{"id":4885,"date":"2026-08-13T14:03:10","date_gmt":"2026-08-13T06:03:10","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=4885"},"modified":"2026-08-13T14:03:10","modified_gmt":"2026-08-13T06:03:10","slug":"determination-of-total-selenium-in-sugar-tangerine-hydride-generation-atomic-fluorescence-spectrometry","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/vi\/applications\/determination-of-total-selenium-in-sugar-tangerine-hydride-generation-atomic-fluorescence-spectrometry","title":{"rendered":"# X\u00e1c \u0111\u1ecbnh t\u1ed5ng h\u00e0m l\u01b0\u1ee3ng Selen trong \u0111\u01b0\u1eddng qu\u00fdt (Ph\u01b0\u01a1ng ph\u00e1p \u0111o quang ph\u1ed5 hu\u1ef3nh quang nguy\u00ean t\u1eed t\u1ea1o hydrua)"},"content":{"rendered":"<h2>1 T\u1ed5ng quan ph\u01b0\u01a1ng ph\u00e1p<\/h2>\n<p>M\u1eabu \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng axit d\u01b0\u1edbi t\u00e1c d\u1ee5ng nhi\u1ec7t. Trong m\u00f4i tr\u01b0\u1eddng axit clohydric 6 mol\/L, selen h\u00f3a tr\u1ecb s\u00e1u trong m\u1eabu \u0111\u01b0\u1ee3c kh\u1eed th\u00e0nh selen h\u00f3a tr\u1ecb b\u1ed1n. Kali borohydride \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m ch\u1ea5t kh\u1eed \u0111\u1ec3 chuy\u1ec3n selen h\u00f3a tr\u1ecb b\u1ed1n th\u00e0nh hydro selenua trong m\u00f4i tr\u01b0\u1eddng axit clohydric. Hydro selenua t\u1ea1o th\u00e0nh \u0111\u01b0\u1ee3c kh\u00ed mang (argon) \u0111\u01b0a v\u00e0o b\u1ed9 nguy\u00ean t\u1eed h\u00f3a \u0111\u1ec3 nguy\u00ean t\u1eed h\u00f3a. Khi \u0111\u01b0\u1ee3c chi\u1ebfu x\u1ea1 b\u1eb1ng \u0111\u00e8n cat\u1ed1t r\u1ed7ng selen, c\u00e1c nguy\u00ean t\u1eed selen \u1edf tr\u1ea1ng th\u00e1i c\u01a1 b\u1ea3n \u0111\u01b0\u1ee3c k\u00edch th\u00edch l\u00ean tr\u1ea1ng th\u00e1i n\u0103ng l\u01b0\u1ee3ng cao. Hu\u1ef3nh quang c\u00f3 b\u01b0\u1edbc s\u00f3ng \u0111\u1eb7c tr\u01b0ng \u0111\u01b0\u1ee3c ph\u00e1t ra khi c\u00e1c nguy\u00ean t\u1eed tr\u1edf l\u1ea1i tr\u1ea1ng th\u00e1i c\u01a1 b\u1ea3n. C\u01b0\u1eddng \u0111\u1ed9 hu\u1ef3nh quang t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi h\u00e0m l\u01b0\u1ee3ng selen, v\u00e0 \u0111\u1ecbnh l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch so s\u00e1nh v\u1edbi c\u00e1c dung d\u1ecbch chu\u1ea9n.<\/p>\n<h2>2. Ph\u1ea1m vi \u00e1p d\u1ee5ng<\/h2>\n<p>Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh h\u00e0m l\u01b0\u1ee3ng selen trong qu\u00fdt \u0111\u01b0\u1eddng.<\/p>\n<h2>3 Ti\u00eau chu\u1ea9n tham chi\u1ebfu<\/h2>\n<p>Ti\u00eau chu\u1ea9n an to\u00e0n th\u1ef1c ph\u1ea9m qu\u1ed1c gia GB 5009.93-2017 \u2013 X\u00e1c \u0111\u1ecbnh h\u00e0m l\u01b0\u1ee3ng Selen trong th\u1ef1c ph\u1ea9m, Ph\u01b0\u01a1ng ph\u00e1p 1: Quang ph\u1ed5 hu\u1ef3nh quang nguy\u00ean t\u1eed t\u1ea1o hydrua<\/p>\n<h2>4. D\u1ee5ng c\u1ee5, thi\u1ebft b\u1ecb v\u00e0 h\u00f3a ch\u1ea5t<\/h2>\n<h3>4.1 D\u1ee5ng c\u1ee5 v\u00e0 thi\u1ebft b\u1ecb<\/h3>\n<h4>4.1.1 D\u1ee5ng c\u1ee5 ph\u00e2n t\u00edch<\/h4>\n<p>t\u1edd gi\u1ea5y<\/p>\n<table>\n<thead>\n<tr>\n<th>Kh\u00f4ng.<\/th>\n<th>T\u00ean<\/th>\n<th>S\u1ed1 l\u01b0\u1ee3ng<\/th>\n<th>Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt<\/th>\n<th>Ph\u1ee5 ki\u1ec7n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1<\/td>\n<td>M\u00e1y quang ph\u1ed5 hu\u1ef3nh quang nguy\u00ean t\u1eed<\/td>\n<td>1 b\u1ed9<\/td>\n<td>\u2014<\/td>\n<td>\u0110\u00e8n cathode r\u1ed7ng selenium<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>B\u00ecnh kh\u00ed Argon<\/td>\n<td>1 xi lanh<\/td>\n<td>\u0110\u1ed9 tinh khi\u1ebft \u226599,999%<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"<p>1 Method Overview The sample is digested with acid under heating. In a 6 mol\/L hydrochloric acid medium, hexavalent selenium in the sample is reduced to tetravalent selenium. Potassium borohydride is used as reducing agent to convert tetravalent selenium into hydrogen selenide in hydrochloric acid medium. The generated hydrogen selenide is carried by carrier gas [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":4886,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[36,73],"tags":[],"class_list":["post-4885","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-applications","category-food-and-drugs"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts\/4885","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=4885"}],"version-history":[{"count":1,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts\/4885\/revisions"}],"predecessor-version":[{"id":4887,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts\/4885\/revisions\/4887"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/media\/4886"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/media?parent=4885"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/categories?post=4885"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/tags?post=4885"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}