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Environmental Geochemistry and Health

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https://www.readbyqxmd.com/read/28702790/heavy-metal-induced-oxidative-stress-on-seed-germination-and-seedling-development-a-critical-review
#1
Mihiri Seneviratne, Nishanta Rajakaruna, Muhammad Rizwan, H M S P Madawala, Yong Sik Ok, Meththika Vithanage
Heavy metal contamination in soils can influence plants and animals, often leading to toxicosis. Heavy metals can impact various biochemical processes in plants, including enzyme and antioxidant production, protein mobilization and photosynthesis. Hydrolyzing enzymes play a major role in seed germination. Enzymes such as acid phosphatases, proteases and α-amylases are known to facilitate both seed germination and seedling growth via mobilizing nutrients in the endosperm. In the presence of heavy metals, starch is immobilized and nutrient sources become limited...
July 12, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28695305/mercury-contamination-in-selected-foodstuffs-and-potential-health-risk-assessment-along-the-artisanal-gold-mining-gilgit-baltistan-pakistan
#2
Arjumand Riaz, Sardar Khan, Said Muhammad, Caihong Liu, Mohammad Tahir Shah, Mohsin Tariq
This study investigates the mercury (Hg) contaminations in soil and foodstuffs along the artisanal gold mining areas, Gilgit-Baltistan Province, Pakistan. For this purpose, soils were analyzed for Hg concentrations and evaluated for the enrichment/contamination using enrichment factor or contamination factors (CF). The CF values ranged from 18.9 to 153 showed multifold higher levels of Hg contamination as compared to background or reference site. Foodstuffs including vegetables, seeds or grains and fish muscles showed Hg accumulation...
July 10, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28695304/heavy-metal-contamination-in-river-water-and-sediments-of-the-swarnamukhi-river-basin-india-risk-assessment-and-environmental-implications
#3
Priyanka Patel, N Janardhana Raju, B C Sundara Raja Reddy, U Suresh, D B Sankar, T V K Reddy
The concentration of heavy metals was analyzed each of 20 river water, suspended sediments and bed sediments along the stretch of Swarnamukhi River Basin. River water is not contaminated with heavy metals except Fe and Mn. Contamination factor in sediments shows considerable to very high degree contamination with Cr, Cu, Pb and Zn. The sources of these metals could be residential wastes, sewer outfall, fertilizers, pesticides (M-45 + carbondine) and traffic activities apart from natural weathering of granitic rocks present in the basin area...
July 10, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28664249/hydrogeochemistry-study-and-groundwater-quality-assessment-in-the-north-of-isfahan-iran
#4
Ali Rezaei, Hossein Hassani
This study presents the groundwater quality assessment in the north of Isfahan, Iran. In the study area, assessment and measurement of groundwater hydrochemical parameters such as pH, total dissolved solids (TDS), electrical conductivity (EC), sodium absorption ratio (SAR), total hardness, major cations (K(+), Na(+), Ca(2+) and Mg(2+)) and major anions (Cl(-), [Formula: see text] and [Formula: see text]) concentrations were performed. Accordingly, the 66 water samples from different locations were collected during April and May 2015...
June 29, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28664248/biochar-physicochemical-parameters-as-a-result-of-feedstock-material-and-pyrolysis-temperature-predictable-for-the-fate-of-biochar-in-soil
#5
Kateřina Břendová, Jiřina Száková, Miloslav Lhotka, Tereza Krulikovská, Miroslav Punčochář, Pavel Tlustoš
Biochar application is a widely investigated topic nowadays, and precisely described biochar parameters are key information for the understanding of its behaviour in soil and other media. Pore structure and surface properties determine biochar fate. However, there is lack of complex, investigative studies describing the influence of biomass properties and pyrolysis conditions on the pore structure of biochars. The aim of our study was to evaluate a wide range of gathered agriculture residues and elevated pyrolysis temperature on the biochar surface properties and pore composition, predicting biochar behaviour in the soil...
