Analysis of organic contaminants on Si wafers with TXRF-NEXAFS

Pepponi, G.; Beckhoff, Burkhard; Ehmann, T.; Ulm, G.; Streli, Christina; Fabry, L.; Pahlke, S.; Wobrauschek, P.

doi:10.1016/s0584-8547(03)00217-9

Cited by 28 publications

(15 citation statements)

References 14 publications

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“…Recently, total reflection has also been combined with extended X-ray absorption fine structure (EXAFS) [36][37][38], and with X-ray absorption near edge-structure (XANES) also called NEXAFS [39][40][41]. These methods are performed with synchrotron excitation.…”

Section: Trends Of Txrf In Surface-and Thin-layer Analysismentioning

confidence: 99%

Challenges of total reflection X-ray fluorescence for surface- and thin-layer analysis

Klockenkämper

2006

Spectrochimica Acta Part B: Atomic Spectroscopy

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Section: Trends Of Txrf In Surface-and Thin-layer Analysismentioning

confidence: 99%

Challenges of total reflection X-ray fluorescence for surface- and thin-layer analysis

Klockenkämper

2006

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…Furthermore, it allows the extension of XAS to the trace element level in droplet samples, where only small amounts are available 4,5 and even in the low energy range, but by using a plane grating monochromator. 9 Various publications describing the method of x-ray absorption analysis for the speciation of arsenic in samples with As concentrations in the ppm range can be found Ł Correspondence to: F. Meirer, Atomic Institute, Vienna University of Technology, Stadionallee 2, A-1020 Vienna, Austria. E-mail: fmeirer@ati.ac.at in the literature.…”

Section: Introductionmentioning

confidence: 99%

Application of synchrotron‐radiation‐induced TXRF‐XANES for arsenic speciation in cucumber (Cucumis sativus L.) xylem sap

et al. 2007

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Synchrotron-radiation-induced total reflection x-ray fluorescence (SR-TXRF) analysis was used for x-ray absorption near edge structure (XANES) measurements for the speciation of arsenic in cucumber (Cucumis sativus L.) xylem sap. The objective of the presented work was to exploit the advantages of the TXRF geometry for XANES analysis. Measurements were accomplished at the bending magnet beamline L of HASYLAB, Hamburg, Germany, using a Si(111) double crystal monochromator and a silicon drift detector (SDD). Experiments were performed by growing cucumber plants in hydroponics containing arsenite [As(III)] or arsenate [As(V)] in order to identify the arsenic species of the collected xylem saps by K-edge SR-TXRF XANES. Cucumber xylem saps, as well as nutrient solutions containing arsenic in the two above-mentioned species, were analyzed and compared with arsenate and arsenite standard solutions. Arsenic speciation in xylem sap down to 30 ng/ml (30 ppb) was achieved, and no alteration of the oxidation state was observed during the measurements. Analysis of xylem saps showed that As(V) taken up from the nutrient solution was reduced to As(III). As(III) contained in the nutrient solutions was found to be partially oxidized to As(V). These results confirmed the preliminary measurements obtained with flow injection analysis (FIA) and high-performance liquid chromatography-high resolution inductively coupled plasma mass spectrometry (HPLC-HR-ICP-MS) and showed the competitive capability of SR-TXRF XANES analysis for this application.

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“…These two bonds could also be suggested from the C1s XPS spectra. A minor peak at 402.2 eV attributes to the N‐O bond [42]. The presence of O species may arise from oxidation of the precursors during the process.…”

Section: Resultsmentioning

confidence: 99%

Diversified expression patterns of autotaxin, a gene for phospholipid‐generating enzyme during mouse and chicken development

Ohuchi

Hayashibara

Matsuda

et al. 2007

Developmental Dynamics

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Analysis of organic contaminants on Si wafers with TXRF-NEXAFS

Cited by 28 publications

References 14 publications

Challenges of total reflection X-ray fluorescence for surface- and thin-layer analysis

Challenges of total reflection X-ray fluorescence for surface- and thin-layer analysis

Application of synchrotron‐radiation‐induced TXRF‐XANES for arsenic speciation in cucumber (Cucumis sativus L.) xylem sap

Diversified expression patterns of autotaxin, a gene for phospholipid‐generating enzyme during mouse and chicken development

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