keyword
MENU ▼
Read by QxMD icon Read
search

Soil lead

keyword
https://www.readbyqxmd.com/read/29332372/measurement-and-modeling-of-indoor-radon-concentrations-in-residential-buildings
#1
Ji Hyun Park, Sungim Whang, Hyun Young Lee, Cheol-Min Lee, Dae Ryong Kang
Objectives: Radon, the primary constituent of natural radiation, is the second leading environmental cause of lung cancer after smoking. To confirm a relationship between indoor radon exposure and lung cancer, estimating cumulative levels of exposure to indoor radon for an individual or population is necessary. This study sought to develop a model for estimate indoor radon concentrations in Korea. Especially, our model and method may have wider application to other residences, not to specific site, and can be used in situations where actual measurements for input variables are lacking...
January 8, 2018: Environmental Health and Toxicology
https://www.readbyqxmd.com/read/29331851/rhizospheric-microorganisms-as-a-solution-for-the-recovery-of-soils-contaminated-by-petroleum-a-review
#2
REVIEW
Jéssica Janzen Dos Santos, Leila Teresinha Maranho
Petroleum is currently the world's main energy source, and its demand is expected to increase in coming years. Its intense exploitation can lead to an increase in the number of environmental accidents, such as spills and leaks, and an increase in the generation of environmental liabilities resulting from refining. Due to its hydrophobic characteristics and slow process of biodegradation, petroleum can remain in the environment for a long time and its toxicity can cause a negative impact on both terrestrial and aquatic ecosystems, with the main negative effects related to its carcinogenic potential for both animals and humans...
January 11, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29331715/toxicokinetics-of-zn-and-cd-in-the-earthworm-eisenia-andrei-exposed-to-metal-contaminated-soils-under-different-combinations-of-air-temperature-and-soil-moisture-content
#3
M Nazaret González-Alcaraz, Susana Loureiro, Cornelis A M van Gestel
This study evaluated how different combinations of air temperature (20 °C and 25 °C) and soil moisture content (50% and 30% of the soil water holding capacity, WHC), reflecting realistic climate change scenarios, affect the bioaccumulation kinetics of Zn and Cd in the earthworm Eisenia andrei. Earthworms were exposed for 21 d to two metal-contaminated soils (uptake phase), followed by 21 d incubation in non-contaminated soil (elimination phase). Body Zn and Cd concentrations were checked in time and metal uptake (k1) and elimination (k2) rate constants determined; metal bioaccumulation factor (BAF) was calculated as k1/k2...
January 8, 2018: Chemosphere
https://www.readbyqxmd.com/read/29330821/effects-of-ferrous-sulfate-amendment-and-water-management-on-rice-growth-and-metal-loid-accumulation-in-arsenic-and-lead-co-contaminated-soil
#4
Lina Zou, Shu Zhang, Dechao Duan, Xinqiang Liang, Jiyan Shi, Jianming Xu, Xianjin Tang
Arsenic (As) and lead (Pb) commonly co-exist with high concentrations in paddy soil mainly due to human activities in south of China. This study investigates the effect of ferrous sulfate (FeSO4) amendment and water management on rice growth and arsenic (As) and lead (Pb) accumulation in rice plants. A paddy soil co-contaminated with As and Pb was chosen for the pot experiment with three FeSO4 levels (0, 0.25, and 1%, on a dry weight basis) and two water managements (flooded, non-flooded). The concentrations of As and Pb in iron plaques and rice plants were determined...
