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Archives of Environmental Contamination and Toxicology

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https://www.readbyqxmd.com/read/29150771/occurrence-and-partition-of-perfluorinated-compounds-pfcs-in-water-and-sediment-from-the-songhua-river-china
#1
Weihua Dong, Baolin Liu, Yang Song, Hong Zhang, Juying Li, Xiaoyu Cui
This study provided the first evidence that perfluorinated compounds (PFCs) were widely detected in the Songhua River, China. Seventeen surface water and sediment samples were collected and analyzed for the determination of 14 PFCs. The total concentrations of PFCs (Σ PFCs) ranged from 0.143 to 1.41 ng L(-1) in water samples. Perfluorooctanoic acid (PFOA) was detected with the highest detection frequency (%) ranging from below LOQ to 0.678 ng L(-1). Σ PFCs were relatively low in sediments, and only four individual homologues were detected...
November 17, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29147789/erythrocyte-nuclear-abnormalities-in-astyanax-lacustris-in-response-to-landscape-characteristics-in-two-neotropical-streams
#2
Lucilene Finoto Viana, Yzel Rondon Súarez, Claudia Andrea Lima Cardoso, Julio César Jut Solórzano, Bruno do Amaral Crispim, Alexeia Barufatti Grisolia, Sidnei Eduardo Lima-Junior
The objective of this research was to evaluate land use and occupation in the landscape surrounding two neotropical streams of the Upper Paraná River in Brazil and to investigate if the water from these streams induces erythrocyte nuclear abnormalities in Astyanax lacustris. We observed that the areas surrounding the streams are predominantly used for agricultural purposes (73.46% of the total area), followed by buildings (15.21%). Only 8.78% of the area consisted of forest fragments. We observed higher frequencies of micronuclei in erythrocytes of A...
November 17, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29119204/benzalkonium-chloride-and-anticancer-drugs-in-binary-mixtures-reproductive-toxicity-and-genotoxicity-in-the-freshwater-crustacean-ceriodaphnia-dubia
#3
Chiara Russo, Michael Kundi, Margherita Lavorgna, Alfredo Parrella, Marina Isidori
Benzalkonium chloride (BAC) is a cationic surfactant commonly used as a disinfectant. Its ubiquitous nature is the result of high usage and frequent discharge into the environment and evidence of interaction with numerous contaminants, such as pharmaceutical active compound residues. Anticancer drugs, among these compounds, are able to exert eco-genotoxic effects at sub ng-µg/L. The purpose of this study was to assess the reproductive toxicity and the genotoxicity of 5-fluorouracil (5-FU), cisplatin (CDDP), etoposide (ET), and imatinib mesylate (IM)-binary mixtures combined with BAC in Ceriodaphnia dubia...
November 8, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29080016/particle-associated-polycyclic-aromatic-hydrocarbons-pahs-in-the-atmosphere-of-hefei-china-levels-characterizations-and-health-risks
#4
Ruoyu Hu, Guijian Liu, Hong Zhang, Huaqin Xue, Xin Wang, Ruwei Wang
Airborne PM2.5 and PM10 samples were collected in summertime (August 2015) and wintertime (December 2015-January 2016) in an industrial complex area in Hefei, China. The average concentrations of PM2.5 and PM10 (90.5 and 114.5 μg/m(3), respectively) were higher than the regulated levels of China National Ambient Air Quality Standard (grade I) and the WHO Ambient (outdoor) Air Quality and Health Guideline Value. Seasonal variations in PM2.5/PM10 indicated that the secondary sources of particulate matters, formed by gas-to-particle conversion, were enhanced in summer due to longer time of solar radiation and higher temperature...
October 27, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29080015/expression-of-xenobiotic-biomarkers-cyp1-family-in-preputial-tissue-of-patients-with-hypospadias-and-phimosis-and-its-association-with-dna-methylation-level-of-srd5a2-minimal-promoter
#5
Seiichiroh Ohsako, Toshiki Aiba, Mami Miyado, Maki Fukami, Tsutomu Ogata, Yutaro Hayashi, Kentaro Mizuno, Yoshiyuki Kojima
Several epidemiological studies have suggested that the incidence of male reproductive organ malformations, including hypospadias or cryptorchidism, has increased due to fetal-stage exposure to environmental pollutants. However, the association of chemical exposure with the expression of target regulatory genes in the tissues of patients has not yet been reported. Because experimental approaches or clinical trials in human studies are limited, especially those using fetal and/or infants, it is difficult to obtain clear physiological evidence of mechanisms underlying male reproductive malformations...
