{"id":4186,"date":"2017-05-23T00:00:42","date_gmt":"2017-05-22T22:00:42","guid":{"rendered":"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/?p=4186"},"modified":"2017-05-23T00:01:07","modified_gmt":"2017-05-22T22:01:07","slug":"determinacio-semiquantitativa-de-lamoni-en-laigua","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/modul-b\/determinacio-semiquantitativa-de-lamoni-en-laigua\/","title":{"rendered":"Determinaci\u00f3 semiquantitativa de l&#8217;amoni en l&#8217;aigua"},"content":{"rendered":"<p><a href=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/rat-hanna.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-4534 aligncenter\" src=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/rat-hanna.png\" alt=\"rat hanna\" width=\"479\" height=\"223\" srcset=\"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/rat-hanna.png 891w, https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/rat-hanna-300x140.png 300w, https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/rat-hanna-768x358.png 768w\" sizes=\"auto, (max-width: 479px) 100vw, 479px\" \/><\/a><\/p>\n<p>Aquesta \u00e9s una de les pr\u00e0ctica que vam realitzar durant els Tallers a la <a href=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/general\/reportatge-sobre-les-iii-jornada-cientifica\/\" target=\"_blank\">III Jornada Cient\u00edfica<\/a> per als alumnes de 1r de Batxillerat.<\/p>\n<p>L&#8217;amoni, quan apareix en concentracions massa elevades, pot esdevenir t\u00f2xic per a altres organismes. La pres\u00e8ncia de quantitats d&#8217;amoni anormalment elevades als medis aqu\u00e0tics sol ser deguda a abocaments de diverses proced\u00e8ncies, tant puntuals com difusos. Per aix\u00f2 \u00e9s important realitzar la seva determinaci\u00f3 en aig\u00fces.<a href=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/colorimetre.png\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4533 alignright\" src=\"http:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/colorimetre.png\" alt=\"colorimetre\" width=\"155\" height=\"249\" srcset=\"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/colorimetre.png 283w, https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-content\/uploads\/usu644\/2017\/05\/colorimetre-187x300.png 187w\" sizes=\"auto, (max-width: 155px) 100vw, 155px\" \/><\/a><\/p>\n<p>Per fer la determinaci\u00f3, utilitzem un color\u00edmetre. Primer de tot, encenem l&#8217;aparell picant al bot\u00f3, i quan apareixi C.1, junt amb &#8220;Add&#8221; i la paraula &#8220;Press&#8221; parpellejant, l&#8217;equip ja est\u00e0 llest.<\/p>\n<p>Omplim la cubeta amb 10 ml de mostra, col\u00b7loquem la tapa i homogene\u00eftzem. Ho fiquem en el porta-cubeta de l&#8217;aparell i tanquem la tapa. Al picar el bot\u00f3, fa la mesura i aix\u00ed ja tenim el blanc de mostra.<\/p>\n<p>Un cop fet apareixer\u00e0 el mateix que abans per\u00f2, en comptes de C.1 ser\u00e0 C.2. Traiem la cubeta i hi afegim 4 gotes del reactiu HI 715A-0, col\u00b7loquem la tapa i agitem. Despr\u00e9s hi fiquem 4 gotes del reactiu\u00a0HI 715B-0, tanquem i agitem.<\/p>\n<p>Posem la cubeta al porta-cubetes de l&#8217;aparell i mantenim pressionat el bot\u00f3 fins que ens surt un temporitzador de 3 minuts i 30 segons. Passat aquest temps, el mesurador ens mostra la concentraci\u00f3 d&#8217;amoni en ppm.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aquesta \u00e9s una de les pr\u00e0ctica que vam realitzar durant els Tallers a la III Jornada Cient\u00edfica per als alumnes [&hellip;]<\/p>\n","protected":false},"author":135,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[174],"tags":[],"class_list":["post-4186","post","type-post","status-publish","format-standard","hentry","category-modul-b"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/posts\/4186","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/users\/135"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/comments?post=4186"}],"version-history":[{"count":3,"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/posts\/4186\/revisions"}],"predecessor-version":[{"id":4619,"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/posts\/4186\/revisions\/4619"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/media?parent=4186"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/categories?post=4186"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/ies-merce-rodoreda\/wp-json\/wp\/v2\/tags?post=4186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}