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Bulletin of Environmental Contamination and Toxicology

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https://www.readbyqxmd.com/read/28795203/multi-walled-carbon-nanotubes-reduce-toxicity-of-diphenhydramine-to-ceriodaphnia-dubia-in-water-and-sediment-exposures
#1
Mark H Myer, Marsha C Black
Multi-walled carbon nanotubes are adsorptive materials that have potential for remediation of organic contaminants in water. Sediment elutriate exposures were undertaken with Ceriodaphnia dubia to compare the toxic effects of diphenhydramine in the presence and absence of sediment and multi-walled carbon nanotubes. In both sediment and solution-only treatments, addition of 0.318 mg/g of carbon nanotubes significantly decreased 48-h mortality relative to control, with a 78.7%-90.1% reduction in treatments with nanotube-amended sediment and 40...
August 9, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28791442/co-exposure-of-freshwater-microalgae-to-tetrabromobisphenol-a-and-sulfadiazine-oxidative-stress-biomarker-responses-and-joint-toxicity-prediction
#2
Se Wang, Zhuang Wang, Mindong Chen, Hao Fang, Degao Wang
Combined toxicity and oxidative stress biomarker responses were determined for tetrabromobisphenol A (TBBPA) and sulfadiazine (SDZ) to the unicellular green alga Scenedesmus obliquus. Concentration-response analyses were performed for single toxicants and for mixtures containing TBBPA and SDZ with two different mixture ratios. The effect concentrations and the observed effects of the mixtures were compared to the predictions of the joint toxicity by the concentration addition (CA) model and independent action (IA) model...
August 9, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28785982/the-potential-use-of-vetiveria-zizanioides-for-the-phytoremediation-of-antimony-arsenic-and-their-co-contamination
#3
Nosheen Mirza, Hussani Mubarak, Li-Yuan Chai, Wang Yong, Muhammad Jamil Khan, Qudrat Ullah Khan, Muhammad Zaffar Hashmi, Umar Farooq, Rizwana Sarwar, Zhi-Hui Yang
Antimony (Sb) and arsenic (As) contaminations are the well reported and alarming issues of various contaminated smelting and mining sites all over the world, especially in China. The present hydroponic study was to assess the capacity of Vetiveria zizanioides for Sb, As and their interactive accumulations. The novelty of the present research is this that the potential of V. zizanioides for Sb and As alone and their interactive accumulation are unaddressed. This is the first report about the interactive co-accumulation of Sb and As in V...
August 7, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28780637/selected-organochlorines-in-human-blood-and-urine-in-the-south-of-the-russian-far-east
#4
Vasiliy Yu Tsygankov, Nadezhda K Khristoforova, Olga N Lukyanova, Margarita D Boyarova, Pavel F Kiku, Marina V Yarygina
The trace OCP concentrations, such as α-, β-, and γ-HCH, DDT and its metabolites (DDD and DDE) in blood and urine of residents from the south of the Russian Far East was revealed. A large range of OCPs was found in the urine: α- and γ-isomers of HCH, DDT and DDE. The only β-HCH was detected in the blood; this indicates its persistence and the difficulty of excretion this substance from the organism. The total trace OCP concentration, found in the biological fluids of residents of the south of the Russian Far East, providing further evidence that these organic contaminants persist in the environment...
August 5, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28780636/photoconversion-of-2-chloronaphthalene-in-water
#5
Chunli Kang, Siqi Bao, Baiyan Chen, Yubo Zhong, Dongmei Huang, Yuhan Wang, Honghai Xue, Tao Tian
The photoconversion of 2-chloronaphthalene (CN-2) in water in a simulated sunlight system was investigated. The photoconversion efficiency, photoproducts and mechanisms were inspected, and the effects of inorganic ions (NO3(-), NO2(-)) and fulvic acid (FA) were discussed. The results showed that CN-2 could be transformed in water under the irradiation. NO3(-) and NO2(-) promoted the photoconversion of CN-2 owing to ·OH generated by the photolysis of NO3(-) and NO2(-); FA at a lower concentration promoted the photoconversion, but it had an inhibition effect at a higher concentration...
