scholarly journals Manganese fractionation analysis in specific soil and sediment samples

2021 ◽  
Vol 9 (3) ◽  
Author(s):  
Gabriela Nádaská ◽  
Kristína Polčová ◽  
Juraj Lesný
Keyword(s):  
Sequential Extraction ◽  
Microwave Digestion ◽  
Total Content ◽  
Soil Samples ◽  
High Manganese ◽  
Sediment Samples ◽  
Stripping Chronopotentiometry ◽  
Fractionation Analysis ◽  
Sequential Extraction Procedures ◽  
Soil And Sediment

Manganese has been determined in soil- and sediment samples taken from selected regions with high manganese concentrations anthropogenic and/or geogenic. The total content of manganese in chosen sediment- and soil samples has been determined applying FAAS after microwave digestion and the manganese fractions after sequential extraction procedures using galvanostatic stripping chronopotentiometry. The highest content of manganese has been determined in sediment from Hôrka (6243.6 ± 56.2 mg kg-1), while the lowest value has been obtained in the sediment from Kráľová (278.6 ± 3.9 mg kg-1). Using a modified Tessier’s procedure it was found, that manganese in sediments from Kráľová is associated mainly with the carbonate fraction (>50%), while in sediments from Lozorno and Hôrka it is associated primarily with the Mn and Fe oxide fraction (80% and 42% respectively).

SIMPLE MICROWAVE DIGESTION TECHNIQUE FOR ELEMENTAL ANALYSIS OF MINERAL SOIL SAMPLES

1990 ◽  
Vol 70 (4) ◽  
pp. 617-620 ◽  
Author(s):  
C. J. WARREN ◽  
B. XING ◽  
M. J. DUDAS
Keyword(s):  
Inductively Coupled Plasma ◽  
Soil Analysis ◽  
Microwave Digestion ◽  
Mineral Soil ◽  
Total Content ◽  
Soil Samples ◽  
Elemental Abundance ◽  
Emission Spectrometry ◽  
Plasma Atomic Emission Spectrometry ◽  
Digestion Technique

A new, rapid, and inexpensive method is described for digestion and dissolution of mineral soil and clay samples for determination of total elemental abundance. Standard soil samples were dissolved using HF and HNO3 in 60 mL Teflon bombs. Dissolution was complete after 7 min using a household microwave oven operating at 350 W. Addition of H3BO3 stabilized the digests against loss of silicon. Precise and accurate results were obtained for digests analyzed by inductively coupled plasma atomic emission spectrometry for total content of Si, Al, Fe, Mg, Ca, Na, K, and Mn. Key words: Elemental composition, standard soils, soil analysis

EVALUATION OF LEACHING AND BIOAVAILABILITY OF HEAVY METALS FROM INDUSTRIAL BIOMASS ASHES

2017 ◽  
Vol 167 (47) ◽  
pp. 18-33
Author(s):  
Justyna Koniuszy-Nycz
Keyword(s):  
Sequential Extraction ◽  
Ph Effect ◽  
Microwave Digestion ◽  
Extraction Procedure ◽  
Total Content ◽  
Water Soluble ◽  
Test Material ◽  
Biomass Combustion ◽  
Solution Ph ◽  
Biomass Ashes

The purpose of the study was to evaluate the total content, leachability and bioavailability of Fe, Zn, Cu, Cr, Cd, Pb, Ni, Co in industrial ashes obtained from biomass combustion. It was found that metals occur in the test material as: macronutrient - iron (0,67 %), micronutrients - zinc (335,0 mg/kg), nickel (145,0 mg/kg), lead (110,0 mg/kg), copper (100,0 mg/kg), cobalt (25,0 mg/kg), chrome (15 mg/kg) and trace amount of cadmium (10,0 mg/kg). It was claimed that leachability of metals from ash depends on pH of solution and ranges from 1 mg/kg for (Cu, Cd, Ni, Fe) to 4 – 5 mg/kg for (Cr, Co) respectively. It was also found that lead was not extracted from ash, using water as extractant regardless of solution pH. In all experiments no regularities in the pH effect of metal leachability in the investigated systems were observed. Tessier sequential extraction procedure was used to evaluate the mobility and bioavailability of metals, which was carried out conventionally and with aid of microwave digestion. In all experiments the following metal fractions were characterized: water-soluble, exchangeable, acid-soluble, oxide, pseudosulfide and residual fractions respectively. It has been found that the use of microwave mineralization during sequential extraction increases the efficiency of the release of most of the tested metals.

