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Bulletin of Environmental Contamination and Toxicology

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https://www.readbyqxmd.com/read/30426141/total-mercury-in-plant-tissue-from-a-mining-landscape-in-western-mexico
#1
Verónica Osuna-Vallejo, Cuauhtémoc Sáenz-Romero, Luis Escalera-Vázquez, Erick de la Barrera, Roberto Lindig-Cisneros
Environmental impacts of mining activities are well known, particularly on-site degradation, but long term effects are less known. Mercury content from vegetation samples from a mine dump and surrounding forests was quantified for understanding the fate of this element in the local the environment. The study area, Tlalpujahua, Michoacán, México, has a mining history going back more than 400 years. Including gold and silver extraction by means of mercury amalgamation for 352 years (1554-1906). Mercury was present in all sampled materials...
November 13, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30411274/concentrations-sources-and-risk-assessment-of-organohalogen-compounds-in-soils-from-kiambu-to-mombasa-kenya
#2
Victorine Anyango Makokha, Anne Wairimu Ndung'u, Teresiah Muciku Mungai, Xue Yan, Jun Wang
Concentrations, sources, and risk assessment of 16 organochlorinated pesticides (OCPs), seven polychlorinated biphenyls (PCBs) and seven polybrominated diphenyl ethers (PBDEs) were determined in soils from Kiambu to Mombasa in Kenya. The total concentrations of OCPs ranged between 7.62 and 76.09 ng/g, dominated by HCHs. Source identification displayed recent inputs and historical use of DDTs and lindane. The total concentrations of PCBs ranged from 9.90 to 20.8 ng/g with an average of 14.40 ng/g dominated by penta-PCBs from old transformers leakages...
November 8, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30406814/metallothionein-induced-time-dependent-histomorphometric-analysis-of-clarias-gariepinus-exposed-to-cadmium
#3
S Vincent, R Sumit, S Bavithra, V Victoria, N Akhila, J Prabha
Cadmium (Cd), an extremely toxic heavy metal is extensively used in modern era because of its constructive chemical and physical properties. Recently Cd contamination was estimated in India's major cities fresh water ecosystem, which may have firm impact on human health. Hence, this study was aimed to detect the time dependent effect of cadmium in fresh water fish C. gariepinus, a bioindicator species of water pollution. In a controlled environment, fishes were exposed to cadmium for different duration and analyzed for Cd accumulation...
November 8, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30406278/overexpression-of-three-duplicated-bnpcs-genes-enhanced-cd-accumulation-and-translocation-in-arabidopsis-thaliana-mutant-cad1-3
#4
Jiuyuan Bai, Xin Wang, Rui Wang, Jing Wang, Sixiu Le, Yun Zhao
Phytochelatins are widely known to chelate heavy metal in vacuole and decrease plant damage. Phytochelatin synthase gene (PCS), which is involved in phytochelatins synthesis, is commonly designated as a key gene for phytoremediation. In our study, we cloned three duplicated BnPCS genes from Brassica napus and transformed them into Arabidopsis thaliana AtPCS1 mutant cad1-3, respectively. Three transgene lines and cad1-3 were subjected to a cascade of concentrations of cadmium (Cd) treatment. Evaluation of morphological and physiological measurement results show that transgene lines possess higher Cd tolerance and resistance than A...
November 7, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30386893/potential-risk-by-disposal-of-bottom-ash-from-thermal-power-plants-and-minimization-by-addition-of-nahco-3
#5
Gurprit Singh, Satish Kumar, S K Mohapatra
In the present study, the leachability of traced elements from the bottom ash of three different Indian power plants was investigated. Environmental impact of bottom ash was studied by varying the liquid-to-solid (L/S) ratio from 20:1 to 60:1. Leaching results show the presence of a major proportion of elements Mn, Mg, Cr, Zn and Cu and a minor proportion of Pb, Fe, Co, and Mo. The effect of the addition of sodium bicarbonate (NaHCO3 ) on leaching characteristics of bottom ash was also studied. Leaching concentration of bottom ash samples reduces with addition of additive from 0...