August 5, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28776191/water-consumption-as-source-of-arsenic-chromium-and-mercury-in-children-living-in-rural-yucatan-mexico-blood-and-urine-levels
#6
F Arcega-Cabrera, L F Fargher, I Oceguera-Vargas, E Noreña-Barroso, L Yánez-Estrada, J Alvarado, L González, R Moo-Puc, N Pérez-Herrera, M Quesadas-Rojas, S Pérez-Medina
Studies investigating the correlation between metal content in water and metal levels in children are scarce worldwide, but especially in developing nations. Therefore, this study investigates the correlation between arsenic, chromium, and mercury concentrations in drinking and cooking water and in blood and urine samples collected from healthy and supposedly non-exposed children from a rural area in Yucatan, Mexico. Mercury in water shows concentrations above the recommended World Health Organization (WHO) value for drinking and cooking water...
August 4, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28776190/human-health-risks-assessment-associated-with-polychlorinated-biphenyls-pcbs-in-soil-from-different-contaminated-areas-of-mexico
#7
Iván N Pérez-Maldonado, Ángeles C Ochoa Martínez, Tania Ruíz-Vera, Sandra T Orta-García, José A Varela-Silva
Recent studies have documented environmental contamination by PCBs in soil from different areas in Mexico (industrial, mining, and urban sites). However, the real significance of that soil contamination has not been established. Therefore, the aim of this study was to perform a human health risk assessment (Monte Carlos simulation) to evaluate the probable toxic effects of soils contaminated with PCBs on children in four sites in Mexico. A high non-carcinogenic risk (total nHQ = 1.1E+01; if nHQ ≥1, hazardous health effects cannot be ruled out) was found in Alpuyeca, Morelos, Mexico...
August 3, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28776189/spatial-variability-of-cyanobacteria-and-heterotrophic-bacteria-in-lake-taihu-china
#8
Haifeng Qian, Tao Lu, Hao Song, Michel Lavoie, Jiahui Xu, Xiaoji Fan, Xiangliang Pan
Cyanobacterial blooms frequently occur in Lake Taihu (China), but the intertwined relationships between biotic and abiotic factors modulating the frequency and duration of the blooms remain enigmatic. To better understand the relationships between the key abiotic and biotic factors and cyanobacterial blooms, we measured the abundance and diversity of prokaryotic organisms by high-throughput sequencing, the abundance of key genes involved in microcystin production and nitrogen fixation or loss as well as several physicochemical parameters at several stations in Lake Taihu during a cyanobacterial bloom of Microcystis sp...
August 3, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28752180/the-difference-of-photosynthetic-responses-to-the-cadmium-stress-between-a-wild-soybean-glycine-soja-sieb-et-zucc-and-a-cultivated-soybean
#9
Zhongcai Xue, Huiyuan Gao
The effects of Cd on a halophyte of Doingying wild soybean (DY-03262) were studied by comparing it with a cultivated soybean (SN-11) via investigating photosynthetic activity, chlorophyll fluorescence and Cd concentrations in leaves after treatment with different concentrations of Cd (0, 50, and 100 μM) for 10 days. There were no significant differences in photosynthetic rate (PN), actual photochemical efficiency of PSII (ΦPSII), stomatal conductance (gs), and photochemical quenching (qP) between the both soybean species without Cd treatment, but they decreased greater in DY-03262 than that in SN-11 leaves after Cd treatment...
July 27, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28748329/impact-of-thiamethoxam-on-honey-bee-queen-apis-mellifera-carnica-reproductive-morphology-and-physiology
#10
Ivana Tlak Gajger, Martina Sakač, Aleš Gregorc
High honey bee losses around the world have been linked in part by the regular use of neonicotinoids in agriculture. In light of the current situation, the aim of this study was to investigate the effects of thiamethoxam on the development of the reproductive system and physiology in the honey bee queen. Two experimental groups of honey bee queen larvae were treated with thiamethoxam during artificial rearing, applied via artificial feed in two cycles. In the first rearing cycle, honey bee larvae received a single treatment dose (4...