Sequential Extraction of Vanadium in Different Soil Samples Using Conventional and Ultrasonic Devices

2013 ◽  
Vol 96 (3) ◽  
pp. 650-656 ◽  
Author(s):  
Sumaira Khan ◽  
Tasneem Gul Kazi ◽  
Nida Fatima Kolachi ◽  
Imran Afridi ◽  
Naeem Ullah
Keyword(s):  
Sequential Extraction ◽  
Thermal Power ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Total Content ◽  
Standard Addition ◽  
Absorption Spectrometry ◽  
Soil Samples ◽  
Bcr Sequential Extraction ◽  
Sequential Extraction Method ◽  
Agricultural Areas

Abstract A rapid ultrasound accelerated sequential extraction (USE) procedure was used to develop chemical partitioning of vanadium (V), proposed by the Community Bureau of Reference/European Union Measurement and Testing Programme (BCR). The effects of ultrasonic treatment on the extraction of V in different soil samples collected from the vicinity of a thermal power plant and agricultural areas of Sindh, Pakistan, were evaluated. In the conventional BCR-sequential extraction method, each extraction step takes 16 h. With the use of ultrasound energy, Steps 1–3 of the USE procedure (excluding the hydrogen peroxide digestion in Step 3, which was performed conventionally) could be completed in 45, 40, and 45 min, respectively. Analysis of the extracts was performed by electrothermal atomic absorption spectrometry. The total contents of V were obtained by digestion with two acid mixtures: H2O2–HF–HNO3–H2SO4 and HClO4–HF–HNO3–H2SO4. Validation was performed by the standard addition technique. Results obtained for each fraction by both methods were statistically compared; no significant differences were found (P < 0.05). The accuracy of the USE procedure was checked by comparing the sum of the V contents in the three fractions and residue with the total content of V. The results of this work provide information on the chemical composition, distribution, and potential mobility of the V in different soils.

Occurrence, Distribution and Ecological Risk Assessment of Toxic, Trace and Rare Earth Elements in Soils and Sediments of Active Dumpsites of Lagos State, Nigeria

2021 ◽  
Vol 47 (2) ◽  
pp. 258-270
Author(s):  
Olanrewaju O. Olujimi ◽  
Kabirat I. Adegbite ◽  
Oliver Steiner ◽  
Walter Goessler ◽  
Funmilola F. Oyebanji ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Rare Earth ◽  
Rare Earth Elements ◽  
Ecological Risk ◽  
Ecological Risk Assessment ◽  
Soil Samples ◽  
Health Concern ◽  
Sediment Samples ◽  
Lagos State ◽  
Soil And Sediment

The multiple uses of metals in several applications worldwide have steadily increased human exposure to these toxicants globally and are currently of ecological and public health concern. This study reported the occurrence and ecological risk assessment of 33 elements including toxic, trace, and rare earth elements from five selected dumpsites in Lagos state. A total of 195 soil and 72 sediment samples were collected, air-dried, sieved, digested using the autoclave method and analyzed with ICP-MS 7700 along with BCR 723 and NIST 2711a as reference materials. All the 33 elements determined in the dumpsites soil samples were detected except Be and Lu in soil samples from Abule-Egba dumpsite. Also, Be, Hg and Lu were not detected in Abule-Egba, Epe and Olusosun sediment samples. The concentrations of all the metals varied widely across the investigated sites with Abule-Egba dumpsite having the highest concentration of most of the metals analyzed and Epe dumpsite having the lowest concentration (being the newest dumpsite of all the sites investigated). The distribution pattern of the toxic elements in Abule Egba is Al>Pb>Ba>Cd>Sn>V>Ag>As>Th>Hg>Be. The geo-accumulation index showed that Abule-Egba soil and sediment were strongly polluted with Pb and As while the sediment was extremely polluted with Cr, Cu and Zn. Abule-Egba dumpsite poses high ecological risk as Cd, Cu, Ni, Zn and Cr were above the CCME (1999) guideline. The ΣRI showed that Abule-Egba dumpsite soil and sediment poses very high ecological risk which showed an increase by a factor of 3 and 14 for soil and sediment, respectively.