November 1, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30386892/contaminated-site-management-and-remediation-technologies
#6
EDITORIAL
I Panagiotakis, D Dermatas
No abstract text is available yet for this article.
November 1, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30386891/bioaccumulation-of-total-mercury-thg-in-catfish-siluriformes-ariidae-with-different-sexual-maturity-from-canan%C3%A3-ia-iguape-estuary-sp-brazil
#7
Giulliana D Pecoraro, Marcos A Hortellani, Yuri S Hagiwara, Elisabete S Braga, Jorge E Sarkis, Juliana S Azevedo
In order to improve the knowledge of total mercury (THg) bioaccumulation in bioindicator species of sea catfish (Siluriformes, Ariidae) and taking into account the relatively recent approach with respect to estuarine fish on the Brazilian coast, 65 individuals were caught in the northern and southern regions of the Cananeia estuary to determine the concentration of the THg in muscles, gills, gonads and kidney of the Cathorops spixii and Genidens genidens specimens. The difference in the THg accumulation associated to the maturity of the catfish reflects a differential metabolism regarding THg bioaccumulation in adults (males and females) and juveniles...
November 1, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30382304/toxicity-of-heavy-metals-to-mongoloniscus-sinensis-dollfus-1901-crustacea-isopoda-oniscidea
#8
Ting Zhao, Mingxiao Wang, Mengwen Li, Jianmei An
The bioaccumulation of and resistance to different heavy metals in soil was tested using Mongoloniscus sinensis, a terrestrial isopod endemic to china, and results show that: (1) the median lethal concentration (LC50 ) of Pb, Zn, Cd in the filter paper contact test after 48 h was 197.6, 503.7, 448.0 µg cm- 2 , LC50 of Pb-Zn compounds was 173.8 and 440.8 µg cm- 2 and after 14 days of soil contamination LC50 was 2917.0, 2977.9, 5048.4 mg kg- 1 , LC50 of Pb-Zn compounds was 1219 and 1463 mg kg- 1 ...
October 31, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30374587/emerging-and-traditional-organic-markers-in-areas-with-multiple-anthropogenic-activities-development-of-an-analytical-protocol-and-its-application-in-environmental-assessment-studies
#9
Pollyana C V de Morais, Allyne F Gama, Gabrielle M Fernandes, Andre H B Oliveira, Marcielly F B Lima, Felipe R Dos Santos, Davi A Martins, Ronaldo F Nascimento, Rivelino M Cavalcante
This work describes the development of an analytical protocol combining cleanup by liquid-solid extraction and GC-MS for the determination of emerging and traditional multi-molecular markers. The procedure was used for the environmental assessment of a coastal region with multiple human activities. Global recovery rates ranged from 45.49% to 119.4% for the 46 substances analyzed: pesticides (73.7%-97.7%), PAHs (52.5%-93.7%), sterols (66.7%-119.4%) and natural and synthetic hormones (45.5%-119.1%) and the rates were compared to those reported in studies on both individual classes and multi-classes of contaminants...
October 29, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30374586/occurrence-of-acetamiprid-residues-in-water-reservoirs-in-the-cotton-basin-of-northern-benin
#10
Berny's G Y M Zoumenou, Martin P Aïna, Ibrahim Imorou Toko, Ahmed Igout, Caroline Douny, François Brose, Bruno Schiffers, Ibrachi Gouda, Kisito Chabi Sika, Patrick Kestemont, Marie-Louise Scippo
An Ultra performance liquid chromatography (UPLC) coupled to UV detection method was developed to determine acetamiprid residues in water reservoirs of northern Benin, close to cotton fields. The quantification limit of this method was 0.2 µg L-1 acetamiprid in water, its precision ranged between 8% and 22%, and its trueness between 99% and 117% (for concentrations ranging from 0.2 to 5.0 µg L-1 ). Acetamiprid residues were determined in water samples collected in four reservoirs from northern Benin during the phytosanitary treatment period of cotton...