January 12, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29330477/labile-organic-carbon-pools-and-enzyme-activities-of-pinus-massoniana-plantation-soil-as-affected-by-understory-vegetation-removal-and-thinning
#5
Yafei Shen, Ruimei Cheng, Wenfa Xiao, Shao Yang, Yan Guo, Na Wang, Lixiong Zeng, Lei Lei, Xiaorong Wang
The effects of forest management on carbon (C) sequestration are poorly understood, particularly in the Three Gorges Reservoir area. We aimed to identify the effects of forest management on C sequestration in Pinus massoniana plantations. An intact control forest (CK), a site undergoing regular shrub cutting with the simultaneous removal of residues (SC), a site under low-intensity thinning (LIT), and a site under high-intensity thinning (HIT) were compared for soil labile organic carbon (LOC), related enzyme activities, and soil characteristics...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29329097/sources-and-transformation-pathways-for-dichlorodiphenyltrichloroethane-ddt-and-metabolites-in-soils-from-northwest-fujian-china
#6
Huanfang Huang, Yuan Zhang, Wei Chen, Wenwen Chen, Dave A Yuen, Yang Ding, Yingjie Chen, Yao Mao, Shihua Qi
Dicofol (2,2,2-trichloro-1,1-bis-(p-chlorophenyl)ethanol) found in the environment is not only a miticide originated from commercial use, but also a metabolite of dichlorodiphenyltrichloroethane (DDT), which is often overlooked. To verify the sources and transformation pathways of DDT and related metabolites in soils, we measured p,p'-(dicofol + DBP) (sum of p,p'-dicofol and 4,4'-dichlorobenzophenone), DDT and six metabolites in soils from Northwest Fujian, China. The ratios of 1,1,1-trichloro-2-(o-chlorophenyl)-2-(p-chlorophenyl)ethane (o,p'-DDT)/1,1,1-trichloro-2,2-bis-(p-chlorophenyl)ethane (p,p'-DDT) and the mass balance demonstrated that p,p'-(dicofol + DBP) predominantly originated from p,p'-DDT transformation rather than from actual dicofol application...
January 9, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29329088/metal-sorption-to-spodosol-bs-horizons-organic-matter-complexes-predominate
#7
Charlotta Tiberg, Carin Sjöstedt, Jon Petter Gustafsson
While metal sorption mechanisms have been studied extensively for soil surface horizons, little information exists for subsoils, for example Spodosol Bs horizons. Here the sorption of cadmium(II), copper(II) and lead(II) to seven Bs horizons from five sites was studied. Extended X-ray absorption fine structure (EXAFS) spectroscopy showed that cadmium(II) and lead(II) were bound as inner-sphere complexes to organic matter. Addition of o-phosphate (to 1 μmol l-1) did not result in any significant enhancement of metal sorption, nor did it influence EXAFS speciation...
January 4, 2018: Chemosphere
https://www.readbyqxmd.com/read/29328674/new-insights-on-ecosystem-mercury-cycling-revealed-by-stable-isotopes-of-mercury-in-water-flowing-from-a-headwater-peatland-catchment
#8
Glenn Woerndle, Martin Tsz-Ki Tsui, Stephen Sebestyen, Joel D Blum, Xiangping Nie, Randall K Kolka
Stable isotope compositions of mercury (Hg) were measured in the outlet stream and in soil cores at different landscape positions in a 9.7-ha boreal upland-peatland catchment in northern Minnesota. An acidic permanganate/persulfate digestion procedure was validated for water samples with high dissolved organic matter (DOM) concentrations and we verified the complete breakdown of DOM through Hg spike addition analysis. We report a relatively large variation in mass-dependent fractionation (δ202Hg; from -2.12 to -1...
January 12, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29327186/environmental-pollutants-pathogens-and-immune-system-in-earthworms
#9
Shyamasree Ghosh
Earthworms also known as farmer's friends are natural tillers of soil. They belong to Phylum Annelida and class Oligochaeta. Acid soils with organic matter and surface humus maintain the largest fauna of worms and earthworms. Due to their habitat in soil, they are constantly exposed to microbes and pollution generated by anthropogenic sources. Studies have revealed that damage of the immune system of earthworms can lead to alterations of both morphological and cellular characteristics of worms, activation of signalling pathways and can strongly influence their survival...
January 11, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29324565/assessment-of-child-lead-exposure-in-a-philadelphia-community-2014
#10
Timothy Dignam, Ana Pomales, Lora Werner, E Claire Newbern, James Hodge, Jay Nielsen, Aaron Grober, Karen Scruton, Rand Young, Jack Kelly, Mary Jean Brown
INTRODUCTION: Several urban neighborhoods in Philadelphia, Pennsylvania, have a history of soil, household lead paint, and potential lead-emitting industry contamination. OBJECTIVES: To (1) describe blood lead levels (BLLs) in target neighborhoods, (2) identify risk factors and sources of lead exposure, (3) describe household environmental lead levels, and (4) compare results with existing data. METHODS: A simple, random, cross-sectional sampling strategy was used to enroll children 8 years or younger living in selected Philadelphia neighborhoods with a history of lead-emitting industry during July 2014...
