Status of trace and toxic elements pollution in creek ecosystem using TXRF method

Yadav, V. B.; Jha, S. K.

doi:10.1007/s10967-012-2095-1

Cited by 10 publications

(4 citation statements)

References 2 publications

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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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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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“…Inorganic pollutants monitoring in waters is usually performed by sensitive multielemental techniques such as ICP-MS, which allow the direct analysis of liquid samples. However, XRF has also been used for the determination of inorganic pollutants in different types of water samples including drinking (Borgese et al, 2014), rain (Dhara and Misra, 2011), river (Melquiades et al, 2011), ground (Espinoza-Quiñones et al, 2015, thermal (Marguí et al, 2010a), waste (Marguí et al, 2010d) and sea (Peng et al, 2012;Yadav and Jha, 2013) waters. In some environmental studies it is also of special interest the determination of inorganic E. Marguí et al pollutants in soil extracts and extraction solutions used, for instance, to simulate rain water-soil interactions and the so-called total metal free content in soils, among others.…”

Section: Water and Aqueous Extractsmentioning

confidence: 99%

X-ray fluorescence spectrometry for environmental analysis: Basic principles, instrumentation, applications and recent trends

2022

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“…In the former case, TXRF analysis is used for the elemental analysis of contamination on silicon wafers. [1][2][3] In the latter, TXRF is applied for trace elemental analysis of samples including environmental samples such as soil [4][5][6] , seawater [7][8][9] , air particles [10][11][12][13][14][15] , and beverages [16][17][18][19] as well as biological samples such as blood [20][21][22] , urine [23] , and human hair [24] placed on a flat substrate. For example, a small volume of tap water can be dropped on an optically flat substrate, and the dried residue is measured by TXRF.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of analysis volume in total reflection X‐ray fluorescence analysis

Tsuji¹,

Taniguchi²,

Yamaguchi³

et al. 2023

X-Ray Spectrometry

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Total reflection X‐ray fluorescence (TXRF) is widely used for trace elemental analysis, wherein a thin monochromatic X‐ray beam is typically applied at glancing angles. The actual volume of the sample measured by the instrument (analysis volume) depends on the dimensions of the X‐ray beam and glancing angle, and it is a key feature in sample preparation for TXRF analysis. Herein, the analysis volume, including the analysis region and analysis height, was experimentally evaluated. A thin Au layer approximately 5 nm thick and 1 mm in diameter was prepared at a specific position on a flat glass substrate using a vacuum evaporation device. The position of this Au layer was controlled by manipulating a mask plate with a small hole. Nine samples were prepared at different Au layer positions and analyzed at 8 azimuth angles using a tabletop TXRF instrument. Finally, the Au XRF intensity distribution was visualized on a glass substrate. It was found that the XRF emitted over a diameter of approximately 5 mm was effectively detected using the tabletop TXRF instrument. The analysis height was experimentally evaluated using a thin Au layer deposited on a polyimide film 5 mm in diameter and 5 nm thick. The Au layer height was adjusted by inserting polyimide thin films between the Au layer and the glass substrate. The Au XRF intensity drastically decreased with increasing Au layer height, suggesting that the XRF emitted from the sample is effectively detected at heights of <10 μm by using the described setup.

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Status of trace and toxic elements pollution in creek ecosystem using TXRF method

Cited by 10 publications

References 2 publications

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

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

X-ray fluorescence spectrometry for environmental analysis: Basic principles, instrumentation, applications and recent trends

Evaluation of analysis volume in total reflection X‐ray fluorescence analysis

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