October 29, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30374585/waterborn-genotoxicity-in-southern-brazil-using-astyanax-bifasciatus-pisces-teleostei
#11
Cátia Cappelli Wachtel, Elton Celton de Oliveira, Thiago Cintra Maniglia, Andre Smith-Johannsen, Aliciane de Almeida Roque, Nédia de Castilhos Ghisi
Water bodies are often negatively affected by unmediated expansion of surrounding human populations. This makes it essential to establish growth planning strategies that balance productivity and sustainability when creating a viable ecological equilibrium. This study aimed to evaluate genotoxic effects in southern Brazil, using biomarkers in the fish Astyanax bifasciatus, during summer and winter of 2016. The erythrocytic nuclear abnormalities test and the micronucleus test as well as the blood and liver comet assay were used to determine genetic biomarker damage...
October 29, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30374584/active-biomonitoring-of-metals-with-cultured-anodonta-woodiana-a-case-study-in-the-taihu-lake-china
#12
Xiubao Chen, Yanping Su, Hongbo Liu, Jian Yang
Freshwater bivalves (Anodonta woodiana), cultured in the Nanquan Aquaculture Base, were translocated to the water source area of Xidong Waterworks in the Taihu Lake for 18-months to biomonitor 13 metals, and determine the suitability of using these cultures as an indicator of long-term metal contamination. Mussel and water samples were analyzed every 6 months, with the Nanquan Aquaculture Base serving as control. Metal concentrations in water and mussels from both sites were generally within the Chinese permissible levels...
October 29, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30374583/influence-of-al-2-o-3-nanoparticles-on-the-soil-elements
#13
Asli Baysal, Hasan Saygin, Gul Sirin Ustabasi
The behavior of nanoparticles released to the soil has been extensively studied in recent years; however, the effects of nanoparticles on the distribution of soil elements and on sowing are still unknown. To this end, to examine the distribution of selected elements in soil, soil samples were treated weekly with 1.0 mg and 20.0 mg of Al2 O3 nanoparticles for 3 weeks. Additionally, different types of plants (including taproot, fibrous root and ornamental bulbous plants) were sowed in the soil samples. After each treatment, surface soil samples were collected and digested with acid digestion...
October 29, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30353307/high-resistance-of-resting-eggs-of-cladoceran-moina-macrocopa-to-the-effect-of-heavy-metals
#14
Natalia Oskina, Tatiana Lopatina, Olesya Anishchenko, Egor Zadereev
The research aimed to determine critical concentrations of heavy metals at which survival of resting eggs of the cladoceran Moina macrocopa is negatively affected. Resting eggs' viability was not affected over a 30-days exposure towards copper, cadmium, zinc or nickel at concentrations up to 60-70 g/L. When resting eggs were exposed to sediment contaminated with heavy metals for 8 months, the hatching success was affected at 30 g copper/kg. Thus, resting eggs of Cladocera can tolerate heavy metals at concentrations that far exceed lethal concentrations of heavy metals to active life stage and exceed low or moderate levels of environmental pollution...
October 23, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30315319/spatial-variations-of-soil-heavy-metal-potential-ecological-risks-in-typical-moso-bamboo-forests-of-southeast-china
#15
Fan Wang, Wenjing Zhao, Yiyue Chen
Spatial patterns of soil heavy metal potential ecological risk are important for the scientific pollution management of bamboo forests. A total of 160 soil samples were collected from typical moso bamboo forests in the southeastern region of China. Ecological risk index and GIS-based kriging methodologies were applied to analyze spatial variations of analyzed metals and were compared to background levels in samples collected from Zhejiang Province. The results show that the exceeded background rate of the single-factor pollution index of Pb, Cd and Cu in all soil samples is greater than 50%, with the highest overbackground rate of Pb being 99...