October 27, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29075807/assessment-of-polycyclic-aromatic-hydrocarbons-in-school-playground-soils-in-urban-gwangju-south-korea
#6
Mohammad Nazrul Islam, Young-Tae Jo, Seon-Yong Chung, Jeong-Hun Park
Soil samples from school playground of Gwangju City were analyzed for 16 polycyclic aromatic hydrocarbons (PAHs), and the soil contamination status and the potential cancer risk for students and adults were investigated. Soil samples were collected from 57 sites from 5 districts of Gwangju City in the summer of 2013. Regardless of the sampling site, the ∑PAHs concentrations ranged from 13.2 to 145.5 ng/g (mean 51.2 ng/g). Four and five-ring PAHs were predominant in the soil samples while the fraction of two-ring PAHs was the lowest...
October 26, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29071367/age-related-patterns-in-trace-element-content-vary-between-bone-and-teeth-of-the-european-roe-deer-capreolus-capreolus
#7
Jan Demesko, Janusz Markowski, Mirosława Słaba, Janusz Hejduk, Piotr Minias
Game animals, such as the roe deer (Capreolus capreolus), have long been used as bioindicators of environmental contamination. Most ecotoxicological research on ungulates has focused on trace element content in soft tissues and antlers. Also, only fragmentary information exists about whether and how trace element concentrations vary with the age of wild-living animals and whether these age-related patterns are similar for different types of tissues. The purpose of this study was to measure concentrations of seven trace metals (barium, copper, iron, lead, manganese, strontium, zinc) and fluoride in bone and teeth of roe deer and to determine whether significant variation is evident with individual age...
October 25, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29063946/the-effect-of-nitric-oxide-pollution-on-oxidative-stress-in-pregnant-women-living-in-durban-south-africa
#8
Samantha M Anderson, Rajen N Naidoo, Prithiksha Ramkaran, Alisa Phulukdaree, Sheena Muttoo, Kareshma Asharam, Anil A Chuturgoon
The purpose of the study was to evaluate the effect nitric oxide (NO x ) pollution had on maternal serum 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-OHdG) levels and neonatal outcomes in pregnant women living in Durban, South Africa (SA). Women, in their third trimester with singleton pregnancies, were recruited from the heavily industrialised south (n = 225) and less industrialised north (n = 152). Biomarker levels of serum 8-OHdG concentrations were analysed, and the women were genotyped for glutathione-S-transferases pi 1 (GSTP1) and glutathione-S-transferases mu 1 (GSTM1) polymorphisms...
October 24, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29058062/comparison-of-dissolved-nickel-and-nickel-nanoparticles-toxicity-in-larval-zebrafish-in-terms-of-gene-expression-and-dna-damage
#9
Halis Boran, Savaş Şaffak
With the use of nanoparticles (NPs) in many industrial activities and consumer products, it is important to evaluate the effects of their release into the environment. Metal NPs (e.g., Ni-NPs or Cu-NPs) can release metal ions that are toxic to aquatic organisms; however, whether the toxicity is from metal ions rather than unique "nano-scale" effects of the NPs is unresolved. This research investigated Ni-NP toxicity in zebrafish Danio rerio larvae to clarify whether toxic effects are attributable to release of Ni ions...
October 22, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29058061/current-state-distribution-and-sources-of-phthalate-esters-and-organophosphate-esters-in-soils-of-the-three-gorges-reservoir-region-china
#10
Ming-Jing He, Ting Yang, Zhi-Hao Yang, Hong Zhou, Shi-Qiang Wei
Phthalate esters (PAEs) and organophosphate esters (OPEs) were identified and quantified in surface soils from farmland and riparian areas of the Three Gorges Reservoir (TGR), western China. Generally, the mean values of PAEs and OPEs were 618 and 266 ng/g dry weight (dw) in farmland soil and 560 and 499 ng/g dw in riparian soil, respectively. The occurrence of OPEs should be regarded as a risk factor in the TGR region. Analogous spatial distribution patterns for PAEs were observed with higher concentrations observed at site WZ in both types of soil, which might relate to the anthropogenic activities...
