نتایج جستجو برای: bcr sequential extraction

تعداد نتایج: 260300  

Journal: :international journal of environmental research 0
e.o. okuku kenya marine and fisheries research institute, p.o. box 81651, mombasa, kenya, soil and water management division, faculty of bioscience engineering, katholieke universiteit leuven, kasteelpark arenberg 20, b-3001 heverlee, belgium h.k. peter tanzania fisheries research institute, p.o. box 9750, dar es salaam, tanzania

the study aimed to come up with a list of specific macroalgae species, which could be used to biomonitor specific metal elements in the coastal waters of east africa. water extraction, edta, aqua regia extraction and optimized bcr 3-step sequential extracts were used to mimic bioavailable metals under various environmental conditions. the results indicated that ulva lactuca could be used as a b...

Journal: :international journal of environmental research 2013
b. gonzález-corrochano j. alonso-azcárate m. rodas

the chemical extraction of twenty-nine elements in a washing aggregate sludge, a clay-richsediment, a sewage sludge, the mixtures of these materials and the artificial lightweight aggregates (lwas)manufactured with them was determined by applying the optimized european community bureau of reference sequential extraction procedure in order to establish the effect of the thermal treatment on the ...

Journal: :international journal of environmental research 2011
e.o. okuku h.k. peter

the study aimed to come up with a list of specific macroalgae species, which could be used to biomonitor specific metal elements in the coastal waters of east africa. water extraction, edta, aqua regia extraction and optimized bcr 3-step sequential extracts were used to mimic bioavailable metals under various environmental conditions. the results indicated that ulva lactuca could be used as a ...

2013
Qingsong HE Yue REN Ibrahim MOHAMED Maha ALI Waseem HASSAN Fangui ZENG

He Q., Ren Y., Mohamed I., Ali M., Hassan W., Zeng F. (2013): Assessment of trace and heavy metal distribution by four sequential extraction procedures in a contaminated soil. Soil & Water Res., 8: 71–76. Four sequential extraction procedures (Sposito, Tessier, Silveira and Bureau Communautaire de Reference (BCR)) were used to evaluate the distribution of some metals (Fe, Cu, Cd and Zn) in a co...

Journal: :Journal of Geochemical Exploration 2021

Single and sequential extractions are current useful tools for estimating the availability of metals in soils or sediments. Many chemical extraction procedures have been proposed literature, making comparison difficult. This study compares data consistency potential given by four commonly found literature: two single (using dilute HCl EDTA as reactant) (the modified standardized 3-steps procedu...

Journal: :international journal of environmental research 2011
a. alimohammad kalhori h.r. jafari a.r. yavari e. prohić t. ahmadzadeh kokya

this study was conducted in assaluyeh region, southwest of iran to show utilization and efficiency of sequential extraction analysis in environmental impact studies using soil and related regolith materials as sample media. in order to investigate distribution of heavy metals, optimized bcr (community bureau of reference) sequential extraction analysis method was used. in this caseeight repres...

Journal: :international journal of environmental research 0
a. alimohammad kalhori department of environmental management & planning, graduatefaculty of environment, university of tehran,tehran, iran h.r. jafari department of environmental management & planning, graduatefaculty of environment, university of tehran,tehran, iran a.r. yavari department of environmental management & planning, graduatefaculty of environment, university of tehran,tehran, iran e. prohić department of geology, faculty of sciences, university of zagreb, zagreb, croatia t. ahmadzadeh kokya department of environmental engineering, graduate faculty of environment, university of tehran, tehran, iran

this study was conducted in assaluyeh region, southwest of iran to show utilization and efficiency of sequential extraction analysis in environmental impact studies using soil and related regolith materials as sample media. in order to investigate distribution of heavy metals, optimized bcr (community bureau of reference) sequential extraction analysis method was used. in this caseeight represe...

2013
Mikko Mäkelä Risto Pöykiö Gary Watkins Hannu Nurmesniemi

Trace element speciation of an integrated soil amendment matrix was studied with a modified BCR sequential extraction procedure. The analysis included pseudo-total concentration determinations according to USEPA 3051A and relevant physicochemical properties by standardized methods. Based on the results, the soil amendment matrix possessed neutralization capacity comparable to commercial fertili...

Journal: :Chemosphere 2009
Hui Pan Chung-Yun Hse Robert Gambrell Todd F Shupe

Chromated copper arsenate (CCA)-treated wood was liquefied with polyethylene glycol/glycerin and sulfuric acid. After liquefaction, most CCA metals (98% As, 92% Cr, and 83% Cu) were removed from liquefied CCA-treated wood by precipitation with calcium hydroxide. The original CCA-treated wood and liquefied CCA-treated wood sludge were fractionated by a modified Community Bureau of Reference (BCR...

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