June 29, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28660383/risk-estimation-and-annual-fluxes-of-emerging-contaminants-from-a-scottish-priority-catchment-to-the-estuary-and-north-sea
#6
Zulin Zhang, Melanie Lebleu, Mark Osprey, Christine Kerr, Estelle Courtot
Emerging contaminants (ECs) such as endocrine-disrupting chemicals (EDCs) and pharmaceuticals and personal care products (PPCPs) attracted global concern during the last decades due to their potential adverse effects on humans and ecosystems. This work is the first study to assess the spatiotemporal changes, annual fluxes and ecological risk of ECs (4 EDCs and 6 PPCPs) by different monitoring strategies (spot and passive sampling) over 12 months in a Scottish priority catchment (River Ugie, Scotland, 335 km(2))...
June 28, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28653083/determining-soil-quality-in-urban-agricultural-regions-by-soil-enzyme-based-index
#7
Avanthi Deshani Igalavithana, Muhammad Farooq, Kye-Hoon Kim, Young-Han Lee, Muhammad Farooq Qayyum, Mohammad I Al-Wabel, Sang Soo Lee, Yong Sik Ok
Urban agricultural soils are highly variable, and careful selection of sensitive indicators is needed for the assessment of soil quality. This study is proposed to develop an index based on soil enzyme activities for assessing the quality of urban agricultural soils. Top soils were collected from urban agricultural areas of Korea, and soil chemical properties, texture, microbial fatty acids, and enzyme activities were determined. The soils belonged to five textural classes with the highest frequency of sandy loam...
June 26, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28643123/study-of-the-interactions-of-dissolved-organic-matter-with-zinc-ion-and-the-impact-of-competitive-metal-ions-ca-2-and-mg-2-by-in-situ-absorbance
#8
Tianyu Zhang, Tao Wang, Yujuan Lu
The bioavailability and toxicity of zinc to aquatic life depend on dissolved organic matter (DOM), such as Suwannee River Fulvic Acid (SRFA), which plays an important role in the speciation of zinc. This study examined reactions of SRFA with zinc at different concentrations from pH 3.0 to 9.0, and competitive binding of calcium/magnesium and zinc to SRFA at pH 6.0, using in situ absorbance. Interactions of Zn(2+) with SRFA chromophores were evidenced by the emergence of features in Zn-differential spectra. Among all Zn(2+)-SRFA systems, dominant peaks, located at 235, 275 and 385 nm, and the highest intensity at 235 nm indicated the replacement of protons by the bound Zn(2+)...
June 22, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28623427/blood-concentrations-of-lead-cadmium-mercury-and-their-association-with-biomarkers-of-dna-oxidative-damage-in-preschool-children-living-in-an-e-waste-recycling-area
#9
Xijin Xu, Weitang Liao, Yucong Lin, Yifeng Dai, Zhihua Shi, Xia Huo
Reactive oxygen species (ROS)-induced DNA damage occurs in heavy metal exposure, but the simultaneous effect on DNA repair is unknown. We investigated the influence of co-exposure of lead (Pb), cadmium (Cd), and mercury (Hg) on 8-hydroxydeoxyguanosine (8-OHdG) and human repair enzyme 8-oxoguanine DNA glycosylase (hOGG1) mRNA levels in exposed children to evaluate the imbalance of DNA damage and repair. Children within the age range of 3-6 years from a primitive electronic waste (e-waste) recycling town were chosen as participants to represent a heavy metal-exposed population...
June 16, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28620817/effect-of-biosolid-hydrochar-on-toxicity-to-earthworms-and-brine-shrimp
#10
Tatiane Medeiros Melo, Michael Bottlinger, Elke Schulz, Wilson Mozena Leandro, Adelmo Menezes de Aguiar Filho, Yong Sik Ok, Jörg Rinklebe
The hydrothermal carbonization of sewage sludge has been studied as an alternative technique for the conversion of sewage sludge into value-added products, such as soil amendments. We tested the toxicity of biosolid hydrochar (Sewchar) to earthworms. Additionally, the toxicity of Sewchar process water filtrate with and without pH adjustment was assessed, using brine shrimps as a model organism. For a Sewchar application of 40 Mg ha(-1), the earthworms significantly preferred the side of the vessel with the reference soil (control) over side of the vessel with the Sewchar treatments...
