{"id":82849,"date":"2023-08-29T10:09:12","date_gmt":"2023-08-29T10:09:12","guid":{"rendered":"https:\/\/stopcarcinogensatwork.eu\/fact\/spojevi-kroma-vi\/"},"modified":"2025-09-04T12:59:24","modified_gmt":"2025-09-04T12:59:24","slug":"spojevi-kroma-vi","status":"publish","type":"fact","link":"https:\/\/stopcarcinogensatwork.eu\/hr\/fact\/spojevi-kroma-vi\/","title":{"rendered":"Spojevi kroma VI"},"content":{"rendered":"<blockquote><p>Procjenjuje se da je oko 900 000 radnika u EU potencijalno izlo\u017eeno kromu VI. Studije radnika u industriji proizvodnje kromata, kromatnog pigmenta i kromiranja zaposlenih prije 1980-ih pokazuju pove\u0107ane stope smrtnosti od raka plu\u0107a. <\/p><\/blockquote>\n<p>Spojevi kroma VI klasificirani su kao karcinogeni kategorije 1A, \u0161to zna\u010di da su dokazani uzrok raka kod ljudi. Izlo\u017eenost kromu VI doga\u0111a se udisanjem, gutanjem putem hrane ili vode ili izravnim kontaktom s ko\u017eom. Zbog jakih korozivnih svojstava, krom VI ima i akutne u\u010dinke na zdravlje. Osim toga, izlo\u017eenost kromu VI mo\u017ee uzrokovati senzibilizaciju ko\u017ee i di\u0161nih putova, poput astme, te mo\u017ee dovesti do specifi\u010dne toksi\u010dnosti za plu\u0107a, jetru i bubrege.   <\/p>\n<h2>Gdje se javljaju rizici<\/h2>\n<p>Izlo\u017eenost na radnom mjestu uglavnom se javlja kod zavarivanja i drugih vrsta \u201evru\u0107ih radova\u201c na nehr\u0111aju\u0107em \u010deliku i drugim metalima koji sadr\u017ee krom VI. Druge vrste poslova s potencijalnom izlo\u017eeno\u0161\u0107u su upotreba pigmenata, boja u spreju i premaza. Druga relevantna podru\u010dja rada su primjena povr\u0161inske obrade plastike i metala, npr. rad s kadama za kromiranje. Izlo\u017eenost se tako\u0111er javlja abrazivnim tehnikama materijala oblo\u017eenih kromom VI, poput abrazivnog pjeskarenja, bru\u0161enja i bru\u0161enja. Industrije u kojima dolazi do izlo\u017eenosti su sektor funkcionalnog prevla\u010denja, \u010delik, brodogradili\u0161ta, gra\u0111evinarstvo, industrija betona i radionice za popravak i lakiranje karoserija automobila, kamiona, vlakova i zrakoplova.    <\/p>\n<h2>Vi\u0161e o supstanci<\/h2>\n<p>Krom VI je oblik metalnog elementa kroma. U prirodi je \u010desto prisutan s drugim elementima, poput metala, u rudama i potrebno ga je industrijski obra\u0111ivati. Najrelevantniji industrijski spojevi sadr\u017ee natrij, kalij, cink, stroncij, olovo ili amonij. Kromov trioksid ili kromova kiselina uobi\u010dajene su industrijski kori\u0161tene tvari kroma VI. Metalni krom se namjerno dodaje legiranom \u010deliku ili se koristi u povr\u0161inskim obradama za pove\u0107anje tehni\u010dkih svojstava, poput prokaljivosti, otpornosti na toplinu i koroziju. Spojevi kroma VI mogu se koristiti kao pigmenti u bojama, bojama, tintama i plastici. Tako\u0111er se mo\u017ee koristiti kao antikorozivno sredstvo koje se dodaje bojama, temeljnim premazima i drugim povr\u0161inskim premazima. Za razliku od kroma VI, drugi relevantan, ali ne i kancerogeni oblik je krom III, koji se mo\u017ee transformirati u krom VI pod oksidativnim uvjetima.       <\/p>\n<h2>Opasnosti koje se mogu pojaviti<\/h2>\n<p>Udisanje visokih razina kroma VI mo\u017ee uzrokovati simptome poput curenja iz nosa, kihanja, ka\u0161ljanja, svrbe\u017ea i peckanja. Ponavljana ili dugotrajna izlo\u017eenost mo\u017ee uzrokovati ranice u nosu i rezultirati krvarenjem iz nosa i o\u0161te\u0107enjem nosne pregrade. Kontakt s ko\u017eom uzrokuje ozbiljnu iritaciju, a oralni unos mo\u017ee uzrokovati akutno trovanje (gastrointestinalne simptome). Neki zaposlenici postaju alergi\u010dni na krom VI. Udisanje kromatnih spojeva tada mo\u017ee uzrokovati simptome astme. Kroni\u010dna izlo\u017eenost ko\u017ee kromu VI mo\u017ee dovesti do slabo zacjeljuju\u0107ih \u010direva koji se pojavljuju nakon ozljeda ko\u017ee; oralni unos mo\u017ee uzrokovati sistemske u\u010dinke na bubrege i jetru. Dugotrajna izlo\u017eenost kromu VI u zraku mo\u017ee uzrokovati rak plu\u0107a, nosa i sinusa.      <\/p>\n<p><strong>Latentno razdoblje izme\u0111u karcinoma povezanih s kromom VI je do 20 godina nakon izlaganja kromu VI.<\/strong><\/p>\n<h2>\u0160to mo\u017eete u\u010diniti<\/h2>\n<p>Naju\u010dinkovitiji na\u010din sprje\u010davanja izlo\u017eenosti je zamjena proizvodima bez kroma VI ili s ni\u017eim udjelom kroma VI. Za specifi\u010dne upotrebe i ako je primjenjivo, tehni\u010dke alternative mogu biti iscrpljene (npr. fizi\u010dko talo\u017eenje iz pare, prevla\u010denje kromom III, upotreba teku\u0107ih oblika kromovih spojeva itd.). Ako se proizvodi koji sadr\u017ee krom VI ne mogu zamijeniti, izlo\u017eenost tvari treba smanjiti in\u017eenjerskim kontrolama. Na primjer, koristite usisni plamenik za zavarivanje i odgovaraju\u0107e lokalne i radioni\u010dke ventilacijske sustave. Kontinuirano provodite ispravna mjerenja izlo\u017eenosti kako biste znali kada treba poduzeti mjere. Istra\u017eite prijavljuju li radnici rane simptome. Kontinuirano osvje\u0161tavajte radnike o u\u010dincima izlo\u017eenosti. Osim toga, obu\u010dite radnike o opasnostima, sigurnim radnim praksama i u\u010dinkovitim higijenskim mjerama.       <\/p>\n<p>Osigurajte da radnici imaju odgovaraju\u0107u osobnu za\u0161titnu opremu, kao \u0161to su odgovaraju\u0107a za\u0161tita za disanje, za\u0161titna odje\u0107a i rukavice. U nekim slu\u010dajevima mo\u017ee biti potreban respirator. Osobnu za\u0161titnu opremu treba koristiti samo kao krajnju mjeru, nakon \u0161to su predstavljena mogu\u0107a tehni\u010dka rje\u0161enja. Iako se izlo\u017eenost kromu VI uglavnom odvija udisanjem, treba izbjegavati i kontakt s ko\u017eom.   <\/p>\n","protected":false},"template":"","carcinogens":[4670],"class_list":["post-82849","fact","type-fact","status-publish","hentry","carcinogens-spojevi-kroma-vi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.0 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Spojevi kroma VI - STOP carcinogens at work<\/title>\n<meta name=\"description\" content=\"Procjenjuje se da je oko 900 000 radnika u EU potencijalno izlo\u017eeno kromu VI. 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