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Archives of Environmental Contamination and Toxicology

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https://read.qxmd.com/read/30770948/influence-of-land-use-and-cover-on-toxicogenetic-potential-of-surface-water-from-central-west-brazilian-rivers
#1
Juliana Caroline Vivian Sposito, Luiza Flavia Veiga Francisco, Bruno do Amaral Crispim, Fabiana Gomes da Silva Dantas, Jéssica Pereira de Souza, Lucilene Finoto Viana, Julio César Jut Solórzano, Kelly Mari Pires de Oliveira, Alexeia Barufatti
The objective of this study was to evaluate toxicogenetic potential of surface water samples from rivers of center-west Brazil and analyze the influence of land use and cover and physicochemical parameters in genetic damage. Samples were collected during winter (June) and summer (November) at sampling sites from Dourados and Brilhante Rivers (Mato Grosso do Sul/Brazil). The toxicogenetic variables, including chromosomal alterations, micronuclei, and mitotic index, were analyzed in meristematic cells of Allium cepa; and micronuclei, nuclear abnormalities, and DNA strand breaks (arbitrary units, AUT ) were analyzed in erythrocytes of Astyanax lacustris...
February 15, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30734087/element-concentrations-in-tree-swallows-tachycineta-bicolor-from-the-u-s-and-binational-great-lakes-areas-of-concern
#2
Thomas W Custer, Christine M Custer, Paul M Dummer, Diana Goldberg, J Christian Franson
Selected elements were targeted in state Remedial Action Plans as one group of chemicals affecting the Beneficial Use Impairments of Great Lakes Areas of Concern (AOCs). Livers of nestling tree swallows, Tachycineta bicolor, were harvested from 76 sites in the Great Lakes, which included multiple sites at 27 AOCs and 12 reference sites from 2010 to 2015, and were analyzed for 21 elements. Mercury concentrations were at background levels at all sites. Elevated cadmium (Cd) concentrations were associated with industry...
February 7, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30726505/impact-of-long-term-exposure-to-17%C3%AE-ethinylestradiol-in-the-live-bearing-fish-heterandria-formosa
#3
Latonya M Jackson, Paul L Klerks
17α-ethinylestradiol (EE2) is a potent synthetic estrogen that is routinely detected in aquatic ecosystems and exhibits estrogenic activity. Acute and chronic toxicity have been described for oviparous and ovoviviparous fish species; however, no information is available on the impacts of EE2 on viviparous, matrotrophic fish despite their ecological importance. The present study investigated the consequences of long-term EE2 exposure in the least killifish (Heterandria formosa). Effects on growth, time-to-sexual maturity, fecundity, and offspring survival were examined in an 8-month, life-cycle experiment...
February 6, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30671628/role-of-natural-flocculation-in-eliminating-toxic-metals
#4
REVIEW
M Heidari
Metals as the most common environmental pollutants derive from different sources and have far-reaching harmful impacts on flora, fauna and human health. Moreover, metals cause irreversible damages to marine ecosystems. Estuaries are most productive ecosystems for living creatures and act as a transporting corridor for exchanging materials from river to water bodies including oceans, seas and lakes. One of the most important processes in this region is flocculation. Not only does flocculation process convert a huge percentage of metals from dissolved phase to particulate phase in providing micronutrients to aquatic organisms, more importantly, but it also eliminates metals from aquatic ecosystems and gives aid to the pollution of water bodies to be on the decrease...
January 22, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30661090/effect-of-landscape-changes-on-water-quality-and-health-status-of-heptapterus-mustelinus-siluriformes-heptapteridae
#5
N Vreys, M V Amé, I Filippi, J Cazenave, M E Valdés, M A Bistoni
Substances derived from anthropogenic activities induce changes in the physical and chemical characteristics of the aquatic environment. Physicochemical and biological studies are necessary to understand how changes in landscape affect the health of the aquatic environment. The main goal of this study was to evaluate how the landscape at different spatial scales affects (1) water quality and (2) the health status of Heptapterus mustelinus, based on several biomarkers. During the dry season, individuals were caught in three sites with different degrees of anthropogenic activity...