October 20, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29058060/effects-of-seasonal-changes-on-the-toxic-impacts-of-oil-sands-process-affected-water-on-daphnia-magna
#11
Ebrahim Lari, Dylan Steinkey, Greg G Pyle
Oil sands process-affected water (OSPW), which can be potentially toxic to aquatic biota, is a major by-product of bitumen mining in northern Alberta. The effects of environmental factors on the toxicity of OSPW are understudied. In the present study, the impacts of seasonal changes in water quality on the toxic effects of OSPW (1 and 10%) on Daphnia magna was examined. Animals were chronically exposed to OSPW under conditions that represented water quality of a cold or warm seasonal condition. At each seasonal scenario survival, growth (length and mass) and reproduction of exposed D...
October 20, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29052740/short-term-effects-of-the-anti-sea-lice-therapeutant-emamectin-benzoate-on-clam-worms-nereis-virens
#12
G J McBriarty, K A Kidd, L E Burridge
The polychaete Nereis virens occurs commonly in marine sediments, is widely distributed, and is a popular bait species, as well as a potential replacement for wild-caught fish in commercial fish feed preparations. It is being considered as a potential co-extractive species for culture in integrated multi-trophic aquaculture operations. However, it is not known whether pesticides or drugs used to treat sea lice on farmed salmon, such as emamectin benzoate (EB), would adversely affect cultured or wild worms, because these compounds may persist in the environment...
October 20, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29052739/spatial-distribution-of-metals-and-associated-risks-in-surface-sediments-along-a-typical-urban-river-gradient-in-the-beijing-region
#13
Yueqiu Zhang, Shiliang Liu, Fangyan Cheng, Ana Coxixo, Xiaoyun Hou, Zhenyao Shen, Lei Chen
Surface sediments from Beiyun River located in the rapidly urbanized Beijing metropolis were collected and analyzed for heavy metals (As, Cd, Cr, Cu, Mn, Ni, Pb, and Zn) to investigate their spatial distribution pattern, ecotoxicology and source identification. Results indicated the average heavy metal concentrations of Cd, Cr, Cu, Pb, and Zn were approximately 4, 2, 3, 2, and 4 times higher than their background values. Spatially, we found the concentrations of heavy metals made significant change in four sections along urbanized river gradients...
October 20, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29051999/comparative-early-life-stage-toxicity-of-the-african-clawed-frog-xenopus-laevis-following-exposure-to-selected-herbicide-formulations-applied-to-eradicate-alien-plants-in-south-africa
#14
Oluwaseun O Babalola, J H Van Wyk
The rise in pesticides application has increased the need for better understanding of their ecological impacts. The global amphibian declines, for example, have been positively correlated with pesticides use. The differential susceptibility in the developmental stages of amphibians to chemical substances are still largely unknown. We examined the 96-h differential toxicity responses of embryos, premetamorphic and transitional larval stage of Xenopus laevis, to six formulated aquatic herbicide products containing the active ingredients of diquat dibromide (Midstream), glufosinate ammonium (Basta), imazapyr (Arsenal), and three glyphosate formulations (Roundup, Kilo Max, and Environ Glyphosate)...
October 20, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29051998/the-effect-of-bisphenol-a-on-growth-morphology-lipid-peroxidation-antioxidant-enzyme-activity-and-ps-ii-in-cylindrospermopsis-raciborskii-and-scenedesmus-quadricauda
#15
Rong Xiang, Junqiong Shi, Yi Yu, Hongbo Zhang, Congcong Dong, Yanjun Yang, Zhongxing Wu
To investigate the effect of bisphenol A (BPA) on Cylindrospermopsis raciborskii (Cyanobacteria) and Scenedesmus quadricauda (Chlorophyta), we grew the two species at BPA concentrations of 0, 0.1, 1, 2, 5, 10, and 20 mg/L and examined their growth, lipid peroxidation, antioxidant enzyme activity, and chlorophyll a fluorescence. The 96-h EC50 values (effective concentration causing 50% growth inhibition) for BPA in C. raciborskii and S. quadricauda were 9.663 ± 0.047, and 13.233 ± 0.069 mg/L, respectively...
