{"id":10691,"date":"2019-12-17T13:00:19","date_gmt":"2019-12-17T13:00:19","guid":{"rendered":"https:\/\/www.thermofisher.com\/blog\/metals\/?p=10691"},"modified":"2026-07-31T18:14:49","modified_gmt":"2026-07-31T18:14:49","slug":"computing-rh-in-grams-for-an-xrf-analysis","status":"publish","type":"post","link":"https:\/\/www.thermofisher.com\/blog\/metals\/computing-rh-in-grams-for-an-xrf-analysis\/","title":{"rendered":"Computing Rh in Grams for an XRF Analysis"},"content":{"rendered":"

\"ComputingA reader recently asked how to compute the output of “Rh” in grams if the sample quantity is 200 grams when using a precious metals analyzer that utilizes XRF technology.<\/span><\/p>\n

XRF is a nondestructive testing technique<\/span><\/span><\/span><\/a> that can analyze a metal sample in seconds with little to no need for sample preparation. <\/span>Portable XRF precious metal analyzers<\/span><\/span><\/a> deliver fast, accurate elemental analysis and karat value in seconds. In addition, handheld XRF analyzers are capable of distinguishing alloy grades that are nearly identical in composition to one another. <\/span><\/p>\n

Rh is the symbol for Rhodium, number 45 on the <\/span>Periodic table<\/span><\/span><\/a>, which is a silvery white metal and a member of the platinum group metals (PGM).  <\/span>It is a highly active catalyst, and widely used in vehicle emission control systems. Rhodium can be alloyed with other metals to harden material and improve corrosion, and is also used to make glass thanks to its high melting point and temperature stability.<\/span><\/p>\n

When the reader analyzed material with an XRF analyzer<\/a>, he received the following result:<\/p>\n

<\/p>\n

For the results screen provided by the reader, the elemental composition is reported in weight percent.  <\/span>To answer this user’s question:<\/p>\n

The reported result on the screen for Rh = 2.91 wt.%.<\/p>\n

Assuming homogenous material for all 200g of the sample, one would calculate Rh weight as 2.91 wt. % * 200g = 0.0291 * 200g = 5.82g.<\/p>\n

To learn more about XRF technology, visit the XRF technology page<\/a> on our website, or download the free ebook: Portable XRF Technology for the Non-Scientist <\/a><\/em><\/p>\n

