En tant que source nutritive de base pour la croissance microbienne (source d'azote, source de phosphore, oligo-\u00e9l\u00e9ments, etc.), les sels nutritifs pour la fermentation sont largement utilis\u00e9s dans les industries alimentaire, de produits de sant\u00e9, d'aliments pour animaux et de biom\u00e9dicine.<\/p>\n
Le plomb est un m\u00e9tal lourd toxique hautement accumulatif qui ne peut pas \u00eatre d\u00e9grad\u00e9 par les micro-organismes. Sans d\u00e9termination stricte du contenu, il peut facilement s\u2019accumuler dans les produits finaux \u00e0 travers la cha\u00eene alimentaire, pr\u00e9sentant des risques potentiels pour la s\u00e9curit\u00e9.<\/p>\n
Conform\u00e9ment \u00e0 *GB 5009.12-2023 National Food Safety Standard: Determination of Lead in Foods*, le spectrophotom\u00e8tre d'absorption atomique A500 Zeeman a \u00e9t\u00e9 adopt\u00e9 dans cette \u00e9tude. Gr\u00e2ce \u00e0 son excellent pouvoir de correction de fond et \u00e0 sa stabilit\u00e9 exceptionnelle, une validation de la m\u00e9thode pour la d\u00e9termination de la teneur en plomb dans les sels nutritifs pour la fermentation a \u00e9t\u00e9 effectu\u00e9e.<\/p>\n
1. Instruments et r\u00e9actifs<\/p>\n
Instruments: Spectrophotom\u00e8tre d'absorption atomique pour four \u00e0 graphite Zeeman A500<\/p>\n
R\u00e9actifs: Acide nitrique, phosphate d'ammonium dihydrog\u00e8ne, nitrate de palladium<\/p>\n
Mat\u00e9riel de r\u00e9f\u00e9rence: GSB 04-1742-2004 Solution standard \u00e0 \u00e9l\u00e9ment unique au plomb<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
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 […]<\/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\/fr\/wp-json\/wp\/v2\/posts\/4469","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/comments?post=4469"}],"version-history":[{"count":1,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/posts\/4469\/revisions"}],"predecessor-version":[{"id":4471,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/posts\/4469\/revisions\/4471"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/media?parent=4469"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/categories?post=4469"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/fr\/wp-json\/wp\/v2\/tags?post=4469"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}