<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31341394</termId><termName>pyrolysis gas chromatography</termName><termType>PT</termType><termNote><![CDATA[ Gas chromatography initiated by pyrolysis of the solid state. The molecular breakdown effected by high temperature may result in molecules that are more stable than those separated through standard vaporisation.   ]]></termNote><termCreatedDate>2026-03-30 20:32:04</termCreatedDate><relation><relationType>UF</relationType><termId>31341395</termId><termName>PyGC</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31341396</termId><termName>Pyr-GC</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31341397</termId><termName>gas chromatography, pyrolysis</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31317382</termId><termName>gas chromatography</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31372166</termId><termName>thermal hydrolysis and methylation</termName><termType>PT</termType></relation></term>  </Zthes>