{"id":5169,"date":"2015-05-21T10:00:06","date_gmt":"2015-05-21T16:00:06","guid":{"rendered":"https:\/\/www.coleparmer.com\/blog\/?p=5169"},"modified":"2022-11-04T11:55:57","modified_gmt":"2022-11-04T16:55:57","slug":"analyzing-samples-for-metals-part-two","status":"publish","type":"post","link":"https:\/\/www.coleparmer.com\/blog\/analyzing-samples-for-metals-part-two\/","title":{"rendered":"Analyzing Samples for Metals (Part Two)"},"content":{"rendered":"<p>Manufacturers with NPDES permits must detect and quantify specified <a href=\"https:\/\/www.environmentalexpress.com\/ee\/s\/topic\/0TO4W000009xF08WAE\/metals\" target=\"_blank\" rel=\"noopener noreferrer nofollow noopener noreferrer\">metals<\/a> on a regular basis. In part one, we detailed the process of metals digestion. What happens next?<\/p>\n<p><strong>The Process: Post Digestion Filtration<\/strong><\/p>\n<p>After digestion, samples are diluted to fill lines in digestion cups. To filter the sample, a <a href=\"https:\/\/www.coleparmer.com\/Category\/Environmental_Express_FilterMate_Systems\/65851?referred_id=5618\" target=\"_blank\" rel=\"noopener noreferrer nofollow noopener noreferrer\">FilterMate<\/a><sup><span style=\"font-family: 'Arial','sans-serif';\"><span style=\"color: #000000; font-size: small;\">\u00ae <\/span><\/span><\/sup>filter assembly is pushed through the sample and the detachable plunger is removed. The sample is now ready for analysis or to be capped for storage.<\/p>\n<p><strong>The Process: Metals Analysis<\/strong><\/p>\n<p>Next, samples are analyzed to determine which metals are present. The sample composition is assessed using one of the following methods of metals analysis:<\/p>\n<ul>\n<ul>\n<li><strong><u>Flame AA:<\/u><\/strong> There are very few Flame AA instruments in use. Flame AA analysis may not reach the detection limits required for water analysis. Standards can be an issue as some Flame AA instruments require the standard to be preserved in a certain way.<\/li>\n<li><b><strong><u>Graphite Furnace Atomic Absorption (GFAA):<\/u><\/strong> <\/b>The graphite furnace vaporizes the sample and atomizes the analyte in this process of measuring concentration. Matrix Modifiers are used to optimize recoveries during testing. They help target the analyte and raise its vaporization temperatures, preventing the analyte from being lost during the pyrolysis step.<\/li>\n<li><strong><u>ICP \/ ICP-MS:<\/u><\/strong> Inductively coupled plasma-mass spectrometry detects metals at low level concentrations. In addition to this instrument, related items include sampler and skimmer cones, electron multipliers, spray chambers, nebulizers, and torches.<\/li>\n<\/ul>\n<\/ul>\n<p><strong>The Significance of Running Metals<\/strong><\/p>\n<p>Unlike other types of pollutants, there is often no visible indication of metals contamination. According to the EPA, all metals are toxic at some level and some metals are toxic in minute amounts. Between the biological effects of metals on wildlife and the adverse impact on human health, metals analysis is a crucial and necessary process in research, production, and environmental science.<\/p>\n<p><em>Find more products for <\/em><a href=\"https:\/\/www.coleparmer.com\/Category\/Environmental_Testing\/59346?referred_id=5618\" target=\"_blank\" rel=\"noopener noreferrer nofollow noopener noreferrer\"><em>environmental testing<\/em><\/a><em>.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Manufacturers with NPDES permits must detect and quantify specified metals on a regular basis. In part one, we detailed the process of metals digestion. What happens next? The Process: Post Digestion Filtration After digestion, samples&#8230;<\/p>\n","protected":false},"author":20,"featured_media":5172,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[528,1820,1822],"class_list":["post-5169","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-environmental-2","tag-environmental-testing","tag-metals-analysis","tag-metals-digestion"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Analyzing Samples for Metals (Part Two) | from Cole-Parmer Blog<\/title>\n<meta name=\"description\" content=\"Manufacturers with NPDES permits must detect and quantify specified metals. In part one, we detailed the process of metals digestion. 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