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Archives of Environmental Contamination and Toxicology

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https://www.readbyqxmd.com/read/28815314/a-comparative-study-on-macro-and-microelement-bioaccumulation-properties-of-leaves-and-bark-of-quercus-petraea-and-pinus-sylvestris
#1
Agnieszka Klink, Ludmiła Polechońska, Małgorzata Dambiec, Kamila Białas
Trees are widely used for biomonitoring and filtering air in industrial, urban, and rural areas. This research was undertaken to examine accumulation capacities of macroelements (Ca, K, Mg, Na) and trace metals (As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Zn) in needles and bark of Pinus sylvestris and leaves and bark of Quercus petraea growing in the vicinity of the chlor-alkali plant PCC Rokita in Brzeg Dolny (Lower Silesia, SW Poland). Because Scots pine is well studied and considered a useful bioindicator, we have used this species as a base for comparison of the accumulation ability of sessile oak that shows some features of good bioindicator, but whose biogeochemistry was scarcely studied...
August 16, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28815292/concentrations-and-exposure-evaluation-of-metals-in-diverse-food-items-from-chengdu-china
#2
Rong Wang, Bifeng Zhong, Lu Pi, Fuyu Xie, Mengqin Chen, Sanglan Ding, Shijun Su, Zhi Li, Zhiwei Gan
A total of 520 food samples belonging to 29 food types and 63 drinking water were collected in Chengdu market of China in 2014 to investigate the concentrations of 11 metals, and to assess the related exposure to the local consumers by estimating the hazard quotient and carcinogenic risk (CR). The results showed that metals concentrations in drinking water were below the limit values suggested by the Ministry of Health of the People's Republic of China, and FAO/WHO (Food and Agriculture Organization of the United Nations/World Health Organization)...
August 16, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28801706/seasonal-distribution-source-identification-and-toxicological-risk-assessment-of-polycyclic-aromatic-hydrocarbons-pahs-in-sediments-from-wadi-el-bey-watershed-in-tunisia
#3
Imen Gdara, Ines Zrafi, Catia Balducci, Angelo Cecinato, Ahmed Ghrabi
Surface sediments were collected from the Watershed of Wadi El Bey in Tunisia to evaluate the degree of polycyclic aromatic hydrocarbons (PAHs) contamination. Sediments were collected during different seasons in 14 sites that received wastes from domestic effluent, industrial discharge, and agricultural drainage wastes. Twenty-six individual PAHs were analyzed. The total PAH contents (Σ PAHs) in surface sediments showed wide variability, ranging from 6.89 ± 0.05 to 340 ± 0.1 ng g(-1). The 4-, 5-, and 6-ring compounds were the most abundant PAHs detected at the majority of sites...
August 11, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28791460/migration-of-ag-in-sn-sb-and-bi-and-their-chemical-forms-in-a-monolith-lysimeter-filled-with-a-contaminated-andosol
#4
Tomoyoshi Murata, Masami K Koshikawa, Mirai Watanabe, Hong Hou, Takejiro Takamatsu
Despite the wide use of trace metals in various technologies, such as chemical industries and electronic equipment, insufficient information is available on their behavior in the environment. We investigated changes in chemical forms and vertical distribution during the migration processes of trace metals, whose usage is currently increasing rapidly, such as Ag, In, Sn, Sb, and Bi, in soil contaminated with the equivalent of 50-100 times the background concentrations of these metals using an indoor control type monolith lysimeter filled with Andosol during an 8-year monitoring period...
August 8, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28770281/determination-of-the-extent-of-trace-metals-pollution-in-soils-sediments-and-human-hair-at-e-waste-recycling-site-in-ghana
#5
Takashi Tokumaru, Hirokazu Ozaki, Siaw Onwona-Agyeman, John Ofosu-Anim, Izumi Watanabe
The concentrations of trace elements (Mg, Al, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, As, Se, Rb, Sr, Y, Mo, Cd, In, Sn, Sb, Cs, Ba, Tl, Pb, and Bi) in soils, sediment, human hair, and foodstuff collected around the electronic waste (e-waste) recycling sites in Accra, Ghana were detected using inductively coupled plasma-mass spectrometry (ICP-MS). High levels of Cu, Zn, Mo, Cd, In, Sn, Sb, and Pb were observed in soils collected from the e-waste recycling sites. Four sequential extraction procedures were used to evaluate the mobility and bioavailability of metals (Cu, Zn, Cd, Sb, and Pb)...
