Proton nuclear magnetic resonance (1H NMR) of flammable organic chemicals in radioactive high–level supernatant waste at the Savannah River Site (SRS)
Abstract The Savannah River Site stores approximately 36 million gallons of radioactive and hazardous waste that contains approximately 245 million curies. The waste is sent through various chemical processes to reduce its volume and to separate various components. The facility plans to replace form...
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creator | Fondeur, Fernando White, Thomas L. Coleman, Charles J. Diprete, David P. Nash, Charles A. Looney, Brian B. |
description | Abstract
The Savannah River Site stores approximately 36 million gallons of radioactive and hazardous waste that contains approximately 245 million curies. The waste is sent through various chemical processes to reduce its volume and to separate various components. The facility plans to replace formic acid (a chemical used to reduce soluble mercury) with glycolic acid. Recycle solution with glycolate may flow back to the tank farm, where the glycolate can generate hydrogen gas by thermal and radiolytic mechanisms. The current analytical method for detecting glycolate (ion chromatography) in supernatant requires a large dilution to reduce interference from the nitrate anions. Hydrogen nuclear magnetic resonance is an analytical method that requires less sample dilution. It takes advantage of the CH
2
group in glycolate. Liquid samples were spiked with four different levels of glycolate to build a calibration line, as it is recommended in the standard addition method. The detection and quantitation limits determined were 1 and 5 ppm, respectively, for 32 scans, which is well below the process limit of 10 ppm. In one test, 800 scans of a supernatant spiked with 1 ppm glycolate resulted in a ‐CH
2
peak with a signal‐to‐noise ratio of 36. |
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The Savannah River Site stores approximately 36 million gallons of radioactive and hazardous waste that contains approximately 245 million curies. The waste is sent through various chemical processes to reduce its volume and to separate various components. The facility plans to replace formic acid (a chemical used to reduce soluble mercury) with glycolic acid. Recycle solution with glycolate may flow back to the tank farm, where the glycolate can generate hydrogen gas by thermal and radiolytic mechanisms. The current analytical method for detecting glycolate (ion chromatography) in supernatant requires a large dilution to reduce interference from the nitrate anions. Hydrogen nuclear magnetic resonance is an analytical method that requires less sample dilution. It takes advantage of the CH
2
group in glycolate. Liquid samples were spiked with four different levels of glycolate to build a calibration line, as it is recommended in the standard addition method. The detection and quantitation limits determined were 1 and 5 ppm, respectively, for 32 scans, which is well below the process limit of 10 ppm. In one test, 800 scans of a supernatant spiked with 1 ppm glycolate resulted in a ‐CH
2
peak with a signal‐to‐noise ratio of 36.</description><identifier>ISSN: 0749-1581</identifier><identifier>EISSN: 1097-458X</identifier><language>eng</language><publisher>United States: Wiley</publisher><subject>glycolate anion ; INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY ; NMR ; solvent suppression ; standard addition method ; supernatant</subject><ispartof>Magnetic resonance in chemistry, 2023-03, Vol.61 (7)</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000000191821311</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885</link.rule.ids><backlink>$$Uhttps://www.osti.gov/servlets/purl/1997253$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Fondeur, Fernando</creatorcontrib><creatorcontrib>White, Thomas L.</creatorcontrib><creatorcontrib>Coleman, Charles J.</creatorcontrib><creatorcontrib>Diprete, David P.</creatorcontrib><creatorcontrib>Nash, Charles A.</creatorcontrib><creatorcontrib>Looney, Brian B.</creatorcontrib><creatorcontrib>Savannah River Site (SRS), Aiken, SC (United States)</creatorcontrib><creatorcontrib>Savannah River National Laboratory (SRNL), Aiken, SC (United States)</creatorcontrib><title>Proton nuclear magnetic resonance (1H NMR) of flammable organic chemicals in radioactive high–level supernatant waste at the Savannah River Site (SRS)</title><title>Magnetic resonance in chemistry</title><description>Abstract
The Savannah River Site stores approximately 36 million gallons of radioactive and hazardous waste that contains approximately 245 million curies. The waste is sent through various chemical processes to reduce its volume and to separate various components. The facility plans to replace formic acid (a chemical used to reduce soluble mercury) with glycolic acid. Recycle solution with glycolate may flow back to the tank farm, where the glycolate can generate hydrogen gas by thermal and radiolytic mechanisms. The current analytical method for detecting glycolate (ion chromatography) in supernatant requires a large dilution to reduce interference from the nitrate anions. Hydrogen nuclear magnetic resonance is an analytical method that requires less sample dilution. It takes advantage of the CH
