{"id":4469,"date":"2026-03-12T15:07:23","date_gmt":"2026-03-12T07:07:23","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=4469"},"modified":"2026-03-12T15:07:23","modified_gmt":"2026-03-12T07:07:23","slug":"a500-zeeman-atomic-absorption-spectrophotometer-application-case-determination-of-lead-content-in-nutrient-salts-for-fermentation","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/de\/applications\/petrochemical-and-chemical\/a500-zeeman-atomic-absorption-spectrophotometer-application-case-determination-of-lead-content-in-nutrient-salts-for-fermentation\/","title":{"rendered":"A500 Zeeman Atomabsorptionsspektrophotometer Anwendungsfall\u2014Bestimmung des Bleigehalts in N\u00e4hrstoffsalzen zur G\u00e4rung"},"content":{"rendered":"<p>Als N\u00e4hrstoffquelle f\u00fcr das mikrobielle Wachstum (Stickstoffquelle, Phosphorquelle, Spurenelemente usw.) werden N\u00e4hrstoffsalze f\u00fcr die G\u00e4rung in der Lebensmittel-, Gesundheitsprodukt-, Futtermittel- und Biomedizinindustrie weit verbreitet.<\/p>\n<p>Blei ist ein hoch akkumulierendes giftiges Schwermetall, das nicht von Mikroorganismen abbaut werden kann. Ohne strenge Gehaltsbestimmung kann es sich leicht in Endprodukten \u00fcber die Lebensmittelkette ansammeln, was potenzielle Sicherheitsrisiken darstellt.<\/p>\n<p>Gem\u00e4\u00df *GB 5009.12-2023 National Food Safety Standard: Determination of Lead in Foods* wurde in dieser Studie das A500 Zeeman Atomabsorption Spectrophotometer verwendet. Durch seine ausgezeichnete Hintergrundkorrekturf\u00e4higkeit und hervorragende Stabilit\u00e4t wurde eine Methodenvalidierung zur Bestimmung des Bleigehalts in N\u00e4hrstoffsalzen f\u00fcr die G\u00e4rung durchgef\u00fchrt.<\/p>\n<p>1. Instrumente und Reagentien<\/p>\n<p>Instrumente: A500 Zeeman Graphitofen Atomabsorption Spektrophotometer<\/p>\n<p>Reagenzien: Stickstoffs\u00e4ure, Ammoniumdihydrogenphosphat, Palladiumnitrat<\/p>\n<p>Referenzmaterial: GSB 04-1742-2004 Blei Single Element Standardl\u00f6sung<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>As the core nutrient source for microbial growth (nitrogen source, phosphorus source, trace elements, etc.), nutrient salts for fermentation are widely used in food, health products, feed and biomedicine industries. Lead is a highly accumulative toxic heavy metal that cannot be degraded by microorganisms. Without strict content determination, it can easily accumulate in end products [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[81],"tags":[],"class_list":["post-4469","post","type-post","status-publish","format-standard","hentry","category-petrochemical-and-chemical"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/de\/wp-json\/wp\/v2\/posts\/4469","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pgeneral.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pgeneral.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/de\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/de\/wp-json\/wp\/v2\/comments?post=4469"}],"version-history":[{"count":1,"href":"https:\/\/www.pgeneral.com\/de\/wp-json\/wp\/v2\/posts\/4469\/revisions"}],"predecessor-version":[{"id":4471,"href":"https:\/\/www.pgeneral.com\/de\/wp-json\/wp\/v2\/posts\/4469\/revisions\/4471"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/de\/wp-json\/wp\/v2\/media?parent=4469"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/de\/wp-json\/wp\/v2\/categories?post=4469"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/de\/wp-json\/wp\/v2\/tags?post=4469"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}