J. Liendo, A. C. González, A. Rojas, N. Fletcher, D. Caussyn, P. Barber
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Investigation of lithium forward scattering for the analysis of carbon and oxygen in human amniotic fluid
Lithium forward elastic scattering is investigated as an additional method for Z<11 multielemental analysis in human amniotic fluid (AF). Concentrations of C and O are obtained from the analysis of an AF sample that is diluted with distilled water, deposited on a formvar backing and dried naturally. Solid residues of this diluted sample are bombarded with 13 MeV 6,7Li beams and the elastically scattered beam is detected at 16.45o, 20.45o and 28.0o simultaneously. The quality of elastic spectra improves with sample dilution. The content of C and O in the backing is subtracted. Carbon and oxygen concentrations of the non-diluted AF sample are determined by assuming that elemental concentration varies linearly with dilution.
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