January 19, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30652214/metals-uptake-from-particulate-matter-through-foliar-transfer-and-their-impact-on-antioxidant-enzymes-activity-of-s-robusta-in-a-tropical-forest-west-bengal-india
#6
Dipti Karmakar, Pratap Kumar Padhy
Particulate matters deposition on the leaves of S. robusta were investigated during three different seasons in two tropical forests: Barjora forest, situated adjacent to heavy pollution sources, and the control, Ballavpur Wildlife Sanctuary, West Bengal, India. The purpose of this study is to measure the dust fall and foliar transfer of heavy metals (viz., Pb, Cd, Cu, Cr, Fe, Ni, Zn, and Mn) and antioxidant enzyme activities (peroxidase, catalase) in S. robusta, including the measurement of heavy metals present in the suspended particulate matter in ambient air...
January 16, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30637461/distribution-toxic-potential-and-influence-of-land-use-on-conventional-and-emerging-contaminants-in-urban-stormwater-pond-sediments
#7
Judy L Crane
This study examined the distribution and toxic potential of conventional and emerging contaminants in composite sediment samples from 15 stormwater ponds in the Minneapolis-St. Paul, MN metropolitan area. Previously, coal tar-based sealants were shown to be a major source of polycyclic aromatic hydrocarbons to these ponds, and concentrations of carcinogenic benzo[a]pyrene (B[a]P) equivalents were influencing management options about pond maintenance. For the second component of this study, a complex mixture of 13 metal(loid)s, 4-nonylphenols, 8 brominated diphenyl ethers (BDEs), and total polybrominated diphenyl ethers (PBDEs) were detected in all surficial samples...
January 14, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30631905/multipotential-toxic-metals-accumulated-in-urban-soil-and-street-dust-from-xining-city-nw-china-spatial-occurrences-sources-and-health-risks
#8
Meng Zhang, Xiaoping Li, Rui Yang, Jiwen Wang, Yuwei Ai, Yu Gao, Yuchao Zhang, Xu Zhang, Xiangyang Yan, Bin Liu, Hongtao Yu
A total of 155 urban soil and 157 dust samples were collected from Xining city (NW, China) with the objective to systematically investigate the spatial occurrences, sources, and health risk status of potential toxic metals (PTMs) bound in urban soil and street dust. Results established by Geographic Information System tools with inverse distance weighted interpolation technique indicated that the spatial status of 24 multi-PTMs varied with their concentration levels in urban soils and street dusts in monitored local areas...
January 10, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30623199/absence-of-pcb-hot-spot-effect-in-walleye-sander-vitreus-from-lower-green-bay-of-lake-michigan
#9
Charles P Madenjian, Daniel J Dembkowski, Daniel A Isermann, Stuart A Batterman, Sergei M Chernyak, Stewart F Cogswell, Mark E Holey
Under certain conditions, polychlorinated biphenyl (PCB) concentration in individuals of one sex of an adult fish population may exceed that of the other sex by more than a factor of two. This phenomenon, known as the PCB hot spot effect, has been postulated to be contingent upon the following two conditions: (1) presence of a PCB hot spot in the bottom sediments of the aquatic ecosystem, such that prey PCB concentrations in the hot spot region are substantially higher than prey PCB concentrations in locations distant from the hot spot, and (2) habitat use varying between the sexes, such that individuals of one sex inhabit the hot spot region to a considerably greater degree than individuals of the other sex...
January 8, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30623198/persistent-organic-pollutants-in-livers-and-hg-in-feathers-of-neotropic-cormorants-phalacrocorax-brasilianus-from-the-trinity-river-watershed-texas-usa
#10
Christopher Sandoval, Miguel A Mora, Jose Sericano, Raquel R Rech
The Trinity River (Texas, USA) has been historically known as a polluted river because of its proximity to the Dallas-Fort Worth area and because of known discharges of sewage and agricultural irrigation waters to the river. Surprisingly, there are no studies regarding the presence of legacy contaminants in the river and their impacts to wildlife. The objectives of this study were to determine accumulation and potential impacts of persistent organic pollutants, such as organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), and polybrominated diphenyl ethers (PBDEs), on Neotropic cormorants (Phalacrocorax brasilianus) nesting along the Trinity River...
