{"id":4891,"date":"2026-08-13T14:21:09","date_gmt":"2026-08-13T06:21:09","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=4891"},"modified":"2026-08-13T14:21:09","modified_gmt":"2026-08-13T06:21:09","slug":"%e3%80%8adetermination-of-chromium-in-surface-coatings-of-wheel-hubs-flame-atomic-absorption-spectrometry%e3%80%8bcontent-summary","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/vi\/applications\/%e3%80%8adetermination-of-chromium-in-surface-coatings-of-wheel-hubs-flame-atomic-absorption-spectrometry%e3%80%8bcontent-summary","title":{"rendered":"T\u00f3m t\u1eaft n\u1ed9i dung b\u00e0i vi\u1ebft \"X\u00e1c \u0111\u1ecbnh h\u00e0m l\u01b0\u1ee3ng Crom trong l\u1edbp ph\u1ee7 b\u1ec1 m\u1eb7t c\u1ee7a moay \u1ed1c b\u00e1nh xe (Ph\u01b0\u01a1ng ph\u00e1p quang ph\u1ed5 h\u1ea5p th\u1ee5 nguy\u00ean t\u1eed ng\u1ecdn l\u1eeda)\"."},"content":{"rendered":"<h1>1 T\u1ed5ng quan ph\u01b0\u01a1ng ph\u00e1p<\/h1>\n<p>Tr\u1ee5c b\u00e1nh xe \u0111\u01b0\u1ee3c l\u00e0m s\u1ea1ch k\u1ef9 l\u01b0\u1ee1ng b\u1eb1ng n\u01b0\u1edbc si\u00eau tinh khi\u1ebft v\u00e0 s\u1ea5y kh\u00f4 b\u1eb1ng kh\u00f4ng kh\u00ed. D\u1ee5ng c\u1ee5 c\u1ea1o \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 lo\u1ea1i b\u1ecf l\u1edbp s\u01a1n ph\u1ee7 ngo\u00e0i c\u00f9ng, l\u1edbp s\u01a1n trung gian v\u00e0 l\u1edbp s\u01a1n l\u00f3t tr\u00ean b\u1ec1 m\u1eb7t. Sau khi ph\u00e2n h\u1ee7y b\u1eb1ng vi s\u00f3ng, n\u1ed3ng \u0111\u1ed9 crom \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p quang ph\u1ed5 h\u1ea5p th\u1ee5 nguy\u00ean t\u1eed ng\u1ecdn l\u1eeda \u1edf b\u01b0\u1edbc s\u00f3ng 357,9 nm.<\/p>\n<h1>2. Ph\u1ea1m vi \u00e1p d\u1ee5ng<\/h1>\n<p>X\u00e1c \u0111\u1ecbnh h\u00e0m l\u01b0\u1ee3ng crom trong l\u1edbp ph\u1ee7 b\u1ec1 m\u1eb7t c\u1ee7a moay \u1ed1c b\u00e1nh xe.<\/p>\n<h1>3 Ti\u00eau chu\u1ea9n tham chi\u1ebfu<\/h1>\n<p>IEC 62312<\/p>\n<h1>4. D\u1ee5ng c\u1ee5 v\u00e0 h\u00f3a ch\u1ea5t<\/h1>\n<h2>4.1 D\u1ee5ng c\u1ee5 v\u00e0 thi\u1ebft b\u1ecb<\/h2>\n<h3>4.1.1 D\u1ee5ng c\u1ee5 ph\u00e2n t\u00edch<\/h3>\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 h\u1ea5p th\u1ee5 nguy\u00ean t\u1eed ng\u1ecdn l\u1eeda<\/td>\n<td>1 b\u1ed9<\/td>\n<td>\u2014<\/td>\n<td>\u0110\u00e8n cathode r\u1ed7ng chromium<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>B\u00ecnh kh\u00ed axetylen<\/td>\n<td>1 xi lanh<\/td>\n<td>\u0110\u1ed9 tinh khi\u1ebft \u2265 99,99%<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>M\u00e1y n\u00e9n kh\u00ed<\/td>\n<td>1 \u0111\u01a1n v\u1ecb<\/td>\n<td>\u00c1p su\u1ea5t kh\u00ed th\u1ea3i \u0111\u1ecbnh m\u1ee9c: 0,3 MPa<\/td>\n<td>\u2014<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"<p>1 Method Overview The wheel hub is thoroughly cleaned with ultrapure water and air-dried. A scraper is used to remove the topcoat, intermediate coating and primer on the surface. After microwave digestion, the concentration of chromium is determined by flame atomic absorption spectrometry at a wavelength of 357.9 nm. 2 Scope of Application Determination of [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":4892,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[36],"tags":[],"class_list":["post-4891","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-applications"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts\/4891","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=4891"}],"version-history":[{"count":1,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts\/4891\/revisions"}],"predecessor-version":[{"id":4893,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/posts\/4891\/revisions\/4893"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/media\/4892"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/media?parent=4891"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/categories?post=4891"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/vi\/wp-json\/wp\/v2\/tags?post=4891"}],"curies":[{"name":"WP","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}