TXRF analysis of soils and sediments to assess environmental contamination

Bilo, Fabjola; Borgese, Laura; Cazzago, Davide; Zacco, Annalisa; Bontempi, Elza; Guarneri, Rita; Bernardello, Marco; Attuati, Silvia; Lazo, Pranvera; Depero, Laura E.

doi:10.1007/s11356-013-2203-y

Cited by 33 publications

(22 citation statements)

References 38 publications

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“…RSD for most of the elements (Mn, Fe, Ni, Cu, and Zn) is in the range from 1 to 6.4%. Slightly higher RSD values are observed for V, 9.4%, and for Ba, from 6.5 to 24.6%, due to the reasons already discussed [22]. The highest RSD values are observed for Bi probably due to its low concentration, which is near the lowest limit of detection (LLD).…”

Section: Resultsmentioning

confidence: 81%

“…For this reason, fitting of TXRF spectra was performed considering the pile up peak of Fe K . However, as it was demonstrated in a recent publication, TXRF is a successful technique to perform quantitative analysis of soils [22]. Background levels were kept to a minimum with the use of quartz sample carriers, reducing at minimum their contact time with HF.…”

Section: Resultsmentioning

confidence: 99%

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Evaluation of Heavy Metals Contamination from Environment to Food Matrix by TXRF: The Case of Rice and Rice Husk

Bilo

Lodolo

Borgese

et al. 2015

Journal of Chemistry

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This paper is devoted to the chemical analysis of contaminated soils of India and the rice grown in the same area. Total reflection X-ray fluorescence spectroscopy is a well-established technique for elemental chemical analysis of environmental samples, and it can be a useful tool to assess food safety. Metals uptake in rice crop grown in soils from different areas was studied. In this work soil, rice husk and rice samples were analyzed after complete solubilization of samples by microwave acid digestion. Heavy metals concentration detected in rice samples decreases in the following order: Mn > Zn > Cu > Ni > Pb > Cr. The metal content in rice husk was higher than in rice. This study suggests, for the first time, a possible role of heavy metals filter played by rice husk. The knowledge of metals sequestration capability of rice husk may promote some new management practices for rice cultivation to preserve it from pollution.

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Section: Resultsmentioning

confidence: 81%

Section: Resultsmentioning

confidence: 99%

Evaluation of Heavy Metals Contamination from Environment to Food Matrix by TXRF: The Case of Rice and Rice Husk

Bilo

Lodolo

Borgese

et al. 2015

Journal of Chemistry

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“…TXRF has an advantage regarding simple and fast sample preparation. Thus, TXRF also has been applied for the analysis of environmental samples such as seawater, soil, and air particles as well as biological samples such as blood, urine, and body tissue samples . In this case, a small volume of liquid sample is dropped on an optically flat substrate and the dried residue is measured by TXRF.…”

Section: Introductionmentioning

confidence: 99%

TXRF intensity dependence on position of dried residue on sample carrier and TXRF determination of halogen in liquid samples

Tabuchi

Tsuji

2016

X-Ray Spectrometry

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Total reflection X-ray fluorescence (TXRF) spectroscopy is an effective technique for simultaneous multi-elemental trace analysis of a small volume of a sample placed on a flat substrate. An internal standard method is usually applied for quantitative TXRF analysis of liquid samples such as drinking water and environmental samples. However, it was difficult to determine Cl and Br because they were lost as volatile hydrogen halide compounds by adding an acid internal standard solution. Thus, we attempted to apply the traditional calibration curve method for the determination of halogens without internal standard. If internal standard method is not applied, the TXRF intensity drastically changes depending on the relative position of the dried residue to the detector. Therefore, we investigated the relationship between TXRF intensity and the position of dried residue relative to the detector. As a result, it was confirmed that TXRF intensity critically depended on the position of the dried residue on the sample carrier. The position of the droplet of the sample solution was carefully controlled by using an air blower in order to place the dried residue at the most effective position on the sample carrier. We could successfully make a calibration curve for Cl with a good relationship without internal standard. Finally, Cl in the NaCl solutions (0 -5 ppm, 10 μl) was successfully determined by the calibration curve method using a table-top TXRF instrument. The limit of detection of Cl was 63 ppb (ng/ml).

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“…Most geological and soil samples require major sample preparation efforts due to their high organic or inorganic matrix content, if quantitative analysis is required. Most commonly acid digestion with or without hydrofluoric acid is performed or suspensions are made using water or non-aqueous solvents [38][39][40][41]. If quantification is not the goal, but simple fingerprint analysis is sufficient, the sample can be grinded using a mortar or mill to obtain a uniform particle size.…”

Section: Environmental and Geological Applicationsmentioning

confidence: 99%

Total reflection X-ray fluorescence

Schmeling

2019

Physical Sciences Reviews

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Abstract Total reflection X-ray fluorescence (TXRF) spectrometry is a non-destructive and surface sensitive multi-element analytical method based on energy dispersive X-ray fluorescence spectrometry with detection limits in the lower picogram range. It utilizes the total reflection of the primary X-ray beam at or below the critical angle of incidence. At this angle, the fluorescence intensity is substantially enhanced for samples present as small granular residue or as thin homogenous layer deposited at the surface of a thick substrate. Generally, two types of application exist: micro- and trace-analysis as well as surface and thin-layer analysis. For micro- and trace-analysis, a small amount of the solid or liquid sample is deposited on an optically flat substrate, typically quartz or polycarbonate. The dried residue is analyzed at a fixed angle setting slightly below the critical angle. Quantification is carried out by means of internal standardization. For surface and thin-layer analysis, the surface of an optically flat substrate is scanned. Variations of the incident angle of the primary X-ray beam provide information about the type and sometimes also the amount of material present at or slightly below the surface of the substrate. Major fields of application are environmental samples, biological tissues, objects of cultural heritage, semiconductors and thin-layered materials and films.

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TXRF analysis of soils and sediments to assess environmental contamination

Cited by 33 publications

References 38 publications

Evaluation of Heavy Metals Contamination from Environment to Food Matrix by TXRF: The Case of Rice and Rice Husk

Evaluation of Heavy Metals Contamination from Environment to Food Matrix by TXRF: The Case of Rice and Rice Husk

TXRF intensity dependence on position of dried residue on sample carrier and TXRF determination of halogen in liquid samples

Total reflection X-ray fluorescence

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