January 8, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30617606/bayesian-hierarchical-models-as-tools-to-evaluate-the-association-between-groundwater-quality-and-the-occurrence-of-type-2-diabetes-in-rural-saskatchewan-canada
#11
Lianne McLeod, Lalita Bharadwaj, Tasha Y Epp, Cheryl L Waldner
There is growing interest in the role of environmental exposures in the development of diabetes. Previous studies in rural Saskatchewan have raised concerns over drinking water contaminants, including arsenic, which has been identified as a possible risk factor for diabetes. Using administrative health and water-quality surveillance data from rural Saskatchewan, an ecological study design was used to investigate associations between concentrations of arsenic, water health standards and aesthetic objectives, and the incidence and prevalence of diabetes...
January 7, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30610254/temporal-and-spatial-distributions-of-bisphenol-a-in-marine-and-freshwaters-in-turkey
#12
Koray Ozhan, Emel Kocaman
Bisphenol A (BPA), a chemical component used in the manufacture of plastics, is commonly introduced to and detected in aquatic environments. This is the first study conducted to understand the distribution of BPA in the marine and freshwaters of Turkey. The purpose of this study is to report BPA concentrations measured from a time-series conducted in coastal waters of Erdemli and regional rivers located in the northeastern Mediterranean region. Furthermore, seawater samples obtained from other Turkish coastal areas-The Black Sea, Bosphorus, Sea of Marmara, and the Mediterranean Sea-also were investigated to gain a better understanding of regional and seasonal variations of BPA concentrations in Turkish Seas...
January 4, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30610253/distribution-of-black-carbon-in-topsoils-of-the-northeastern-qinghai-tibet-plateau-under-natural-and-anthropogenic-influences
#13
Xiuyun Min, Jun Wu, Jian Lu, Xiaohu Wen, Chunliang Gao, Leiming Li
Black carbon (BC), ubiquitous in soils, plays an important role in global carbon cycles, the radiative heat balance of the Earth, pollutant fate, emissions of greenhouse gas, soil fertility, soil microbial community, and ecosystem stability. However, information on BC in topsoils of the northeastern Qinghai-Tibet Plateau is limited. Therefore, this study performed field sampling and analyzed contents of total BC and soot BC in topsoils. The results indicated that the contents of total BC in all soil samples ranged from 0...
January 4, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30607445/oxidative-and-cellular-metabolic-stress-of-fish-an-appealing-tool-for-biomonitoring-of-metal-contamination-in-the-kolkata-wetland-a-ramsar-site
#14
Neeraj Kumar, K K Krishnani, Narendra Pratap Singh
The present study delineate the various biochemical and histopathological tool to evaluate as strong biomarker in the field condition for detection of the least and maximize level of pollution and contamination. We have collected Labeo rohita from 13 different sites from East Kolkata wetland to determine biochemical and histopathological status to analyse metal contamination in the significant biological hot spot EKW. The biochemical marker as antioxidative status, i.e., catalase, superoxide dismutase (SOD), and glutathione-S-transferase (GST) in liver and gill, were remarkably higher (p < 0...
January 3, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30600339/assessment-of-metal-pollution-its-potential-health-risks-and-origin-in-different-land-use-types-in-zhuhai-city-china
#15
Zuobing Liang, Lei Gao, Xinfeng Zhao, Jianyao Chen, Zhenglan Xie, Shaoheng Li, Rui Li, Zhigang Yang
The purpose of this study was to evaluate the current status of metal concentrations in soil from Zhuhai City. We detected the concentrations of eight metal elements in 67 topsoil samples collected from three typical land use types (water source land, n = 27; industrial land, n = 25; and farmland, n = 15) in Zhuhai. Multivariate geostatistical analyses indicated that the concentrations of Cu, Zn, and Cd may have originated from anthropogenic sources, whereas Pb and As mostly originated from natural sources...
