<?xml version="1.0" encoding="utf-8"?><metadata xmlns:dc="http://purl.org/dc/elements/1.1/"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dcterms="http://purl.org/dc/terms/"><dc:title xml:lang="en">chelating agent</dc:title><dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31306023</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="en">Getty Institute</dc:publisher><dcterms:created>2026-03-30 20:22:20</dcterms:created><dcterms:isPartOf xsi:type="dcterms:URI">http://AATesaurus.cultura.gencat.cat/aat/getty_en</dcterms:isPartOf><dcterms:isPartOf xml:lang="en">Tesaurus d&apos;Art i Arquitectura</dcterms:isPartOf><dc:format>text/html</dc:format> <dcterms:alternative xml:lang="en">agent, chelating</dcterms:alternative> <dcterms:alternative xml:lang="en">chelants</dcterms:alternative> <dcterms:alternative xml:lang="en">sequestering agent</dcterms:alternative> <dcterms:alternative xml:lang="en">sequestrant</dcterms:alternative> <dc:description xml:lang="en"><![CDATA[ Organic chemical compounds capable of forming coordinate bonds with metals. Chelating agents are used to sequester or remove residual trace metal ions from materials to which they have attached. In a conservation context, uses of chelants include stabilizing of paper containing iron-gall ink, removal of iron residue from platinum prints; treatment of excavated copper objects.  ]]></dc:description></metadata>