<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">mass spectrometry</topic></authority><related type="narrower"><topic>accelerated mass spectrometry</topic></related><related type="narrower"><topic>gas chromatography-mass spectrometry</topic></related><related type="narrower"><topic>thermal ionization mass spectrometry</topic></related><related type="narrower"><topic>evolved gas analysis</topic></related><related type="narrower"><topic>pyrolysis mass spectrometry</topic></related><related type="narrower"><topic>secondary ion mass spectrometry</topic></related><related type="narrower"><topic>time-of-flight mass spectrometry</topic></related><related type="narrower"><topic>ion scattering spectroscopy</topic></related><related type="narrower"><topic>secondary neutral mass spectrometry</topic></related><related type="other"><topic>atmospheric pressure chemical ionization</topic></related><related type="other"><topic>electrospray ionization</topic></related><related type="broader"><topic>analysis and testing techniques</topic></related><variant type="other"><topic>MS</topic></variant><variant type="other"><topic>analysis, mass spectrum</topic></variant><variant type="other"><topic>mass spectroscopy</topic></variant><variant type="other"><topic>mass spectrum analysis</topic></variant><variant type="other"><topic>spectrometry, mass</topic></variant><variant type="other"><topic>spectroscopy, mass</topic></variant> <note xml:lang="en"><![CDATA[ Analytic technique by which chemical substances are identified by the sorting of gaseous ions in electric and magnetic fields according to their mass-to-charge ratio. ]]></note></mads>