The determination of oxygen-18 to oxygen-16 ratios in inorganic phosphates by gas-liquid chromatographic - mass spectrometric examination of the tri-n-butyl derivative.
D000818:Animals; D002417:Cattle; D055598:Chemical Phenomena; D002621:Chemistry; D002849:Chromatography, Gas; D002853:Chromatography, Liquid; D005243:Feces / Q000032:analysis; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D013058:Mass Spectrometry; D008892:Milk / Q000032:analysis; D010100:Oxygen / Q000032:analysis*; D010103:Oxygen Isotopes / Q000032:analysis*; D010710:Phosphates / Q000032:analysis*
D010103:Oxygen Isotopes; D010710:Phosphates; D010100:Oxygen