking, solvents, and vehicle emissions. Regional variations in VOC concentrations were observed, with higher levels found in North and South China. The study also revealed a positive correlation between most VOCs and oxidative stress markers, suggesting potential health risks associated with VOC exposure.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