 <\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

A reader recently asked how to compute the output of “Rh” in grams if the sample quantity is 200 grams when using a precious metals analyzer that utilizes XRF technology. XRF is a nondestructive testing technique that can analyze a metal sample in seconds with little to no need for sample preparation. Portable XRF precious metal analyzers deliver fast,<\/p>\n","protected":false},"author":383,"featured_media":10747,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_monsterinsights_skip_tracking":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[5],"tags":[],"division":[],"class_list":{"0":"post-10691","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-precious-metals","8":"entry"},"_selected_authors":[],"_selected_reviewers":[],"acf":[],"yoast_head":"\nComputing Rh in Grams for an XRF Analysis - 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A recent \u00a0NBC Connecticut investigation uncovered fake American Eagle silver bullion coins being sold online at prices far below market value. Although the coins\u2026","rel":"","context":"In "Precious Metals"","block_context":{"text":"Precious Metals","link":"https:\/\/admin.acceleratingscience.com\/metals\/precious-metals\/"},"img":{"alt_text":"Silver coins and silver bullion","src":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/05\/iStock-482324309.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/05\/iStock-482324309.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/05\/iStock-482324309.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/05\/iStock-482324309.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/05\/iStock-482324309.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/05\/iStock-482324309.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":13418,"url":"https:\/\/www.thermofisher.com\/blog\/metals\/buyer-and-seller-beware-how-to-detect-fake-gold-in-current-times\/","url_meta":{"origin":10691,"position":1},"title":"Buyer and Seller Beware: How to Detect Fake Gold in Current Times","author":"Marlene Gasdia-Cochrane","date":"April 7, 2026","format":false,"excerpt":"A Practical Guide for Jewelers and Pawn Shop Owners The rise in gold prices and continued market volatility have made precious metals more attractive\u2014not just to legitimate sellers, but also to increasingly sophisticated counterfeiters. For jewelers, cash-for-gold operators, and pawn shop owners, the ability to accurately verify gold authenticity and\u2026","rel":"","context":"In "General\/Industry"","block_context":{"text":"General\/Industry","link":"https:\/\/admin.acceleratingscience.com\/metals\/general-industry-metals\/"},"img":{"alt_text":"Clasp on a 14k Gold necklace with markings on a black background","src":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/04\/iStock-1133424222_14k-scaled.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/04\/iStock-1133424222_14k-scaled.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/04\/iStock-1133424222_14k-scaled.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/04\/iStock-1133424222_14k-scaled.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/04\/iStock-1133424222_14k-scaled.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/04\/iStock-1133424222_14k-scaled.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":13598,"url":"https:\/\/www.thermofisher.com\/blog\/metals\/how-rhodium-plating-impacts-gold-xrf-analysis-and-karat-verification\/","url_meta":{"origin":10691,"position":2},"title":"How Rhodium Plating Impacts Gold XRF Analysis and Karat Verification","author":"Marlene Gasdia-Cochrane","date":"July 28, 2026","format":false,"excerpt":"Summary Accurate gold analysis is essential for jewelry verification, precious metals trading, refining, and quality control. One of the most widely used methods for determining gold content is X-ray fluorescence (XRF) analysis, a non-destructive testing technique that quickly evaluates metal composition. However, rhodium plating\u2014a common surface treatment used on white\u2026","rel":"","context":"In "Metals & Alloys"","block_context":{"text":"Metals & Alloys","link":"https:\/\/admin.acceleratingscience.com\/metals\/metals-and-alloys\/"},"img":{"alt_text":"Banner of a cube symbolizing element number 45 of the periodic table. Rhodium. 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Those who have bought an engagement\u2026","rel":"","context":"In "Precious Metals"","block_context":{"text":"Precious Metals","link":"https:\/\/admin.acceleratingscience.com\/metals\/precious-metals\/"},"img":{"alt_text":"ring in box with Valentine heart decorations","src":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2019\/02\/istock-96917265_valentinejewelry.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2019\/02\/istock-96917265_valentinejewelry.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2019\/02\/istock-96917265_valentinejewelry.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2019\/02\/istock-96917265_valentinejewelry.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":12889,"url":"https:\/\/www.thermofisher.com\/blog\/metals\/diwali-sparks-gold-buying-frenzy\/","url_meta":{"origin":10691,"position":4},"title":"Diwali Sparks Gold-Buying Frenzy","author":"Marlene Gasdia-Cochrane","date":"October 28, 2025","format":false,"excerpt":"Forty tons of gold, worth $11 billion, was purchased by India in the first two days of Diwali. About 8,000 miles away in New York City, there was a gold buying rush and a cash-for-gold frenzy. Buyers and sellers are banking on the hope that the gold in the pieces\u2026","rel":"","context":"In "Precious Metals"","block_context":{"text":"Precious Metals","link":"https:\/\/admin.acceleratingscience.com\/metals\/precious-metals\/"},"img":{"alt_text":"Diwali Puja Thali With Flowers, Diya, And Gifts","src":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2025\/10\/iStock-2240362443-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2025\/10\/iStock-2240362443-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2025\/10\/iStock-2240362443-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2025\/10\/iStock-2240362443-1.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2025\/10\/iStock-2240362443-1.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2025\/10\/iStock-2240362443-1.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":13429,"url":"https:\/\/www.thermofisher.com\/blog\/metals\/how-to-identify-aluminum-in-a-scrap-metal-recycling-yard\/","url_meta":{"origin":10691,"position":5},"title":"How to Identify Aluminum in a Scrap Metal Recycling Yard","author":"Marlene Gasdia-Cochrane","date":"May 5, 2026","format":false,"excerpt":"Identifying aluminum in a scrap metal recycling yard is more challenging than it might seem. While aluminum is one of the most widely used and recycled metals, its physical similarities to other materials, combined with the complexity of aluminum alloys, make accurate identification difficult. This challenge has significant implications for\u2026","rel":"","context":"In "General\/Industry"","block_context":{"text":"General\/Industry","link":"https:\/\/admin.acceleratingscience.com\/metals\/general-industry-metals\/"},"img":{"alt_text":"Scrap metal pieces laying in a pile","src":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/04\/iStock-133993685_scrapaluminum.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/04\/iStock-133993685_scrapaluminum.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/04\/iStock-133993685_scrapaluminum.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/04\/iStock-133993685_scrapaluminum.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/04\/iStock-133993685_scrapaluminum.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2026\/04\/iStock-133993685_scrapaluminum.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]}],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/admin.acceleratingscience.com\/metals\/wp-content\/uploads\/sites\/4\/2019\/12\/istock-904033242_rhsymbol.jpg","_links":{"self":[{"href":"https:\/\/www.thermofisher.com\/blog\/metals\/wp-json\/wp\/v2\/posts\/10691","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.thermofisher.com\/blog\/metals\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.thermofisher.com\/blog\/metals\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.thermofisher.com\/blog\/metals\/wp-json\/wp\/v2\/users\/383"}],"replies":[{"embeddable":true,"href":"https:\/\/www.thermofisher.com\/blog\/metals\/wp-json\/wp\/v2\/comments?post=10691"}],"version-history":[{"count":1,"href":"https:\/\/www.thermofisher.com\/blog\/metals\/wp-json\/wp\/v2\/posts\/10691\/revisions"}],"predecessor-version":[{"id":13652,"href":"https:\/\/www.thermofisher.com\/blog\/metals\/wp-json\/wp\/v2\/posts\/10691\/revisions\/13652"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.thermofisher.com\/blog\/metals\/wp-json\/wp\/v2\/media\/10747"}],"wp:attachment":[{"href":"https:\/\/www.thermofisher.com\/blog\/metals\/wp-json\/wp\/v2\/media?parent=10691"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.thermofisher.com\/blog\/metals\/wp-json\/wp\/v2\/categories?post=10691"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.thermofisher.com\/blog\/metals\/wp-json\/wp\/v2\/tags?post=10691"},{"taxonomy":"division","embeddable":true,"href":"https:\/\/www.thermofisher.com\/blog\/metals\/wp-json\/wp\/v2\/division?post=10691"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}