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- W2101471515 abstract "In the last decades, total reflection X-ray fluores cence (TXRF) analysis was proven to be an easy and versatile method for the determination of trace ele ments [1]. TXRF can be applied to different sample types, like solids in form of micro fragments, powd ers, suspensions, thin films or liquids. The requir ed sample amount is in the low µg or µl range, respectively. In TXRF the samples are prep ared as thin film or layer, thus matrix effects are negligible. Quantifi cation is possible by means of the known concentrat ion of an internal standard element. However, because of the large size and high operati ve costs, the application of this method was restri cted to large research and development laboratories. But re cently with the introduction of low-power benchtop instruments, this analytical method starts to get e stablished even in small laboratories for research or routine applications. This has opened new doors in the rapidly growing fi eld of Phytoforensic chemistry. This presentation w ill present a brief outline of the instrumental design and theory of TXRF followed by case studies demonstrating how the technique is utilized in ever y day laboratory analysis. In particular, heavy met al contamination, particle contamination and lot compa rison profiling of dietary supplement products will be presented. “Fingerprinting” or Authentication of pr oducts can be readily done using TXRF derived concentrations or the spectra with principal compon ent analysis techniques." @default.
- W2101471515 created "2016-06-24" @default.
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- W2101471515 date "2009-06-01" @default.
- W2101471515 modified "2023-09-26" @default.
- W2101471515 title "F-51 Trace Element Analysis of Dietary Supplements and Nutrients by TXRF" @default.
- W2101471515 cites W6099605 @default.
- W2101471515 doi "https://doi.org/10.1154/1.3175964" @default.
- W2101471515 hasPublicationYear "2009" @default.
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