“…The isotopes of ruthenium ( 97 Ru, 103 Ru and lls Ru) produced by irradiation of elementary ruthenium /359/ were used as internal standards for the determination of thorium and other elements in a basaltic rock. Arsenic has also been used for determination of thorium in monazites /361/.…”
Section: Standards For Neutron Activation Analysismentioning
“…The isotopes of ruthenium ( 97 Ru, 103 Ru and lls Ru) produced by irradiation of elementary ruthenium /359/ were used as internal standards for the determination of thorium and other elements in a basaltic rock. Arsenic has also been used for determination of thorium in monazites /361/.…”
Section: Standards For Neutron Activation Analysismentioning
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