http://www.vocabularyserver.com/gemet/pt/http://www.vocabularyserver.com/gemet/pt/xml.php?skosTema=486halogéneos orgânicos http://www.vocabularyserver.com/gemet/pt/xml.php?skosTema=486 qualidade da água RT http://www.vocabularyserver.com/gemet/pt/xml.php?skosTema=486 parâmetros BT