October 12, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30310947/metal-tolerance-capability-of-helichrysum-microphyllum-cambess-subsp-tyrrhenicum-bacch-brullo-giusso-a-candidate-for-phytostabilization-in-abandoned-mine-sites
#16
G Bacchetta, M E Boi, G Cappai, G De Giudici, M Piredda, M Porceddu
Sardinia was known as an important mine pole in Europe during his history. Still after decades from mine closure, 75.000.000 m3 of mine waste, rich in heavy metals, were left abandoned causing a huge environmental legacy on the mine district area. Consequently, cost effective remediation is required. In this frame, phytoremediation is considered a feasible candidate. This research was focused on Helichrysum microphyllum subsp. tyrrhenicum, which is pioneer in xeric soils with low-functions, like mine tailings...
October 11, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30306192/phosphorus-enhances-cr-vi-uptake-and-accumulation-in-leersia-hexandra-swartz
#17
Chan-Cui Wu, Jie Liu, Xue-Hong Zhang, Shi-Guang Wei
The effects of P supplementation on chromium(VI) uptake by Leersia hexandra Swartz were studied using pot-culture experiment. P-deficiency and zero-P addition controls were included. The Cr(VI) uptake followed Michaelis-Menten kinetics. Compare with the control, the P-supply decreased the Michaelis constant (Km) by 16.9% and the P-deficiency decreased the maximum uptake velocity (Vmax ) by 18%, which indicated no inhibition and competition between P and Cr(VI) uptake by L. hexandra. Moreover, there were a synergistic action between P and Cr(VI) suggests that Cr(VI) uptake by the roots of L...
October 10, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30283993/impact-of-long-term-application-of-sewage-on-soil-and-crop-quality-in-vertisols-of-central-india
#18
M L Dotaniya, S Rajendiran, V D Meena, M Vassanda Coumar, J K Saha, S Kundu, A K Patra
Shortfall of rain and the decreased groundwater level force farmers to use poor quality water for crop production in developing countries. In this study, the quality of agricultural produce and soil health affected by sewage water (Patranala) irrigation was evaluated. Sewage sediment, soil and crop samples were analyzed for physico-chemical properties. Sewage water found to contain trace concentration of heavy metals. However, long-term application of this water for crop production could build up a significant amount of trace metals in both soil and sediments...
October 3, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30269222/deep-eutectic-solvent-based-air-assisted-ligandless-emulsification-liquid-liquid-microextraction-for-preconcentration-of-some-heavy-metals-in-biological-and-environmental-samples
#19
Maryam Ezoddin, Navid Lamei, Fatemeh Siami, Khosrou Abdi, Mohammad Ali Karimi
In this study, a deep eutectic solvent (DES) based on air-assisted ligandless emulsification liquid-liquid microextraction method (DES-AA-LL-ELLME) was considered for preconcentration and extraction of some metals (Cd, Ni, Pb and Cu). A 1:1 mixture of the synthesized DES and triethylamine was added as an extractant to extract metal ions in the absence of chelating agent. Tetrahydrofuran as the aprotic solvent provided a turbid state. To disperse the aggregated DES droplets into the aqueous phase, air-assisted was performed...
September 29, 2018: Bulletin of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/30255234/laboratory-testing-in-support-of-surfactant-alternating-gas-foam-flood-for-napl-recovery-from-shallow-subsurface
#20
Marinos Stylianou, Jae Ho Lee, Konstantinos Kostarelos, Theano Voskaridou
Use of viscosifiers have been shown helpful for mobility control when displacing higher viscosity fluids, and to improve sweep in heterogeneous media. Foam can be used as a viscosifier for this purpose. Selected surfactant solutions were investigated for their ability to generate foam within porous media and foam stability through batch and column experiments using field-obtained soil. The approach used to generate foam in-situ consisted of several cycles (7) of surfactant-alternating-gas originally developed to recover crude oil; 0...
September 25, 2018: Bulletin of Environmental Contamination and Toxicology
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