WFRF:(Thungström Göran)
Search: WFRF:(Thungström Göran) > Signal-to-Noise Rat...
- 10 of 130
- Previous record
- Next record
- To hitlist
- An, SiwenMittuniversitetet,Institutionen för elektronikkonstruktion,Radiation Sensor Systems,Mittuniversitet (author)
Signal-to-Noise Ratio Optimization in X-ray Fluorescence Spectrometry for Chromium Contamination Analysis
- Article/chapterEnglish2021
Publisher, publication year, extent ...
- Elsevier BV,2021
- electronicrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:miun-39934
- https://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-39934URI
- https://doi.org/10.1016/j.talanta.2021.122236DOI
- https://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-35554URI
Supplementary language notes
- Language:English
- Summary in:English
Part of subdatabase
- SwePubSwePub
Classification
Notes
- In most cases, direct X-ray fluorescence (XRF) analysis of solutions entails technical difficulties due to a high X-ray scattering background resulting in a spectrum with a poor signal-to-noise ratio (SNR). Key factors that determine the sensitivity of the method are the energy resolution of the detector and the amount of scattered radiation in the energy range of interest. Limiting the width of the primary spectrum by the use of secondary targets, or filters, can greatly improve the sensitivity for specific portions of the spectrum. This paper demonstrates a potential method for SNR optimization in direct XRF analysis of chromium (Cr) contamination. The suggested method requires minimal sample preparation and achieves higher sensitivity compared to existing direct XRF analysis. Two states of samples, fly ash and leachate from municipal solid waste incineration, were investigated. The effects of filter material, its absorption edge and filter thickness were analyzed using the combination of Monte Carlo N-Particle (MCNP) code and energy-dispersive XRF spectrometry. The applied filter removes primary photons with energies interfering with fluorescence photons from the element of interest, thus results in lower background scattering in the spectrum. The SNR of Cr peak increases with filter thickness and reaches a saturation value when further increased thickness only increases the measurement time. Measurements and simulations show that a Cu filter with a thickness between 100 μm and 140 μm is optimal for detecting Cr by taking into account both the SNR and the exposure time. With direct XRF analysis for solutions, the limit of quantitation (LOQ) of the achieved system was 0.32 mg/L for Cr, which is well below the allowed standard limitation for landfills in Sweden. This work shows that XRF can gain enough sensitivity for direct monitoring to certify that the Cr content in leachate is below environmental limits.
Subject headings and genre
- NATURVETENSKAP Kemi Analytisk kemi hsv//swe
- NATURAL SCIENCES Chemical Sciences Analytical Chemistry hsv//eng
- TEKNIK OCH TEKNOLOGIER Naturresursteknik Miljöledning hsv//swe
- ENGINEERING AND TECHNOLOGY Environmental Engineering Environmental Management hsv//eng
- NATURVETENSKAP Fysik hsv//swe
- NATURAL SCIENCES Physical Sciences hsv//eng
- NATURVETENSKAP Kemi hsv//swe
- NATURAL SCIENCES Chemical Sciences hsv//eng
- Chromium
- Environmental monitoring
- Hazardous materials
- Limit of quantitation (LOQ)
- Waste management
- X-ray fluorescence analysis (XRF)
Added entries (persons, corporate bodies, meetings, titles ...)
- Reza, Salim,1985-Högskolan i Gävle,Elektronik(Swepub:hig)samrea (author)
- Norlin, Börje,1967-Mittuniversitetet,Institutionen för elektronikkonstruktion,Mittuniversitet(Swepub:miun)bornor (author)
- Fröjdh, Christer,1952-Mittuniversitetet,Institutionen för elektronikkonstruktion,Mittuniversitet(Swepub:miun)chrfro (author)
- Thungström, Göran,1960-Mittuniversitetet,Institutionen för elektronikkonstruktion,Mittuniversitet(Swepub:miun)gorthu (author)
- MittuniversitetetInstitutionen för elektronikkonstruktion (creator_code:org_t)
Related titles
- In:Talanta: Elsevier BV2300039-91401873-3573
Internet link
- https://doi.org/10.1016/j.talanta.2021.122236Fulltext
- https://miun.diva-portal.org/smash/get/diva2:1469406/FULLTEXT01.pdffulltext:print
- https://doi.org/10.1016/j.talanta.2021.122236
- https://hig.diva-portal.org/smash/get/diva2:1542494/FULLTEXT01.pdffulltext:print
- https://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-39934
- https://doi.org/10.1016/j.talanta.2021.122236
- https://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-35554
- 10 of 130
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- An, Siwen
- Reza, Salim, 198 ...
- Norlin, Börje, 1 ...
- Fröjdh, Christer ...
- Thungström, Göra ...
- About the subject
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Chemical Science ...
- and Analytical Chemi ...
-
- ENGINEERING AND TECHNOLOGY
- ENGINEERING AND ...
- and Environmental En ...
- and Environmental Ma ...
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Physical Science ...
-
- NATURAL SCIENCES
- NATURAL SCIENCES
- and Chemical Science ...
- Articles in the publication
- Talanta
- By the university
- Mid Sweden University
- University of Gävle
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
