{"id":4483,"date":"2026-03-16T10:36:00","date_gmt":"2026-03-16T02:36:00","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=4483"},"modified":"2026-03-16T10:36:00","modified_gmt":"2026-03-16T02:36:00","slug":"determination-of-vitamin-b%e2%82%82ultraviolet-visible-spectrophotometry-2","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/ar\/applications\/bio-tech-and-life-sciences\/determination-of-vitamin-b%e2%82%82ultraviolet-visible-spectrophotometry-2","title":{"rendered":"\u062a\u062d\u062f\u064a\u062f \u0641\u064a\u062a\u0627\u0645\u064a\u0646 \u0628 \u2082  (\u0627\u0644\u0623\u0634\u0639\u0629 \u0641\u0648\u0642 \u0627\u0644\u0628\u0646\u0641\u0633\u062c\u064a\u0629 \u0627\u0644\u0645\u0631\u0626\u064a\u0629 \u0627\u0644\u0637\u064a\u0641\u064a\u0629)"},"content":{"rendered":"<ol>\n<li>\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0637\u0631\u064a\u0642\u0629<\/li>\n<\/ol>\n<p>\u062a\u0633\u062a\u0646\u062f \u0647\u0630\u0647 \u0627\u0644\u0637\u0631\u064a\u0642\u0629 \u0625\u0644\u0649 GB 12752-2010 \u0627\u0644\u0645\u0639\u064a\u0627\u0631 \u0627\u0644\u0648\u0637\u0646\u064a \u0644\u0633\u0644\u0627\u0645\u0629 \u0627\u0644\u0623\u063a\u0630\u064a\u0629 &amp;#8211 \u061b \u0627\u0644\u0645\u0636\u0627\u0641\u0627\u062a \u0627\u0644\u063a\u0630\u0627\u0626\u064a\u0629 \u0641\u064a\u062a\u0627\u0645\u064a\u0646 \u0628 \u2082  (\u0631\u064a\u0628\u0648\u0641\u0644\u0627\u0641\u064a\u0646). \u0628\u0639\u062f \u0630\u0648\u0628\u0627\u0646 \u0641\u064a\u062a\u0627\u0645\u064a\u0646 \u0628 \u2082, \u064a\u062a\u0645 \u062a\u062e\u0641\u064a\u0641\u0647 \u0628\u0645\u062d\u0644\u0648\u0644 \u0627\u0633\u062a\u064a\u062a \u0627\u0644\u0635\u0648\u062f\u064a\u0648\u0645 \u060c \u0648\u064a\u0633\u062a\u062e\u062f\u0645 \u0643\u0648\u0641\u064a\u062a \u0643\u0648\u0627\u0631\u062a\u0632 1 \u0633\u0645 \u0644\u0644\u0645\u0633\u062d \u0627\u0644\u0637\u064a\u0641\u064a \u0644\u062a\u062d\u062f\u064a\u062f \u0623\u0642\u0635\u0649 \u0630\u0631\u0648\u0629 \u0627\u0645\u062a\u0635\u0627\u0635. \u064a\u062c\u0628 \u0623\u0646 \u062a\u0643\u0648\u0646 \u0646\u0633\u0628\u0629 \u0627\u0644\u0627\u0645\u062a\u0635\u0627\u0635 \u0639\u0646\u062f 375nm \u0625\u0644\u0649 267nm 0.31 ~ 0.33 \u060c \u0648\u0646\u0633\u0628\u0629 \u0627\u0644\u0627\u0645\u062a\u0635\u0627\u0635 \u0639\u0646\u062f 222nm \u0625\u0644\u0649 267nm \u064a\u062c\u0628 \u0623\u0646 \u062a\u0643\u0648\u0646 0.36 ~ 0.39.<\/p>\n<ol start=\"2\">\n<li>\u0627\u0644\u0646\u0637\u0627\u0642<\/li>\n<\/ol>\n<p>\u0641\u064a\u062a\u0627\u0645\u064a\u0646 B2<\/p>\n<ol start=\"3\">\n<li>\u0627\u0644\u0645\u0631\u0627\u062c\u0639<\/li>\n<\/ol>\n<p>GB 14752-2010 * \u0645\u0639\u064a\u0627\u0631 \u0633\u0644\u0627\u0645\u0629 \u0627\u0644\u0623\u063a\u0630\u064a\u0629 \u0627\u0644\u0648\u0637\u0646\u064a &amp;#8211 \u061b \u0627\u0644\u0645\u0636\u0627\u0641\u0629 \u0627\u0644\u063a\u0630\u0627\u0626\u064a\u0629 \u0641\u064a\u062a\u0627\u0645\u064a\u0646 B2 (\u0631\u064a\u0628\u0648\u0641\u0644\u0627\u0641\u064a\u0646) *<\/p>\n<p>4. \u0623\u062f\u0648\u0627\u062a \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631<\/p>\n<p>TU1901 \u0627\u0644\u0623\u0634\u0639\u0629 \u0641\u0648\u0642 \u0627\u0644\u0628\u0646\u0641\u0633\u062c\u064a\u0629 \u0627\u0644\u0637\u064a\u0641\u064a\u0629 \u0627\u0644\u0636\u0648\u0626\u064a\u0629 (240nm ~ 465nm)<\/p>\n<p>1 \u0633\u0645 \u0643\u0648\u0627\u0631\u062a\u0632 \u0643\u0648\u0641\u064a\u062a<\/p>","protected":false},"excerpt":{"rendered":"<p>Method Overview This method is based on GB 12752-2010 National Food Safety Standard &#8211; Food Additive Vitamin B\u2082(Riboflavin). After dissolving vitamin B\u2082, it is diluted with sodium acetate solution, and a 1cm quartz cuvette is used for spectral scanning to determine the maximum absorption peak. The absorbance ratio at 375nm to that at 267nm should [&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":[77],"tags":[],"class_list":["post-4483","post","type-post","status-publish","format-standard","hentry","category-bio-tech-and-life-sciences"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/ar\/wp-json\/wp\/v2\/posts\/4483","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pgeneral.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pgeneral.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/ar\/wp-json\/wp\/v2\/comments?post=4483"}],"version-history":[{"count":0,"href":"https:\/\/www.pgeneral.com\/ar\/wp-json\/wp\/v2\/posts\/4483\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/ar\/wp-json\/wp\/v2\/media?parent=4483"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/ar\/wp-json\/wp\/v2\/categories?post=4483"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/ar\/wp-json\/wp\/v2\/tags?post=4483"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}