Arsenic fractionation in sediments of different origins using BCR sequential and single extraction methods

Baig, Jameel Ahmed; Kazi, Tasneem Gul; Arain, Mohammad Balal; Shah, Abdul Qadir; Sarfraz, Raja Adil; Afridi, Hassan Imran; Kandhro, Ghulam Abbas; Jamali, Mohammad Khan; Khan, Sumaira

doi:10.1016/j.jhazmat.2009.01.040

Cited by 114 publications

(40 citation statements)

References 31 publications

(28 reference statements)

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“…As can pass from the solid phase into water when the water ionic content changes as a result of the sorption-desorption balance shift [6,16]. Even though As demonstrated increased mobility, its RAC value did not exceed 35%.…”

Section: Bioavailability and Mobility Of Elements With The Applicatiomentioning

confidence: 96%

Impact of Mining Dump on the Accumulation and Mobility of Metals in the Bytomka River Sediments

Jabłońska‐Czapla¹,

Szopa²,

Rosik-Dulewska³

2014

Archives of Environmental Protection

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Abstract:The research aim was to determine the long-term impact of the mine waste stored at the coal waste dump Hałda Ruda on the content of heavy metals in the bottom sediments of the Bytomka River. It is a watercourse fl owing along this coal waste dump and has been under its infl uence for over fi fty years. The research also attempted to determine the seasonality of changes (2 years) and mobility of selected elements.The article presents total contents of Cr, Mn, Ni, Cu, Zn, As, Cd and Pb in the bottom sediments collected from the Bytomka River. It also focuses on the distribution of these elements in particular geochemical fractions determined with the Tessier's sequential chemical extraction procedure. Total element contents were determined with an EDPXRF (Energy Dispersive X-ray Fluorescence) technique. The extractants of particular Tessier's fractions were determined quantitatively with an ICP-MS (Inductively Coupled Plasma Mass Spectrometry) spectrometer. The research results show that the stored waste signifi cantly infl uences the contents of heavy metals in the Bytomka River bottom sediments. The lowest concentration of heavy metals was observed at the B1 spot (above the dump), while the highest one was measured at the B3 spot (below the dump).Sequential chemical extraction of the bottom sediments indicates that the Zn content in the ion-exchange and carbonate fractions diminished within a year. Nevertheless, Zn bound to Fe and Mn oxides acted in the opposite way. Mn, Zn and Pb are the most dangerous elements from the viewpoint of environmental hazards, as their total concentrations were high. Moreover, their high contents were observed in the most mobile (ion-exchange and carbonate) fractions. Extremely toxic Cd was bound to the oxide fraction to the largest extent. Cu was mainly bound to the organic fraction while environmentally hazardous Cr was bound to the residual fraction.

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Section: Bioavailability and Mobility Of Elements With The Applicatiomentioning

confidence: 96%

Impact of Mining Dump on the Accumulation and Mobility of Metals in the Bytomka River Sediments

Jabłońska‐Czapla¹,

Szopa²,

Rosik-Dulewska³

2014

Archives of Environmental Protection

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“…The average content of TAs was found to be 43.5 μg L -1 in groundwater samples of our area, higher than the permissible limit of WHO but less than other countries as reported elsewhere. 1,[3][4][5][6] This is due to the natural processes and anthropogenic activities i.e., pesticides and insecticides used for agricultural lands, untreated waste water sewage sludge as agricultural fertilizer and synthetic fertilizers. 3,24,30,32,33 The obtained results showed some significant differences among the concentration of organic and inorganic species of As in two sampling locations of groundwater ( Table 2).…”

Section: ×100mentioning

confidence: 99%

“…1 As exists in water primarily as the inorganic oxyanions of arsenite As III and arsenate As V , with As III predominating in anaerobic waters and As V prevailing in oxic waters. [2][3][4][5] Recent surveys about arsenic redox speciation in groundwater, which is a major source of drinking water throughout the world, 6 suggest that inorganic As can represent >67% of total As in groundwater. 7 Therefore, the trace determination of inorganic As species in surface and groundwater is important, because of their high toxicity and ability to bioaccumulate in many organisms and its abundance in all environmental compartments.…”

