arsenic in soil Articles
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Pteris multifida Poir., a new arsenic hyperaccumulator: characteristics and potential
This paper reports a new arsenic hyperaccumulator, Pteris multifida Poir, a fern that grows widely in the southeast of China. The results show that the average arsenic content in the fronds was 1144.78 mg/kg, with a highest value of 2061 mg/kg. The average arsenic content in the roots was 692.7 mg/kg, and the average bioconcentration factor was 1.2, with a highest value of 1.78. The average ...
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Proven alternatives for aboveground treatment of arsenic in groundwater
This issue paper identifies and summarizes experiences with proven aboveground treatment alternatives for arsenic in groundwater, and provides information on their relative effectiveness and cost. The information contained in this paper can also be found in the report “Arsenic Treatment Technologies for Soil, Waste, and Water”, EPA542-R-02-004 (Ref. 1.12), which provides cost and ...
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Arsenic in Soil and CCA Treated Wood by Field Portable XRF
Chromated copper arsenate (CCA) has been the most widely used wood preservative for decks, playgrounds and exterior housing structures. However, in recent years, issues surrounding the use of CCA preservative chemical have escalated, prompting manufacturers to voluntarily stop producing it as of the end of 2003 and begin using alternative wood preservatives. There are concerns of possible ...
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Detecting Arsenic in Soil using Field Portable X-Ray Fluorescence
Abstract Rapid, accurate on site determination of arsenic and heavy metal levels in soil is a powerful tool in efforts to rebuild and revitalize abandoned and under-utilized industrial properties. The EPA is actively spearheading initiatives to encourage assessment, clean-up and re-use of these industrial properties. In the case of heavy metals (often the eight RCRA metals Pb, As, Cd, Cr, Hg, ...
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Effect of amendment on phytoextraction of arsenic by Vetiveria Zizanioides from soil
Abstract: The present study was undertaken to evaluate the growth response of Vetiveria zizanioides amended with organic amendments to arsenic (As) in contaminated soils and its ability to sequester As. The test results indicate that the plants exhibited high tolerance to As in the soils and their normal growth continued even though As concentration reached 500 mg/kg. However, when As ...
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Influence of phosphate and citric acid on the phytoextraction of As from contaminated soils
The influence of phytoextraction in arsenic (As) contaminated soil on the phosphate and citric acid addition were investigated using Pteris vittata L. (Chinese brake fern). The As uptake in the fronds increased 85% in As–spiked soil when phosphate was added. The addition of citric acid for 2 weeks to the phosphate added soils resulted in the highest As uptake by 75% compared to only ...
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Growth response and tolerance of Job's tears (Coix lacryma-jobi L) to arsenic in spiked soils
Job's tears (Coix lacryma-jobi L.), a perennial herbaceous plant, was cultured in soils spiked by arsenic. The results show that Job's tears rapidly grows with high biomass and strongly tolerates with normal accumulation for As in lightly or moderately spiked soils. It insensitively responds to As changes when the content of As in soils is less than 40 mg kg−1 while the concentration of As in ...
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Guest editorial: the IRIS assessment of inorganic arsenic: is science being hijacked?
The arsenic IRIS assessment exemplifies the current administration’s unwillingness to walk its own talk on transparency and scientific integrity. Early in her role as the EPA Administrator, Lisa P. Jackson expressed her now familiar mantra that regulatory initiatives must be “transparent” and risk assessments must be conducted to “ensure the highest levels of scientific ...
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The fate of arsenic in contaminated paddy soil with gypsum and ferrihydrite amendments
Ferrihydrite and gypsum (CaSO4·2H2O) are two chemicals which were suggested to reduce the bioavailability of arsenic (As) in agricultural field. The efficiency of those chemicals added in the paddy field was investigated by pot culture in this study. The results showed As uptake by rice under ferrihydrite treatment was significantly lower than that in the control (36% in shoot), however, plants ...
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What You Should Know about Arsenic Treatments
The nutrients that you put into your body directly impact your health. If you consume water with harmful substances, bacteria, or metalloids, it could create serious issues. While not a metal, arsenic is considered a metalloid because it contains many of the same properties as metallic elements. Typically found in soil, arsenic is harmful when ingested. Unfortunately, many Americans unknowingly ...
