SEARCH Articles Figures Tables Dilute analysis, isotopes Dilution analysis Isotope analysis Isotope dilution Isotope dilution spectrometry Isotope spectrometry Isotope-dilution mass spectrometry Isotopes masses Isotopic analyses Isotopic dilution Isotopic dilution analysis Isotopic mass spectrometry Isotopic masses Mass isotope dilution Mass spectrometry analysis Mass spectrometry isotopes Speciated isotope dilution mass spectrometry Speciation analysis