August 2, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28770280/glucuronide-and-sulfate-conjugates-of-bisphenol-a-chemical-synthesis-and-correlation-between-their-urinary-levels-and-plasma-bisphenol-a-content-in-voluntary-human-donors
#6
Ka-Lok Ho, Ka-Ki Yuen, Man-Shan Yau, Margaret B Murphy, Yi Wan, Bonnie M-W Fong, Sidney Tam, John P Giesy, Kelvin S-Y Leung, Michael H-W Lam
Bisphenol A (BPA) glucuronide and sulfate conjugates are major products of Phase II metabolism of BPA in humans. In the past, their determination in body fluids usually involves tedious enzymatic hydrolysis and multiresidual analysis. The recent availability of authentic standards of these conjugates enables our better understand of the human metabolism of BPA and the distribution of their metabolites in body fluids. In this work, we report the chemical synthesis and purification of BPA mono- and di-glucuronide and BPA mono- and di-sulfate...
August 2, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28756463/a-comparative-evaluation-of-different-sediment-quality-guidelines-for-metal-and-metalloid-pollution-in-the-xiangjiang-river-hunan-china
#7
Hui Liu, Kejing Zhang, Liyuan Chai, Zhihui Yang, Weichun Yang, Qi Liao, Huan Li, Yi Liu
To evaluate intensively the quality of the sediments contaminated by heavy metals and metalloids in the Xiangjiang River, 52 surface sediment samples were collected at 13 sites and different combinations of empirical and theoretical sediment quality indexes, the consensus-based sediment quality guidelines, sediment toxicity degree, and equilibrium partitioning method were applied. The average contents of Cd, Pb, Cu, Zn, Hg, Cr, and As in the sampled surface sediments were significantly higher than the background values of trace elements in soils of Hunan Province, China...
July 29, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28735361/concentrations-source-identification-and-lung-cancer-risk-associated-with-springtime-pm2-5-bound-polycyclic-aromatic-hydrocarbons-pahs-in-nanjing-china
#8
Chong Chen, Zhonghuan Xia, Minmin Wu, Qianqian Zhang, Tao Wang, Liping Wang, Hao Yang
This study concentrated on the pollution level, sources, and lung cancer risk of PM2.5-bound polycyclic aromatic hydrocarbons (PAHs) in spring in Nanjing, China. The PM2.5 samples were collected in spring of the year 2016 in Nanjing. Sixteen United States Environmental Protection Agency priority PAHs were extracted and analyzed after sampling. The mean concentrations of PAHs and BaPeq were 3.98 ± 1.01 and 0.29 ± 0.08 ng/m(3), respectively, which is a low level among results from regions worldwide. The diurnal variations of PAHs and BaPeq concentrations showed a relatively high level in the early morning, at the morning rush time of work and traffic transportation, and in the evening traffic peak hours...
July 22, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28718158/the-extent-of-heavy-metal-pollution-and-their-potential-health-risk-in-topsoils-of-the-massively-urbanized-district-of-shanghai
#9
Syed Taseer Abbas Jaffar, Long-Zhu Chen, Hassan Younas
Urbanization and industrialization increase the concentrations of heavy metals in soils, which affect human health. A total of 127 topsoil samples were collected from the massively urbanized and industrialized district of Shanghai: Baoshan District. The sampling sites were isolated based on the land-use practice: industrial area, roadside area, residential area, and agricultural area. The absolute concentrations of heavy metals (Zn, Cr, Ni, Mn, Cu, Pb, and Cd) were determined using atomic absorption spectrometry and compared with Shanghai and the National soil background values...
July 17, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28698978/concentration-of-12-metals-and-metalloids-in-the-blood-of-white-stork-ciconia-ciconia-basal-values-and-influence-of-age-and-gender
#10
Ana Raquel Maia, Francisco Soler-Rodriguez, Marcos Pérez-López
The white stork (Ciconia ciconia) is being increasingly used in biomonitoring programmes of environmental contaminants due to its growing population in Europe; however, studies on inorganic elements are scarce. The blood of 70 white storks was collected and analysed by inductively coupled plasma mass spectroscopy (ICP-MS) to determine the presence of the following elements: lead (Pb), mercury (Hg), arsenic (As), nickel (Ni), iron (Fe), zinc (Zn), copper (Cu), selenium (Se), manganese (Mn), chromium (Cr), cobalt (Co), and cadmium (Cd)...
