Analysis of Iodine-129 in aqueous samples by inductively coupled plasma-mass spectrometry

Beals, D.M.; Chastagner, P.; Turner, Philip C.

doi:10.2172/10109561

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“…The initial procedure development to analyze 1291 by ICP-MS used a Meinhart nebulizer and Scott's spray chamber for sample introduction. We were not able to eliminate the xenon intederence at m/z=129, (26.4% abundant peak of natural xenon) in aqueous samples, ( Figure 3A) thus we had to develop a concentration procedure to achieve our desired d e wtion limit of less than 37 mBqL, (1 pCi/L) [2]. With the substitution of a CETAC ultrasonic nebulizer for sample introduction the Xe interference was no longer apparent, ( Figure 3B).…”

Section: Iodine-129mentioning

confidence: 99%

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Technetium-99, iodine-129 and tritium in the waters of the Savannah River Site

Beals

Hayes

1995

Science of The Total Environment

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Surface water samples were collected from streams on and around the Savannah River Site (SRS) to assess current 3H, 99Tc, and 129I concentrations in the water. The SRS is a nuclear facility operated by Westinghouse Savannah River Company for the US Department of Energy. Water quality parameters were measured at the time of collection using field portable instrumentation. The tritium activity was determined by liquid scintillation spectrometry. The isotopes, 99Tc and 129I, were determined by isotope dilution/inductively coupled plasma-mass spectrometry (D.M. Beals, Determination of technetium-99 in aqueous samples by isotope dilution inductively coupled plasma-mass spectrometry. Presented at the 3rd International Conference on Nuclear and Radiochemistry, Vienna, September 1992, unpublished data; D.M. Beals, P. Chastagner and P.K. Turner, Analysis of iodine-129 in aqueous samples by inductively coupled plasma-mass spectrometry. Presented at the 38th Annual Conference on Bioassay, Analytical and Environmental Radiochemistry, Santa Fe, NM, November 1992). Elevated activities of 3H, 99Tc, and 129I were found in some surface streams of the SRS, principally due to migration of ground water from beneath old seepage basins, however the levels in the waters leaving the SRS are well below any regulatory guidelines.

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Section: Iodine-129mentioning

confidence: 99%

“…Four scans are performed during each sample analysis. For samples with high natural iodine concentrations both the Faraday detector and the multiplier detector of the SOLA are used, [2]. The lWI count rate is measured on the Faraday detector and the 1291 on the multiplier, with indium used as a normalizing factor to determine the 129/127 ratio.…”

Section: -mentioning

confidence: 99%