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Native trees for environmental quality assessment in an ecological corridor of Atlantic Forest
Brazil has a mega biodiversity concentrated primarily in forest areas such as the Atlantic Forest, one of the most endangered ecosystems in the world. The Serra do Mar State Park (SMSP) in Sao Paulo state is the largest conservation unit of the Atlantic Forest, with both well-preserved and impacted areas such as Picinguaba and Itutinga-Piloes nuclei, respectively. Bioaccumulation patterns of ...
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Properties and Behavior of Inorganics in Contaminated Soil
Often, specific technologies may be ruled out, or the list of potential technologies may be immediately narrowed, on the basis of the presence or absence of one or more of the chemical groups. The relative amounts of each may tend to favor certain technologies. Metals may be found in the elemental form, but more often they are found as salts mixed in the soil. At the present time, treatment ...
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Use of earthworms (Eisenia fetida) and vermicompost in the processing and safe management of hazardous solid and liquid wastes with high metal contents
Two feasibility studies using the earthworm (Eisenia fetida) and vermicompost in the processing and remediation of solid and liquid wastes with high metal content are presented: vermicompost as adsorbent substrate for remediation of wastewaters contaminated with metals; earthworms for remediation of arsenic (As) and mercury (Hg) in landfill soils. The feasibility of vermicompost for the ...
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Arsenic wood field testing kit
Now available from Industrial Test Systems, Inc. is a quick, easy, field test kit that can confirm the presence of inorganic arsenic in wood. Arsenic Quick™ 481396-W kit is a modification of the US Patented, ETV Verified arsenic test for drinking water. This 10 minute test readily confirms the absence or presence of arsenic in any wood sample, including CCA treated lumber using safe ...
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Mobilization of soluble and dispersible lead, arsenic, and antimony in a polluted, organic-rich soil - effects of pH increase and counterion valency
Received for publication May 23, 2008. Liming is a common technique suggested for the stabilization of shooting range sites. We investigated the effect of an increase in pH on the mobilization of soluble and dispersible (colloidal) Pb, As, and Sb. Our hypothesis was that the addition of divalent cations counteracts the pH-induced mobilization of soluble and colloidal metal(loid)s. We determined ...
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Metals Stabilization Using Geochemical Fixation
Introduction To Chemical Fixation There are several approaches to treatment of chromium and other toxic metals such as lead arsenic, and cadmium in soil and groundwater, including isolation, immobilization, toxicity reduction, physical separation, and extraction (U.S. EPA. 2002). Brief Overview Of Metals Remediation Methods: Conventional Methods: Conventional approaches to ex-situ remediation ...
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How Installing Arsenic Drinking Water Treatment Can Save Your Life
Arsenic is an element so associated with its toxicity and harmful effects on the human body that the word itself is often used for any kind of general poison. While the exact ways that exposure to the metalloid attacks various organs and systems is still not fully understood, studies throughout the scientific community are continually determining that ingesting arsenic through drinking water can ...
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The 5 Benefits of Professional Arsenic Removal from Water
It is a sad and scary truth, but many homes have arsenic in their water systems. High levels of arsenic can be dangerous to you, your family, your pets, and the property you inhabit. Do not panic, though. Simply research an arsenic filtration system. There are many advanced methods that can be used to remove arsenic from water. Arsenic in water removal is completely affordable and safe. Below ...
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Surprising Methane-Arsenic Connection
Researchers have discovered that methane can fuel release of the toxic metalloid from sediment Arsenic toxicity now plagues many surface water and groundwater resources worldwide, with widespread and tragic consequences for public health in countries including Vietnam and Bangladesh. When microorganisms “eat” substances that contain the toxic metalloid, they release it into drinking ...
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Arsenic biotransference to alfalfa (Medicago sativa)
The arsenic (As) concentration in the edible part of crops depends on the availability of the As present in the soil and the ability of a crop to take up As and translocate it to the target organs. The aim of this study was the determination of As concentration in soils and alfalfa (Medicago sativa) in field conditions and pot experiments to analyse As soil–forage transference. Results show that ...
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