Investigate the capability of INAA absolute method to determine the concentrations of 238U and 232Th in rock samples

Alnour, I. A.; Wagiran, Husin; Ibrahim, Norliza; Hamzah, Suhaimi; Wee, Boon Siong; Elias, M. S.

doi:10.1007/s10967-013-2844-9

Cited by 4 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A certi ed reference material (IAEA-312) was analyzed for quality control and assurance [48]. The IAEA-312 was irradiated alongside concrete and blood samples and three standard solutions designated UTh, RR1/5, and RR2/5 to assess the reliability of the INAA [49,50]. During the measurement, each sample was assessed in triplicates.…”

Section: Quality Control and Assurancementioning

confidence: 99%

Assessment of Uranium and Thorium Co-contaminant Exposure from Incidental Concrete Dust Ingestion

Abdul Rashid,

Um,

Juhasz

et al. 2024

Korean J. Chem. Eng.

View full text Add to dashboard Cite

Potential health risks of contaminated media linked to bioavailability and hematotoxicity of uranium-238 ( 238 U) and thorium-232 ( 232 Th) remain uncertain. This study investigates the relative bioavailability (RBA), histopathological, and hematological effects of acute oral exposure to 238 U and 232 Th in cocontaminated concrete dust using 174 female Sprague Dawley (SD) rats. In order to create a range of 238 U and 232 Th concentrations, concrete was spiked with uranyl and thorium nitrates (~ 50, 100, and 200 mg kg −1 ). Spiked concretes were then crushed, ground, sieved (≤75 µm), and blended uniformly to create co-contaminated concrete dust. SD rats' diet pellet was amended with co-contaminated concrete dust and orally ingested over a 48-hour exposure period. The RBA values of 238 U and 232 Th in post-exposure rats' blood were determined as 22.0% ± 0.86% -30.8% ± 1.01% and 11.8% ± 0.14% -13.7% ± 0.29%, respectively. Compared to 232 Th, 238 U blood levels of SD rats fed with co-contaminated concrete dustamended diets were ~ 100-fold higher due to solubility differences, and 238 U-RBA values were approximately two-fold greater, revealing that their absorption rates in the gastrointestinal tract were affected by compound solubility. Post-acute 238 U and 232 Th ingestion from co-contaminated concrete dust demonstrate noticeable histopathological and hematological alterations, implying that intake of 238 U and 232 Th in co-contaminated concrete dust can lead to erythrocytes damage and elevated hematological attributes. Our study would be bene cial for an adequate understanding of the health implications caused by the acute oral exposures of 238 U and 232 Th in co-contaminated concrete dust, especially in the bioavailability and toxicity assessment.

show abstract

Section: Quality Control and Assurancementioning

confidence: 99%

Assessment of Uranium and Thorium Co-contaminant Exposure from Incidental Concrete Dust Ingestion

Abdul Rashid,

Um,

Juhasz

et al. 2024

Korean J. Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…Approximately 0.15-0.20 g from each minerals sample were transferred into polyethylene vial and sealed. Each sample was prepared in duplicate to ensure that the sample is completely homogenized and to cross-check errors that can happen during sample preparation [16].…”

Section: Figurementioning

confidence: 99%

“…Three different types of standard reference materials namely: IAEA-312, NBS (National Bureau Standards); NBS-SRM 1633A (Coal Fly Ash) and USGS (United States Geological Survey) STM-1(Syenite) were used. Approximately 0.20-0.30 g of each of CRM samples were weighted in polyethylene vial [16].…”

Section: Figurementioning

confidence: 99%

See 1 more Smart Citation

Determination of the elemental concentration of uranium and thorium in the products and by-products of amang tin tailings process

Alnour

Wagiran

Ibrahim

et al. 2017

AIP Conference Proceedings

Self Cite

View full text Add to dashboard Cite

Development of automation software for neutron activation analysis process in Malaysian nuclear agency AIP Conference Proceedings 1799, 050009 (2017) Abstract. Amang or tin tailing is processed into concentrated ores and other economical valuable minerals such as monazite, zircon, xenotime, ilmenite etc. Besides that, the tailings from these ores may have a significant potential source of radiation exposure to amang plants' workers. This study was conducted to determine the elemental concentration of uranium and thorium in mineral samples collected from five amang tailing factories. The concentration of uranium and thorium was carried out by using instrumental neutron activation analysis (INAA) relative technique. The concentration of uranium and thorium in ppm obtained in this study are as follows: raw (189−1064) and (622−4965); monazite (1076−1988) and (3467−33578); xenotime 4053 and 5540; zircon (309−3090) and (387−6339); ilmenite (104−583) and (88−1205); rutile (212−889) and (44−1119); pyrite (7−43) and (9−132); and waste (5−338) and (9−1218) respectively. The analysis results shows that the monazite, xenotime and zircon have high content of uranium and thorium, whereas ilmenite, rutile, pyrite and waste have lower concentration compare with raw materials after tailing process. The highest values of uranium and thorium concentrations (4053 ± 428 ppm and 33578 ± 873 ppm, respectively) were observed in xenotime and monazite; whereas the lowest value was 5.48 ± 0.86 ppm of uranium recorded in waste (sand) and 9 ± 0.32 ppm of thorium for waste (sand) and pyrite.

show abstract

Determination of rare earth elements concentration at different depth profile of Precambrian pegmatites using instrumental neutron activation analysis

Aliyu

Musa

Liman

et al. 2018

Applied Radiation and Isotopes

View full text Add to dashboard Cite

Investigate the capability of INAA absolute method to determine the concentrations of 238U and 232Th in rock samples

Cited by 4 publications

References 9 publications

Assessment of Uranium and Thorium Co-contaminant Exposure from Incidental Concrete Dust Ingestion

Assessment of Uranium and Thorium Co-contaminant Exposure from Incidental Concrete Dust Ingestion

Determination of the elemental concentration of uranium and thorium in the products and by-products of amang tin tailings process

Determination of rare earth elements concentration at different depth profile of Precambrian pegmatites using instrumental neutron activation analysis

Contact Info

Product

Resources

About