June 15, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28620816/bioaccessibility-of-as-cu-pb-and-zn-in-mine-waste-urban-soil-and-road-dust-in-the-historical-mining-village-of-ka%C3%A5-k-czech-republic
#11
Petr Drahota, Karel Raus, Eva Rychlíková, Jan Rohovec
Historical mining activities in the village of Kaňk (in the northern part of the Kutná Hora ore district, Czech Republic) produced large amounts of mine wastes which contain significant amounts of metal(loid) contaminants such as As, Cu, Pb, and Zn. Given the proximity of residential communities to these mining residues, we investigated samples of mine waste (n = 5), urban soil (n = 6), and road dust (n = 5) with a special focus on the solid speciation of As, Cu, Pb, and Zn using a combination of methods (XRD, SEM/EDS, oxalate extractions), as well as on in vitro bioaccessibility in simulated gastric and lung fluids to assess the potential exposure risks for humans...
June 15, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28612322/integrative-assessment-of-sediment-quality-in-lower-basin-affected-by-former-mining-in-brazil
#12
Estefanía Bonnail, Lucas M Buruaem, Lucas G Morais, Giuliana S Araujo, Denis M S Abessa, Aguasanta M Sarmiento, T Ángel DelValls
The Ribeira de Iguape River (Southeast Brazil) is metal contaminated by mining activities. Despite it has been cataloged as "in via of restoration" by the literature, this basin is still a sink of pollution in some segments of the fluvial system. This study aimed to assess the sediment quality in the lower part of the RIR basin. The employed approach was based on biological responses of the freshwater clam Corbicula fluminea after 7-day exposure bioassays using as the reference site the Perequê Ecological Park...
June 13, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28600727/evaluation-of-acidity-in-late-permian-outcrop-coals-and-its-association-with-endemic-fluorosis-in-the-border-area-of-yunnan-guizhou-and-sichuan-in-china
#13
Xiuping Hong, Handong Liang, Yufa Zhang
The junction area of Yunnan, Guizhou, and Sichuan provinces is the heaviest coal-burning endemic fluorosis zones in China. To better understand the pathogenicity of endemic fluorosis in this area, 87 coal samples from the late Permian outcrop or semi-outcrop coal seams were collected in eight counties of the junction area of Yunnan, Guizhou, and Sichuan provinces. The total fluorine and sulfate content, etc. in the coal was determined using combustion-hydrolysis/fluoride-ion-selective electrode method and ion chromatography, respectively...
June 9, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28600726/the-influence-of-physicochemical-parameters-on-bioaccessibility-adjusted-hazard-quotients-for-copper-lead-and-zinc-in-different-grain-size-fractions-of-urban-street-dusts-and-soils
#14
Sharareh Dehghani, Farid Moore, Luba Vasiluk, Beverley A Hale
When the hazard quotient for ingestion (HQI) of a trace element in soil and dust particles is adjusted for the element's bioaccessibility, the HQI is typically reduced as compared to its calculation using pseudo-total element concentration. However, those studies have mostly used bulk particles (<2 mm or <250 µm), and the reduction in HQI when expressed as bioaccessible metal may not be similar among particle size fractions, the possibility probed by the present study of street dusts and soils collected in Tehran...
June 9, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28584978/review-of-total-suspended-particles-tsp-and-pm2-5-concentration-variations-in-asia-during-the-years-of-1998-2015
#15
Guor-Cheng Fang, Yuan-Jie Zhuang, Meng-Hsien Cho, Chao-Yang Huang, You-Fu Xiao, Kai-Hsiang Tsai
In Asian countries such as China, Malaysia, Pakistan, India, Taiwan, Korea, Japan and Hong Kong, ambient air total suspended particulates and PM2.5 concentration data were collected and discussed during the years of 1998-2015 in this study. The aim of the present study was to (1) investigate and collect ambient air total suspended particulates (TSP) and PM2.5 concentrations for Asian countries during the past two decades. (2) Discuss, analyze and compare those particulates (TSP and PM2.5) annual concentration distribution trends among those Asian countries during the past two decades...