January 1, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30600338/organochlorines-contaminants-in-eggs-of-hawksbill-eretmochelys-imbricata-and-green-sea-turtles-chelonia-mydas-from-mexico-coast
#16
Patricia I Salvarani, Fernando Morgado, Luis R Vieira, Jaime Rendón-von Osten
The investigation of organochlorine pesticides (OCPs) levels in sea turtles is an important issue in conservation research, due to the harmful effects of these chemicals. In the present study, OCPs concentrations were determined in the eggs of two sea turtle species (Eretmochelys imbricata and Chelonia mydas) collected from the Punta Xen and Isla Aguada (Mexican coast) in 2014 and 2015. Concentrations of 20 OCPs were analysed, including isomers of hexachlorocyclohexane, aldrin, chlordanes, endosulfans, methoxychlor, DDTs, and heptachlor...
January 1, 2019: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30569210/arsenic-exposure-and-effects-in-humans-a-mini-review-in-brazil
#17
REVIEW
Annaliza Carvalho Meneguelli de Souza, Marcelo Gomes de Almeida, Inácio Abreu Pestana, Cristina Maria Magalhães de Souza
Arsenic (As) is widely studied in several countries due to its toxicity to biota in the environment. Arsenic sources may be natural or anthropogenic, and the mobility of the element is ruled by physicochemical conditions that also define the dominant As species in the environment. Arsenic levels are evaluated in various abiotic and biotic environmental samples. The highest As levels are observed in sediment, from where it may be mobilized into the aquifers. This article reviews studies about As in the world but with emphasis on studies performed in Brazil, a country where continental water bodies are a common geographic feature...
December 19, 2018: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30564852/temporal-and-spatial-distribution-of-mercury-in-gulls-eggs-from-the-iberian-peninsula
#18
M Glória Pereira, Alan Lawlor, Albert Bertolero, Sergi Díez, Richard F Shore, Silvia Lacorte
We examined how coastal mercury contamination varied spatially and temporally across the Iberian Peninsula by measuring mercury concentrations in the eggs of the sentinel biomonitor yellow-legged gull (Larus michahellis). Samples were collected from eight colonies that ranged from the Atlantic across the south and northern areas of the Mediterranean. We also measured Hg residues in eggs of the one of the most endangered gull species in the world, the Audouin's gull (Larus audouinii) from the Ebro Delta, where colonies of yellow-legged and Audouin's gull co-occur...
December 18, 2018: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30536038/mercury-concentrations-in-sentinel-fish-exposed-to-contaminated-sediments-under-a-natural-recovery-strategy-within-the-st-lawrence-river-area-of-concern-at-cornwall-ontario-canada
#19
Dominique Lapointe, Jeffrey J Ridal
Legacy mercury (Hg) sediment deposits are a long-term issue within the St. Lawrence River (Cornwall) area of concern with three depositional areas along the Cornwall, ON waterfront containing sediments that exceed the Ontario Sediment Quality Guidelines for Hg. Assessing the bioavailability of these Hg-contaminated sediments plays a crucial role in evaluating the effectiveness of the Cornwall Sediment Strategy based on a natural recovery approach. We collected specimens of fallfish (Semotilus corporalis), round goby (Neogobius melanostomus), and yellow perch (Perca flavescens) to assess spatial and temporal trends of Hg concentrations in various areas along the Cornwall waterfront, including zones of contaminated sediments and non-contaminated reference sites...
December 7, 2018: Archives of Environmental Contamination and Toxicology
https://read.qxmd.com/read/30515647/poly-and-perfluoroalkyl-substances-in-runoff-water-and-wastewater-sampled-at-a-firefighter-training-area
#20
Xavier Dauchy, Virginie Boiteux, Adeline Colin, Cristina Bach, Christophe Rosin, Jean-François Munoz
Per- and polyfluoroalkyl substances (PFASs) are key ingredients of firefighting foams designed to suppress fires involving flammable and combustible liquids. Such foams are used by firefighters during fire training at dedicated sites. Because PFASs are very persistent chemicals, substantial soil and groundwater contamination has been observed in the vicinity of firefighter training areas. However, very few data are available on PFAS contamination of wastewater and runoff water on such sites. The purpose of this study was to evaluate the occurrence of more than 50 PFASs in 43 water samples (effluent from a wastewater treatment plant (WWTP), lagoon, runoff water, and wastewater drained from firefighter training areas) collected from a large firefighter training site, using target and suspect screening...
December 4, 2018: Archives of Environmental Contamination and Toxicology
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