July 11, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28689326/occurrence-and-distribution-of-organophosphate-esters-in-surface-soil-and-street-dust-from-chongqing-china-implications-for-human-exposure
#11
Ming-Jing He, Ting Yang, Zhi-Hao Yang, Qi Li, Shi-Qiang Wei
In the present study, the occurrence, concentrations, and distribution of organophosphate esters (OPEs) were studied in surface soil and street dust samples collected from different sites of Chongqing, a metropolitan city in western China. Furthermore, nondietary daily intakes (DIs) of OPEs only through dust ingestion absorption were assessed between toddlers and adults. The ∑OPEs contents ranged from 10.1 to 315 ng/g dw and from 348 to 1369 ng/g dw in surface soil and street dust samples, respectively, with tris (2-butoxyethyl) phosphate (TBOEP), the predominant OPEs in surface soil, whereas tris (chloroethyl) phosphate (TCEP) occupied a relatively high proportion in street dust samples...
July 8, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28687868/comparative-toxicity-of-two-chemical-dispersants-and-dispersed-oil-in-estuarine-organisms
#12
M E DeLorenzo, P B Key, K W Chung, E Pisarski, B Shaddrix, E F Wirth, P L Pennington, J Wade, M Franco, M H Fulton
Chemical dispersants can be a useful tool to mitigate oil spills. This study examined potential risks to sensitive estuarine species by comparing the toxicity of two dispersants (Corexit(®) EC9500A and Finasol(®) OSR 52) individually and in chemically enhanced water-accommodated fractions (CEWAFs) of Louisiana Sweet Crude oil. Acute toxicity thresholds and sublethal biomarker responses were determined in seven species (sheepshead minnow, grass shrimp, mysid, amphipod, polychaete, hard clam, mud snail). Comparing median lethal (LC50) values for the dispersants, Finasol was generally more toxic than Corexit and had greater sublethal toxicity (impaired embryonic hatching, increased lipid peroxidation, decreased acetylcholinesterase activity)...
July 7, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28687867/effect-of-multi-walled-carbon-nanotubes-on-metabolism-and-morphology-of-filamentous-green-microalgae
#13
Michele Munk, Humberto M Brandão, Claude Yéprémian, Alain Couté, Luiz O Ladeira, Nádia R B Raposo, Roberta Brayner
Multi-walled carbon nanotubes (MWCNTs) have potential applications in the industrial, agricultural, pharmaceutical, medical, and environmental remediation fields. However, many uncertainties exist regarding the environmental implications of engineered nanomaterials. This study examined the effect of the MWCNTs on metabolic status and morphology of filamentous green microalgae Klebsormidium flaccidum. Appropriate concentrations of MWCNT (1, 50, and 100 μg mL(-1)) were added to a microalgal culture in the exponential growth phase and incubated for 24, 48, 72, and 96 h...
July 7, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28668997/chemical-constituents-of-carbonaceous-and-nitrogen-aerosols-over-thumba-region-trivandrum-india
#14
Prashant Hegde, Kimitaka Kawamura
Aerosol filter samples collected at a tropical coastal site Thumba over Indian region were analysed for water-soluble ions, total carbon and nitrogen, organic carbon (OC), elemental carbon (EC), and water-soluble organic carbon/nitrogen and their sources for different seasons of the year. For the entire study period, the order of abundance of ions showed the dominance of secondary ions, such as SO4(2-), NO3(-), and NH4(+). On average, Mg(2+) (56%), K(+) (11%), SO4(2-) (8.8%), and Ca(2+) (8.1%) contributions were from maritime influence...
July 1, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28667423/endosulfan-short-chain-chlorinated-paraffins-sccps-and-octachlorostyrene-in-wildlife-from-greenland-levels-trends-and-methodological-challenges
#15
Katrin Vorkamp, Frank F Rigét, Rossana Bossi, Christian Sonne, Rune Dietz
Besides globally banned "legacy" persistent organic pollutants, other compounds might be present in Arctic wildlife, for which regulation was introduced recently (the insecticide endosulfan), is considered (short-chain chlorinated paraffins, SCCPs) or does not exist (octachlorostyrene, OCS, a byproduct of manufacturing and combustion processes involving chlorine). The purpose of this study was to analyze the time trend of endosulfan (1986-2012) in ringed seals and to address the levels of SCCPs and OCS in wildlife species from Greenland (black guillemot, glaucous gull, ringed seal, polar bear), while taking a critical standpoint to analytical methods typically applied...
