{"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\/vi\/applications\/petrochemical-and-chemical\/a500-zeeman-atomic-absorption-spectrophotometer-application-case-determination-of-lead-content-in-nutrient-salts-for-fermentation\/","title":{"rendered":"Tr\u01b0\u1eddng h\u1ee3p \u1ee9ng d\u1ee5ng quang ph\u1ed5 h\u1ea5p th\u1ee5 nguy\u00ean t\u1eed A500 Zeeman - X\u00e1c \u0111\u1ecbnh h\u00e0m l\u01b0\u1ee3ng ch\u00ec trong mu\u1ed1i dinh d\u01b0\u1ee1ng \u0111\u1ec3 l\u00ean men"},"content":{"rendered":"<p>L\u00e0 ngu\u1ed3n dinh d\u01b0\u1ee1ng c\u1ed1t l\u00f5i cho s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a vi khu\u1ea9n (ngu\u1ed3n nit\u01a1, ngu\u1ed3n ph\u1ed1t pho, nguy\u00ean t\u1ed1 vi l\u01b0\u1ee3ng, v.v.), mu\u1ed1i dinh d\u01b0\u1ee1ng cho l\u00ean men \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p th\u1ef1c ph\u1ea9m, s\u1ea3n ph\u1ea9m s\u1ee9c kh\u1ecfe, th\u1ee9c \u0103n v\u00e0 y sinh h\u1ecdc.<\/p>\n<p>Ch\u00ec l\u00e0 m\u1ed9t kim lo\u1ea1i n\u1eb7ng \u0111\u1ed9c h\u1ea1i t\u00edch l\u0169y cao kh\u00f4ng th\u1ec3 b\u1ecb vi sinh v\u1eadt ph\u00e2n h\u1ee7y. N\u1ebfu kh\u00f4ng x\u00e1c \u0111\u1ecbnh n\u1ed9i dung nghi\u00eam ng\u1eb7t, n\u00f3 c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng t\u00edch l\u0169y trong c\u00e1c s\u1ea3n ph\u1ea9m cu\u1ed1i c\u00f9ng th\u00f4ng qua chu\u1ed7i th\u1ef1c ph\u1ea9m, g\u00e2y ra c\u00e1c r\u1ee7i ro an to\u00e0n ti\u1ec1m n\u0103ng.<\/p>\n<p>Theo ti\u00eau chu\u1ea9n an to\u00e0n th\u1ef1c ph\u1ea9m qu\u1ed1c gia GB 5009.12-2023: X\u00e1c \u0111\u1ecbnh ch\u00ec trong th\u1ef1c ph\u1ea9m, m\u00e1y quang ph\u1ed5 h\u1ea5p th\u1ee5 nguy\u00ean t\u1eed A500 Zeeman \u0111\u00e3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng trong nghi\u00ean c\u1ee9u n\u00e0y. Do kh\u1ea3 n\u0103ng ch\u1ec9nh s\u1eeda n\u1ec1n tuy\u1ec7t v\u1eddi v\u00e0 s\u1ef1 \u1ed5n \u0111\u1ecbnh xu\u1ea5t s\u1eafc c\u1ee7a n\u00f3, x\u00e1c nh\u1eadn ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh h\u00e0m l\u01b0\u1ee3ng ch\u00ec trong mu\u1ed1i dinh d\u01b0\u1ee1ng \u0111\u1ec3 l\u00ean men \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n.<\/p>\n<p>1. D\u1ee5ng c\u1ee5 v\u00e0 thu\u1ed1c th\u1eed<\/p>\n<p>D\u1ee5ng c\u1ee5: A500 Zeeman Graphite l\u00f2 h\u1ea5p th\u1ee5 nguy\u00ean t\u1eed quang ph\u1ed5<\/p>\n<p>Thu\u1ed1c ph\u1ea3n \u1ee9ng: Axit nitric, Ammonium dihydrogen phosphate, Palladium nitrate<\/p>\n<p>V\u1eadt li\u1ec7u tham kh\u1ea3o: GSB 04-1742-2004 Gi\u1ea3i ph\u00e1p ti\u00eau chu\u1ea9n nguy\u00ean t\u1ed1 \u0111\u01a1n ch\u00ec<\/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\/vi\/wp-json\/wp\/v2\/posts\/4469","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/comments?post=4469"}],"version-history":[{"count":1,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts\/4469\/revisions"}],"predecessor-version":[{"id":4471,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts\/4469\/revisions\/4471"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/media?parent=4469"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/categories?post=4469"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/tags?post=4469"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}