July 26, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28725931/seasonal-trend-of-pahs-concentrations-in-farmed-mussels-from-the-coastal-areas-of-the-naples-italy
#11
Mauro Esposito, Monia Perugini, Sara Lambiase, Annamaria Conte, Loredana Baldi, Michele Amorena
This paper reports on the results about the chemical pollution pressure in the Gulf of Naples and nearby coastal areas. Farmed mussels were analysed for the presence of polycyclic aromatic hydrocarbons (PAHs). The results documented a decreasing trend in the PAHs levels respect to the past years. The Bay of Pozzuoli remains as the most contaminated site within the Lucrino area with the highest reported number of samples exceeding the benzo(a)pyrene and PAHs sum limits. All the samples with concentrations above the European regulatory limit were collected in the winter period illustrating a seasonal trend of PAHs distribution in mussels during the 4 years investigated...
July 19, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28717865/heavy-metal-concentrations-in-water-and-soil-along-the-hun-river-liaoning-china
#12
Kan Zhang, Fangli Su, Xianmin Liu, Zhi Song, Xue Feng
Water and soil samples were collected along the Hun River to study the concentrations of Cr, Cu and Zn during the dry season, medium season and wet season in 2013. The concentrations of Cr, Cu, and Zn in Hun River were 0.0010 to 0.1298, 0.0057 to 0.1533 and 0.0162 to 0.5004 mg/L, respectively. The concentrations of Cr, Cu, and Zn in soil from around the Dahuofang reservoir were 0.0033 to 0.2149, 0.0054 to 0.2218 and 0.0135 to 0.3544 mg/g, respectively. The results indicated that the concentrations of Cr, Cu and Zn in water from the Hun River and soil from around the Dahuofang reservoir were significantly different at different sample stations and seasons...
July 17, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28712016/a-survey-of-pesticide-accumulation-in-a-specialist-feeder-the-koala-phascolarctos-cinereus
#13
Caroline Marschner, Damien P Higgins, Mark B Krockenberger
To maintain profitability in Australia's agricultural and urban landscapes pesticides are used throughout the range of koala habitats. The koala is a specialist feeder, reliant on metabolic enzyme capacities to utilise a toxic diet of eucalypt leaves and is potentially prone to adverse effects when xenobiotic interactions between dietary and anthropogenic xenobiotics occur. The aim of this study was to investigate accumulation of frequently used pesticides in wild koalas in 4 areas of New South Wales and Queensland...
July 15, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28710527/assessment-of-surface-water-contamination-from-coalbed-methane-fracturing-derived-volatile-contaminants-in-sullivan-county-indiana-usa
#14
Nicholas Meszaros, Bikram Subedi, Tristan Stamets, Naima Shifa
There is a growing concern over the contamination of surface water and the associated environmental and public health consequences from the recent proliferation of hydraulic fracturing in the USA. Petroleum hydrocarbon-derived contaminants of concern [benzene, toluene, ethylbenzene, and xylenes (BTEX)] and various dissolved cations and anions were spatially determined in surface waters around 15 coalbed methane fracking wells in Sullivan County, IN, USA. At least one BTEX compound was detected in 69% of sampling sites (n = 13) and 23% of sampling sites were found to be contaminated with all of the BTEX compounds...