Section: Introductionmentioning

confidence: 99%

Inorganic Arsenic Speciation in Groundwater Samples Using Electrothermal Atomic Spectrometry Following Selective Separation and Cloud Point Extraction

et al. 2011

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A method has been developed for speciation of total, total inorganic and organic arsenic (As) species in groundwater samples. The inorganic species of As (III,V) were separated from organic forms by adsorbing on alumina (Al2O3) whereas the organic As was eluted out. The retained inorganic As species was eluted by 0.2 M HCl. Then eluent As III and As V were formed as complexes with ammonium pyrrolidinedithiocarbamate (APDC) and molybdate, respectively. Then As III -PDC and As V -molybdate complexes were quantitatively extracted into a non-ionic surfactant Triton X-114. The total As was determined by conventional preconcentration procedures. The resulting solutions of each method were determined by ETAAS with modifier. The main factors affecting the separation and cloud point extraction (CPE) were investigated in detail. The limits of detection values were found as 0.04 and 0.20 μg L -1 for As III and As V , respectively, whereas limits of quantification were observed as 0.13 and 0.33 μg L -1 for As III and As V , respectively. Standard addition method confirmed the accuracy. The recoveries of As III and As V were found in the range of 98 -99%. The proposed method was applied to groundwater samples collected from different areas of Sukkur district.

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“…Subsequently, this scheme was improved as a result of further collaborative studies (Rauret et al 1999). In this study, a revised version of the BCR sequential extraction procedure was used to test the HM phases (Baig et al 2009;Rauret et al 1999;Van Herreweghe et al 2003). In brief, the forms of HMs were classified into exchangeable (water and acid-soluble, F1), easily reduced (Fe/Mn oxyhydroxides, F2), oxidizable (organic matter and sulfides, F3), and residual fraction (F4).…”

Section: Bcr Sequential Extractionmentioning

confidence: 99%

Factors influencing the heavy metal bioaccessibility in soils were site dependent from different geographical locations

Zhu

Yang

Wei

2015

Environ Sci Pollut Res

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A soil survey was conducted in urban areas from five sites, including Beijing, Baotou, Datong, Fuyang, and Xiantao in China. The objective was to explore the most significant factors that may impact the bioaccessibility of heavy metals (Bio-HMs), including As, Cr, Cu, Pb, and Zn, in soils. Twenty to 30 composite soil samples were collected at each site. The various soil properties, including pH, particle size, Fe/Mn, and organic matter contents, were analyzed. The chemical operated forms of HMs in soils were measured by the Bureau of Reference (BCR) sequential extraction scheme, while the Bio-HMs were determined by the simple bioaccessibility extraction test (SBET) procedure. The concentrations of total heavy metals (T-HMs) in soils from different sites (cities) were in the range as As (5.69-9.86), ) mg/kg. Cu and Pb had higher relative bioaccessibilities (48-70 %) than those of As and Cr (6-15 %), indicating higher health risks of the former than the latter two HMs. The Bio-HMs for various HMs were comparable to the first two or three combined BCR extracted fractions, with an exception of Cu, whose Bio-HMs were larger than the combined three BCR fractions, indicating that Cu was highly accessible in soils as compared with other HMs. Factor analysis showed that all variables, including soil property parameters and BCR extracted fractions, could be represented by three common factors extracted with higher than 0.5 loadings and ∼80 % cumulative contribution to the total variance. Among the three common factors, factor 1, containing mainly pH, texture, and Fe/Mn variables, and factor 3, containing mainly organic matter variable, could be attributed to geographical regions, while factor 2, containing mainly BCR extracted fractions, could be ascribed to relative bioaccessibility of HMs (R-Bio-HMs). Interactive mapping of the main factors and cluster analysis were consistent, which supported the Bsite gathering^of the soil sample pools, suggesting that the BioHMs in soils in different geographical localities were site dependent.

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Arsenic fractionation in sediments of different origins using BCR sequential and single extraction methods

Cited by 114 publications

References 31 publications

Impact of Mining Dump on the Accumulation and Mobility of Metals in the Bytomka River Sediments

Impact of Mining Dump on the Accumulation and Mobility of Metals in the Bytomka River Sediments

Inorganic Arsenic Speciation in Groundwater Samples Using Electrothermal Atomic Spectrometry Following Selective Separation and Cloud Point Extraction

Factors influencing the heavy metal bioaccessibility in soils were site dependent from different geographical locations

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