June 5, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28578479/vulnerability-associated-with-symptoms-similar-to-those-of-mercury-poisoning-in-communities-from-xingu-river-amazon-basin
#16
Flávio Mnaoel Rodrigues Da Silva-Junior, Ritta M Oleinski, Antonia E S Azevedo, Kátia C M C Monroe, Marina Dos Santos, Tatiane Britto Da Silveira, Adrianne Maria Netto De Oliveira, Maria Cristina Flores Soares, Tatiana Da Silva Pereira
The Brazilian Amazon is known to be a region with high levels of mercury (Hg) in the environment and studies point to an association between high levels of natural mercury in the mother rock and the vast number of clandestine gold mines. Other studies already report the contamination of fish in this region, as well as high levels of Hg in biological material from environmentally exposed populations. On the other hand, this is one of the least developed regions of the planet and it is necessary to understand the vulnerability factors in these populations that may be intoxicated by this element...
June 3, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28577063/indoor-and-outdoor-radon-measurements-at-lung-cancer-patients-homes-in-the-dwellings-of-rize-province-in-turkey
#17
Songül Akbulut Özen, Necati Celik, Emrehan Dursun, Halim Taskın
In this study, indoor and outdoor radon ((222)Rn) surveys were carried out in the summer and winter seasons in homes of one hundred lung cancer patients in the year 2013-2014. The aim was to investigate the relationship between radon and cancer patients. Lung cancer patients completed a questionnaire concerning their living environment, various physical parameters and living habits. Pearson correlation and t tests revealed no meaningful results between radon concentrations, on one hand, and environmental and personal living habits, on the other hand...
June 2, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28573332/a-new-comprehensive-ecological-risk-index-for-risk-assessment-on-luanhe-river-china
#18
Kun Bao, Jing-Ling Liu, Xiao-Guang You, Xuan Shi, Bo Meng
With the enhancement of human activities which influence the physical and chemical integrity of ecosystem, it was bound to increase ecological risk to the ecosystem, and the risk assessment of small scale, single pollutant, or only on water quality have been not satisfied the demand of sustainable development of basin water environment. Based on the response relationship between environmental flow requirements guarantee ratio (GEF) and river ecological risk index (ERI), the Sediment Quality Guideline Quotient index (SQG-Q), and the Biotic Index (BI), we construct a new comprehensive ecological risk index (CERI) to evaluate the ecological risk of Luanhe River, China...
June 1, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28555279/mercury-uptake-by-halophytes-in-response-to-a-long-term-contamination-in-coastal-wetland-salt-marshes-northern-adriatic-sea
#19
E Pellegrini, E Petranich, A Acquavita, J Canário, A Emili, S Covelli
Mercury (Hg) distribution in saltmarsh sediments and in three selected halophytes (Limonium narbonense, Sarcocornia fruticosa and Atriplex portulacoides) of a wetland system (Marano and Grado Lagoon, Italy) following a contamination gradient in sediments was investigated. The Hg uptake was evaluated at the root system level by calculating the enrichment factor (EF) and in the aboveground tissues by means of the translocation factor (TF). The related methylmercury (MeHg) concentrations in the halophytes were also investigated with regard to the location of the sites and their degree of contamination...
May 29, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28551883/chemical-fractionation-and-mobility-of-traffic-related-elements-in-road-environments
#20
Ewa Adamiec
Due to considerable progress in exhaust control emission technology and extensive regulatory work regarding this issue, non-exhaust sources of air pollution have become a growing concern. This research involved studying three types of road environment samples such as road dust, sludge from storm drains and roadside soil collected from heavily congested and polluted cities in Poland (Krakow, Warszawa, Opole and Wroclaw). Particles below 20 µm were examined since it was previously estimated that this fine fraction of road dust is polluted mostly by metals derived from non-exhaust sources of pollution such as brake linings wear...
May 27, 2017: Environmental Geochemistry and Health
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