July 14, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28710526/exposure-effects-and-absorption-of-lead-in-american-woodcock-scolopax-minor-a-review
#15
REVIEW
Amanda D French, Warren C Conway, Jaclyn E Cañas-Carrell, David M Klein
Due to long term declines of American Woodcock (Scolopax minor) and widespread distribution of environmentally available lead (Pb) throughout their geographic range, it is important to assess if Pb exposure is a potential contributor to these declines. Woodcock are exposed to Pb through various environmental sources and are known to exhibit relatively high bone-Pb concentrations. Absorption of Pb by birds, and woodcock specifically, is not well understood. Some studies show that interactions among calcium, phosphorus, iron, zinc, and vitamin D levels may play an important role in Pb absorption...
July 14, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28698907/virtual-issue-1-oil-spill-research-in-the-bulletin-of-environmental-contamination-and-toxicology
#16
EDITORIAL
Mace G Barron
No abstract text is available yet for this article.
July 11, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28685221/differences-in-metal-accumulation-in-the-growing-shoot-tips-and-remaining-shoot-tissue-in-three-species-of-brown-seaweeds
#17
Rubén Villares, Emilio Carral, Carlos Carballeira
In this study we compared the accumulation of eight metals and two metalloids in the growing tips and the remaining shoot tissue of three species of brown seaweeds commonly used in biomonitoring studies (Fucus ceranoides, Fucus spiralis and Ascophyllum nodosum). Regression analysis of the data obtained showed that there was no statistically significant difference in accumulation in numerous cases; although most of the relationships were significant, many of the coefficients of determination were low. However, the concentrations of Mn and Zn in the growing tips were closely related to the concentrations in the rest of the tissue in all three species, possibly due to redistribution of these elements...
July 6, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28685220/effects-of-copper-oxide-nanoparticles-on-antioxidant-enzyme-activities-and-on-tissue-accumulation-of-oreochromis-niloticus
#18
Mustafa Tunçsoy, Servet Duran, Özcan Ay, Bedii Cicik, Cahit Erdem
Accumulation of copper oxide nanoparticles (CuO NPs) in gill, liver and muscle tissues of Oreochromis niloticus and its effects on superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) activities in gill and liver tissues were studied after exposing the fish to 20 µg/L Cu over 15 days. Copper levels and enzyme activities in tissues were determined using spectrophotometric (ICP-AES and UV) techniques respectively. No mortality was observed during the experiments. Copper levels increased in gill and liver tissues of O...
July 6, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28681163/bioaccumulation-of-polychlorinated-biphenyls-pcbs-in-atlantic-sea-bream-archosargus-rhomboidalis-from-kingston-harbour-jamaica
#19
Ann-Tenneil O'Connor, Dwight Robinson, Tara P Dasgupta, Aaron T Fisk, Ken G Drouillard
Multiple sizes of Sea bream were collected from Kingston Harbour, Jamaica, to assess steady state bioaccumulation of polychlorinated biphenyls (PCBs) in a tropical fish. Sea beam fork lengths ranged from 7.3 to 21.5 cm (n = 36 fish) and tissue lipids decreased with body length. Larger fish had lower δ(13)C isotopes compared to smaller fish, suggesting a change in diet. Linear regressions showed no differences in lipid equivalent sum PCB concentrations with size. However, differences in individual congener bioaccumulation trajectories occurred...
July 5, 2017: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28681162/copper-based-aquatic-algaecide-adsorption-and-accumulation-kinetics-influence-of-exposure-concentration-and-duration-for-controlling-the-cyanobacterium-lyngbya-wollei
#20
West M Bishop, Clayton L Lynch, Ben E Willis, W Gregory Cope
Filamentous mat-forming cyanobacteria are increasingly impairing uses of freshwater resources. To effectively manage, a better understanding of control measures is needed. Copper (Cu)-based algaecide formulations are often applied to reactively control nuisance cyanobacterial blooms. This laboratory research assessed typical field exposure scenarios for the ability of Cu to partition to, and accumulate in Lyngbya wollei. Exposure factors (Cu concentration × duration) of 4, 8, 16, 24, 32 h were tested across three aqueous Cu concentrations (1, 2, 4 ppm)...
July 5, 2017: Bulletin of Environmental Contamination and Toxicology
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