October 19, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29043390/p-nitrophenyl-acetate-esterase-activity-and-cortisol-as-biomarkers-of-metal-pollution-in-blood-of-olive-ridley-turtles-lepidochelys-olivacea
#16
Adriana A Cortés-Gómez, Asta Tvarijonaviciute, Mariana Teles, Rafaela Cuenca, Gisela Fuentes-Mascorro, Diego Romero
This study was designed to determine the concentrations of p-nitrophenyl acetate esterase activity (EA) and cortisol in serum of marine Olive Ridley turtles (Lepidochelys olivacea) from a Mexican Pacific population ("La Escobilla" beach) and to evaluate the possible relationship of inorganic elements with these biomarkers. EA, cortisol, and selected chemical elements (Cd, Pb, Ti, Sr, Se, Al, As, and Zn) were measured in the blood of 44 sea turtles from the Eastern Pacific (Southeast Mexico). Serum EA ranged from 0...
October 17, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/29043389/biomagnification-of-mercury-in-fish-from-two-gold-mining-impacted-tropical-marshes-in-northern-colombia
#17
José Luis Marrugo-Negrete, Javier Alonso Ruiz-Guzmán, Ana Carolina Ruiz-Fernández
Total mercury concentrations (T-Hg) and stable isotope ratios (δ(15)N and δ(13)C) were analyzed in the muscle of fish, collected at two marshes impacted by gold mining in Northern Colombia, to evaluate the seasonal and spatial behavior of these variables and mercury biomagnification based on their relationship with δ(15)N ratios in the fish. There was not significant (p > 0.05) seasonal differences (dry and rainy season) in δ(15)N and δ(13)C values in none marsh, suggesting that these fish species keep a similar feed pattern within each marsh along the year...
October 17, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28975388/metal-concentrations-in-eurasian-eagle-owl-pellets-as-a-function-of-reproductive-variables-in-korea
#18
Dong-Man Shin, Jong-Min Oh, Jungsoo Kim
Eight metals were analyzed in the pellet of Eurasian eagle owls (Bubo bubo) breeding in Korea: Paju, Ganghwa, Gimpo, and Sihwa, Gyeonggi-do (N = 15, respectively). Except for cadmium (Cd), concentrations of all metals differed among sites (ANOVA, p < 0.001); Sihwa had relatively higher metal concentrations compared with other sites. Clutch size did not differ among the four sites. However, Sihwa had the greatest nesting success and number of fledglings (per hatchlings and laid egg) and highest mean weight of diet...
October 3, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28965150/the-extent-of-the-impact-of-a-fluorochemical-industrial-park-in-eastern-china-on-adjacent-rural-areas
#19
Guo-Hui Lu, Xing-Chun Jiao, Hai-Tao Piao, Xiao-Chun Wang, Shu Chen, Ke-Yan Tan, Nan Gai, Xiao-Cai Yin, Yong-Liang Yang, Jing Pan
High levels of perfluoroalkyl substances (PFASs) were observed in rural areas near a fluorochemical industrial park (FCIP) in the Yangtze River Delta region. The concentrations of total PFAS (∑PFASs) in soil, surface water, groundwater, and rainwater were in the range of 0.6-64.6 ng/g dry weight, 15.6-480.9, 4.8-614.6, and 13.4-542.2 ng/L, respectively. PFASs in rainwater and groundwater were higher than in surface water. The influence of the FCIP on rural soils extended to a distance of approximately 4 km based on the changes in PFAS compositions...
September 30, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28956097/determination-of-mercury-daily-intake-and-hair-to-blood-mercury-concentration-ratio-in-people-resident-of-the-coast-of-the-persian-gulf-iran
#20
Narjes Okati, Abbas Esmaili-Sari
The objectives of this study were to understand the mercury daily intake and hair-to-blood mercury ratio in fishermen and non-fishermen families in the coast of the Persian Gulf in Iran. The mean mercury concentration in the hair of fishermen and non-fishermen families was 5.76 and 2.27 μg/g, respectively. The mean mercury concentrations of RBCs were obtained for fishermen families and non-fishermen families: 35.96 and 17.18 μg/L, respectively. Hair mercury concentrations in 17% of people were higher than 10 μg/g, the No Observed Adverse Effects Level set by the World Health Organization...
September 27, 2017: Archives of Environmental Contamination and Toxicology
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