June 30, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28664382/direct-determination-of-nimesulide-in-natural-waters-and-wastewater-by-cathodic-stripping-voltammetry
#16
Luciane Miranda, Vanessa C Pereira, Christiane S Machado, Yohandra R Torres, Vanessa E Dos Anjos, Sueli P Quináia
Pharmaceuticals are included in a group of compounds considered as contaminants of emerging concern (CECs) in environmental matrices. The quantification of CECs is typically accomplished using chromatographic methods that require several sample pretreatment steps. The current study proposes a voltammetric method to quantify directly nimesulide (NIM) in aqueous samples. The voltammetric parameters were optimized and chosen based on the profile of the voltammograms and peak current intensity. The adequacy of the analytical method was evaluated using validation criteria, such as accuracy, selectivity, linearity, detection, and quantification limits...
June 29, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28660298/standardize-or-diversify-experimental-conditions-in-ecotoxicology-a-case-study-on-herbicide-toxicity-to-larvae-of-two-anuran-amphibians
#17
Zsanett Mikó, János Ujszegi, Zoltán Gál, Attila Hettyey
Despite a steeply increasing number of ecotoxicological studies on the effects of pesticides on nontarget organisms, studies assessing the adequacy and reliability of different experimental approaches have remained scarce. We scrutinized effects of a glyphosate-based herbicide on larvae of two European anuran amphibians by estimating species-specific LC50 values, assessing how an additional stress factor may influence outcomes, and investigating whether replicate experiments yielded qualitatively the same results...
June 28, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28631032/occurrence-and-fate-of-organic-and-organometallic-pollutants-in-municipal-wastewater-treatment-plants-and-their-impact-on-receiving-waters-adour-estuary-france
#18
J Cavalheiro, O Zuloaga, A Prieto, H Preudhomme, D Amouroux, M Monperrus
To achieve a "Good Environmental Status by 2015," as demanded by the water framework directive, monitoring programs are needed to furnish data on target compounds. In this study, a first evaluation of influents and main emissions of 3 local wastewater treatment plants (WWTP) in the Adour estuary (southwest of France) was performed for 23 pollutants (10 musk fragrances, 5 alkylphenols, and 8 organometallics), as well as receiving estuarine water from the same area. High frequency of occurrence of these compounds was found in influents samples (musks: 22-100%; alkylphenols 11-100%; organometallics 0-100%) and effluents (musks: 0-100%; alkylphenols 0-100%; organometallics 0-100%)...
June 19, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28631031/metals-in-blood-and-eggs-of-green-sea-turtles-chelonia-mydas-from-nesting-colonies-of-the-northern-coast-of-the-sea-of-oman
#19
Mahmood Sinaei, Mehdi Bolouki
The green sea turtle (Chelonia mydas) has been a species of global concern for decades. In this study, heavy metals (mercury: Hg; Cadmium: Cd; Lead: Pb; Copper: Cu; and Zinc: Zn) were measured in blood and three egg fraction of green sea turtles nesting on the northern coast of Sea of Oman. Heavy metals concentrations in blood, yolk, albumen, and egg shell ranged between 0.16-36.78, 0.006-33.88, 0.003-4.02, and 0.002-6.85 μg/g (ww), respectively. According to the results, all heavy metals found in blood samples (n = 12) also were detected in the various parts of the eggs (n = 48)...
June 19, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28631030/the-impact-of-impoundment-on-mercury-bioaccumulation-in-fish-downstream-from-a-newly-constructed-reservoir-wujiang-river-southwest-china
#20
Sixin Li, Lianfeng Zhou, Jianbo Chang, Zhi Yang, Juxiang Hu, Wang Hongjun
Mercury concentrations in fish were investigated downstream from a newly impounded subtropical reservoir in August 2008. After 6-7 months of reservoir impoundment, mean mercury concentration in fish from downstream is significantly increased by 1.9 times. Not only carnivorous fish but also benthic fish had significantly higher total mercury concentrations than others. No significant correlation was found between total mercury concentrations and body length or weight of 13 fish species. Compared with the pre-impoundment, total mercury in fish from downstream is significantly increased by reservoir impoundment, but the increased rate is lower than those in subarctic and temperate areas...
June 19, 2017: Archives of Environmental Contamination and Toxicology
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