{"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\/id\/applications\/petrochemical-and-chemical\/a500-zeeman-atomic-absorption-spectrophotometer-application-case-determination-of-lead-content-in-nutrient-salts-for-fermentation\/","title":{"rendered":"Kasus Aplikasi Spektrofotometer Penyerapan Atom A500 Zeeman - Penentuan Kandungan Timbal dalam Garam Gizi untuk Fermentasi"},"content":{"rendered":"<p>Sebagai sumber nutrisi inti untuk pertumbuhan mikroba (sumber nitrogen, sumber fosfor, unsur jejak, dll.), garam nutrisi untuk fermentasi banyak digunakan dalam industri makanan, produk kesehatan, pakan dan biomedis.<\/p>\n<p>Timbal adalah logam berat beracun yang sangat akumulatif yang tidak dapat terdegradasi oleh mikroorganisme. Tanpa penentuan konten yang ketat, dapat dengan mudah terakumulasi dalam produk akhir melalui rantai makanan, menimbulkan risiko keselamatan potensial.<\/p>\n<p>Sesuai dengan *GB 5009.12-2023 National Food Safety Standard: Determination of Lead in Foods*, Spektrofotometer Penyerapan Atom A500 Zeeman diadopsi dalam studi ini. Karena kemampuan koreksi latar belakangnya yang sangat baik dan stabilitas yang luar biasa, validasi metode untuk penentuan kandungan timah dalam garam nutrisi untuk fermentasi dilakukan.<\/p>\n<p>1. Instrumen dan Reagen<\/p>\n<p>Instrumen: Spektrofotometer Penyerapan Atom Tunku Grafit A500 Zeeman<\/p>\n<p>Reagen: Asam nitrat, Amonium dihidrogen fosfat, Palladium nitrat<\/p>\n<p>Bahan referensi: GSB 04-1742-2004 Solusi Standar Unsur Tunggal Timbal<\/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\/id\/wp-json\/wp\/v2\/posts\/4469","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/comments?post=4469"}],"version-history":[{"count":1,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/posts\/4469\/revisions"}],"predecessor-version":[{"id":4471,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/posts\/4469\/revisions\/4471"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/media?parent=4469"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/categories?post=4469"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/tags?post=4469"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}