January 10, 2018: Journal of Public Health Management and Practice: JPHMP
https://www.readbyqxmd.com/read/29323284/phases-and-rates-of-iron-and-magnetism-changes-during-paddy-soil-development-on-calcareous-marine-sediment-and-acid-quaternary-red-clay
#11
Laiming Huang, Xiaoxu Jia, Ming'an Shao, Liumei Chen, Guangzhong Han, Ganlin Zhang
Dynamic changes in Fe oxides and magnetic properties during natural pedogenesis are well documented, but variations and controls of Fe and magnetism changes during anthropedogenesis of paddy soils strongly affected by human activities remain poorly understood. We investigated temporal changes in different Fe pools and magnetic parameters in soil profiles from two contrasting paddy soil chronosequences developed on calcareous marine sediment and acid Quaternary red clay in Southern China to understand the directions, phases and rates of Fe and magnetism evolution in Anthrosols...
January 11, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29322395/lead-zinc-and-cadmium-uptake-accumulation-and-phytoremediation-by-plants-growing-around-tang-e-douzan-lead-zinc-mine-iran
#12
Reza Hesami, Azam Salimi, Seyed Majid Ghaderian
In the current study, soils of Tang-e Douzan mine, located in Isfahan, Iran, were collected and analyzed for soluble, exchangeable, and total amounts of Pb, Zn, Cd, Ca, and Mg. The maximum Pb, Zn, Cd, Ca, and Mg concentrations in soils were 2500, 1100, 59, 43,800, and 1320 mg/kg for total metals, 86, 83, 6.3, 4650, and 48 mg/kg for their exchangeable fractions, and 59, 3.7, 0.53, 430, and 6.4 mg/kg for their soluble fractions, respectively. All specimens collected, including 69 plant species, were analyzed for Pb, Zn, and Cd...
January 10, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29322356/inherent-health-and-environmental-risk-assessment-of-nanostructured-metal-oxide-production-processes
#13
Mina Torabifard, Reza Arjmandi, Alimorad Rashidi, Jafar Nouri, Iraj Mohammadfam
The health and environmental effects of chemical processes can be assessed during the initial stage of their production. In this paper, the Chemical Screening Tool for Exposure and Environmental Release (ChemSTEER) software was used to compare the health and environmental risks of spray pyrolysis and wet chemical techniques for the fabrication of nanostructured metal oxide on a semi-industrial scale with a capacity of 300 kg/day in Iran. The pollution sources identified in each production process were pairwise compared in Expert Choice software using indicators including respiratory damage, skin damage, and environmental damages including air, water, and soil pollution...
January 10, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29322303/salt-tolerance-of-two-perennial-grass-brachypodium-sylvaticum-accessions
#14
Nir Sade, Maria Del Mar Rubio Wilhelmi, Xiaojuan Ke, Yariv Brotman, Matthew Wright, Imran Khan, Wagner De Souza, Elias Bassil, Christian M Tobias, Roger Thilmony, John P Vogel, Eduardo Blumwald
We studied the salt stress tolerance of two accessions isolated from different areas of the world (Norway and Tunisia) and characterized the mechanism(s) regulating salt stress in Brachypodium sylvaticum Osl1 and Ain1. Perennial grasses are widely grown in different parts of the world as an important feedstock for renewable energy. Their perennial nature that reduces management practices and use of energy and agrochemicals give these biomass crops advantages when dealing with modern agriculture challenges such as soil erosion, increase in salinized marginal lands and the runoff of nutrients...
January 10, 2018: Plant Molecular Biology
https://www.readbyqxmd.com/read/29321865/responses-of-soil-respiration-to-soil-management-changes-in-an-agropastoral-ecotone-in-inner-mongolia-china
#15
Haili Xue, Haiping Tang
Studying the responses of soil respiration (Rs) to soil management changes is critical for enhancing our understanding of the global carbon cycle and has practical implications for grassland management. Therefore, the objectives of this study were (1) quantify daily and seasonal patterns of Rs, (2) evaluate the influence of abiotic factors on Rs, and (3) detect the effects of soil management changes on Rs. We hypothesized that (1) most of daily and seasonal variation in Rs could be explained by soil temperature (Ts) and soil water content (Sw), (2) soil management changes could significantly affect Rs, and (3) soil management changes affected Rs via the significant change in abiotic and biotic factors...