Understanding the partitioning processes of mobile lead in soakaway sediments using sequential extraction and isotope analysis

2009 ◽  
Vol 60 (8) ◽  
pp. 2085-2091 ◽  
Author(s):  
Manish Kumar ◽  
Hiroaki Furumai ◽  
Futoshi Kurisu ◽  
Ikuro Kasuga
Keyword(s):  
Sequential Extraction ◽  
Isotope Analysis ◽  
Residual Fraction ◽  
Bcr Sequential Extraction ◽  
Mixing Processes ◽  
Sediment Samples ◽  
Bottom Soil ◽  
Sampling Locations ◽  
The Difference ◽  
Soil And Sediment

Lead (Pb) isotopic data were used in this study to first distinguish the partitioning of anthropogenic and natural lead in different fractions, obtained by BCR sequential extraction, and then to anticipate their mixing process in the soakaway sediment of artificial infiltration facilities (AIF). Total metal content was found higher in soakaway sediment samples than that of soil. The lowest 206Pb/207Pb ratios were mostly observed in exchangeable fractions of soil and sediment samples, while residual fractions mostly showed the highest 206Pb/207Pb and 208Pb/207Pb ratios than those of other fractions. In general, both ratios were higher in the soil than those of sediments. Further among soil samples, residual fraction of bottom soil exhibited higher ratios than surface soil indicating higher contribution of natural lead with depth. In addition, the difference in Pb content, partitioning and its isotope signature among four sediment samples were also investigated considering their sampling locations. The plot of 206Pb/207Pb versus 208Pb/207Pb showed two well demarcated cluster formations by soil and sediments samples that describe the partitioning between anthropogenic and natural lead; and some points falling in between soil and sediment samples pertinently illustrated the mixing processes between these two different pools of lead.

Determination of heavy metal content in surface sediments and soil from the River Nile Khartoum City (Sudan)

2020 ◽  
Author(s):  
Muna I. Shumo ◽  
Mazin M. Mohammed ◽  
Hawa A. Musa ◽  
Tarig Osman Khider
Keyword(s):  
Heavy Metals ◽  
Surface Sediments ◽  
Anthropogenic Activities ◽  
Soil Samples ◽  
River Nile ◽  
Sediment Properties ◽  
Sediment Samples ◽  
Enhanced Mobility ◽  
Soil And Sediment

Abstract The surface sediment and surface soil samples were taken from the River Nile (Abroof, Shambat, AL-Halfaia, and AL-Hetana), Khartoum, to determine the available levels of Lead (Pb), Zinc (Zn), and Cadmium (cd) to establish a baseline concentration of each of these available metals, and to investigate their possible correlations with soil and sediment properties. The content of each of the three heavy metals in soil and sediment samples was determined using atomic absorption spectroscopy, AAS.The values of Zinc in the soil and sediment samples, were found to be between (0.192 to 0.294 ppm) and (0.101 to 0.181) respectively, showing the highest content in soil and sediment samples in Shambat (S) and Abroof (A), and the lowest values recorded for samples in AL-Halfia (H) and AL-Hetana (E). While Lead content was ranged between (0.105 to 0.136 ppm) for soils samples (AL-Hetana(E) and Shambat(S)), and (0.078 to 0.141) for sediment samples (Abroof(A) and shambat (S)). Whereas, content for Cadmium ranged between (0.010 to 0.015 ppm) for soil samples Shambat, AL-Hetana and Abroof and (0.011 to 0.016) for sediment samples Shambat, AL-Halfia and Abroof.Soil and sediment physicochemical properties (pH, temperature & conductivity) were found to be correlated with the available heavy metals content, suggesting that the enhanced mobility of heavy metals are related to anthropogenic activities, the high percentage of organic carbon in soil (11.6%) and sediment (15.0%).

scholarly journals Investigation of cesium adsorption on soil and sediment samples from Fukushima Prefecture by sequential extraction and EXAFS technique

2012 ◽  
Vol 46 (4) ◽  
pp. 297-302 ◽  
Author(s):  
HAIBO QIN ◽  
YUKA YOKOYAMA ◽  
QIAOHUI FAN ◽  
HOKUTO IWATANI ◽  
KAZUYA TANAKA ◽  
...  
Keyword(s):  
Sequential Extraction ◽  
Sediment Samples ◽  
Fukushima Prefecture ◽  
Soil And Sediment
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