January 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29318933/comparing-auditory-visual-and-vibrotactile-cues-in-individuals-with-parkinson-s-disease-for-reducing-risk-of-falling-over-different-types-of-soil
#16
Johannes C Ayena, Louis E Tremblay, Martin J-D Otis, Bob-Antoine J Ménélas
INTRODUCTION: Several researchers have demonstrated the positive benefits of auditory and visual cueing in the gait improvements among individuals with Parkinson's disease (PD). However, few studies have evaluated the role of vibrotactile cueing when compared to auditory and visual cueing. This paper compares how these stimuli affect the risk of falling while walking on six types of soil (concrete, sand, parquet, broken stone, two types of carpet). METHODS: An instrumented Timed Up and Go (iTUG) test served to evaluate how audio, visual and vibrotactile cueing can affect the risk of falling of elderly...
January 10, 2018: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/29316464/comparison-of-tolerance-and-biosorption-of-three-trace-metals-cd-cu-pb-by-the-soil-fungus-absidia-cylindrospora
#17
Quentin Albert, Lydia Leleyter, Mélanie Lemoine, Natacha Heutte, Jean-Philippe Rioult, Lucile Sage, Fabienne Baraud, David Garon
Trace metals cause deterioration of the soil and constitute a major concern for the environment and human health. Bioremediation could be an effective solution for the rectification of contaminated soils. Fungi could play an important role in biodegradation because of the morphology of their mycelium (highly reactive and extensive biological surface) and its physiology (high tolerance to many stresses, production of enzymes and secondary metabolites). Fungi can effectively biosequestrate, or biotransform many organic and inorganic contaminants into a non-bioavailable form...
December 28, 2017: Chemosphere
https://www.readbyqxmd.com/read/29316074/understorey-productivity-in-temperate-grassy-woodland-responds-to-soil-water-availability-but-not-to-elevated-co2
#18
L Collins, R A Bradstock, V Resco de Dios, R A Duursma, S Velasco, M M Boer
Rising atmospheric [CO2 ] and associated climate change are expected to modify primary productivity across a range of ecosystems globally. Increasing aridity is predicted to reduce grassland productivity, though rising [CO2 ] and associated increases in plant water use efficiency may partially offset the effect of drying on growth. Difficulties arise in predicting the direction and magnitude of future changes in ecosystem productivity, due to limited field experimentation investigating climate and CO2 interactions...
January 7, 2018: Global Change Biology
https://www.readbyqxmd.com/read/29314473/the-extent-and-predictability-of-the-biodiversity-carbon-correlation
#19
Moreno Di Marco, James E M Watson, David J Currie, Hugh P Possingham, Oscar Venter
Protecting biomass carbon stocks to mitigate climate change has direct implications for biodiversity conservation. Yet, evidence that a positive association exists between carbon density and species richness is contrasting. Here, we test how this association varies (1) across spatial extents and (2) as a function of how strongly carbon and species richness depend on environmental variables. We found the correlation weakens when moving from larger extents, e.g. realms, to narrower extents, e.g. ecoregions. For ecoregions, a positive correlation emerges when both species richness and carbon density vary as functions of the same environmental variables (climate, soil, elevation)...
January 4, 2018: Ecology Letters
https://www.readbyqxmd.com/read/29314284/the-mercury-problem-in-artisanal-and-small-scale-gold-mining
#20
Louisa J Esdaile, Justin M Chalker
Mercury-dependent artisanal and small-scale gold mining (ASGM) is the largest source of mercury pollution on Earth. In this practice, elemental mercury is used to extract gold from ore as an amalgam. The amalgam is typically isolated by hand and then heated-often with a torch or over a stove-to distill the mercury and isolate the gold. Mercury emissions from tailings and vaporised mercury exceed 1000 tonnes each year from ASGM. The health effects on the miners are dire, with inhaled mercury leading to neurological damage and other health issues...
January 3, 2018: Chemistry: a European Journal
keyword
keyword
2629
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"