2
group in glycolate. Liquid samples were spiked with four different levels of glycolate to build a calibration line, as it is recommended in the standard addition method. The detection and quantitation limits determined were 1 and 5 ppm, respectively, for 32 scans, which is well below the process limit of 10 ppm. In one test, 800 scans of a supernatant spiked with 1 ppm glycolate resulted in a ‐CH
2
peak with a signal‐to‐noise ratio of 36.</description><subject>glycolate anion</subject><subject>INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY</subject><subject>NMR</subject><subject>solvent suppression</subject><subject>standard addition method</subject><subject>supernatant</subject><issn>0749-1581</issn><issn>1097-458X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNqNjz1OxDAQhS0EEuHnDiOq3SJSTDbKpkagbUAooaBbDcMkNnLGyPaGljvQcD5OggsOQPWK931Pekeq0FXXlptm-3ysiqrddKVutvpUncX4VlVV17V1ob4fg09eQA7kGAPMOAknSxA4ekEhhpXewcN9vwY_wuhwnvHFMfgwoWSODM-W0EWwAgFfrUdKdmEwdjI_n1-OF3YQD-8cBBNKgg-MiQETJMMw4IIiaKDPToDB5mo19MP6Qp2MeZUv__JcXd3dPt3sSh-T3UfKIBnyIkxpr_OZ66au_wX9An_zWrE</recordid><startdate>20230326</startdate><enddate>20230326</enddate><creator>Fondeur, Fernando</creator><creator>White, Thomas L.</creator><creator>Coleman, Charles J.</creator><creator>Diprete, David P.</creator><creator>Nash, Charles A.</creator><creator>Looney, Brian B.</creator><general>Wiley</general><scope>OIOZB</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000000191821311</orcidid></search><sort><creationdate>20230326</creationdate><title>Proton nuclear magnetic resonance (1H NMR) of flammable organic chemicals in radioactive high–level supernatant waste at the Savannah River Site (SRS)</title><author>Fondeur, Fernando ; White, Thomas L. ; Coleman, Charles J. ; Diprete, David P. ; Nash, Charles A. ; Looney, Brian B.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-osti_scitechconnect_19972533</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>glycolate anion</topic><topic>INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY</topic><topic>NMR</topic><topic>solvent suppression</topic><topic>standard addition method</topic><topic>supernatant</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fondeur, Fernando</creatorcontrib><creatorcontrib>White, Thomas L.</creatorcontrib><creatorcontrib>Coleman, Charles J.</creatorcontrib><creatorcontrib>Diprete, David P.</creatorcontrib><creatorcontrib>Nash, Charles A.</creatorcontrib><creatorcontrib>Looney, Brian B.</creatorcontrib><creatorcontrib>Savannah River Site (SRS), Aiken, SC (United States)</creatorcontrib><creatorcontrib>Savannah River National Laboratory (SRNL), Aiken, SC (United States)</creatorcontrib><collection>OSTI.GOV - Hybrid</collection><collection>OSTI.GOV</collection><jtitle>Magnetic resonance in chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fondeur, Fernando</au><au>White, Thomas L.</au><au>Coleman, Charles J.</au><au>Diprete, David P.</au><au>Nash, Charles A.</au><au>Looney, Brian B.</au><aucorp>Savannah River Site (SRS), Aiken, SC (United States)</aucorp><aucorp>Savannah River National Laboratory (SRNL), Aiken, SC (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Proton nuclear magnetic resonance (1H NMR) of flammable organic chemicals in radioactive high–level supernatant waste at the Savannah River Site (SRS)</atitle><jtitle>Magnetic resonance in chemistry</jtitle><date>2023-03-26</date><risdate>2023</risdate><volume>61</volume><issue>7</issue><issn>0749-1581</issn><eissn>1097-458X</eissn><abstract>Abstract
The Savannah River Site stores approximately 36 million gallons of radioactive and hazardous waste that contains approximately 245 million curies. The waste is sent through various chemical processes to reduce its volume and to separate various components. The facility plans to replace formic acid (a chemical used to reduce soluble mercury) with glycolic acid. Recycle solution with glycolate may flow back to the tank farm, where the glycolate can generate hydrogen gas by thermal and radiolytic mechanisms. The current analytical method for detecting glycolate (ion chromatography) in supernatant requires a large dilution to reduce interference from the nitrate anions. Hydrogen nuclear magnetic resonance is an analytical method that requires less sample dilution. It takes advantage of the CH
2
group in glycolate. Liquid samples were spiked with four different levels of glycolate to build a calibration line, as it is recommended in the standard addition method. The detection and quantitation limits determined were 1 and 5 ppm, respectively, for 32 scans, which is well below the process limit of 10 ppm. In one test, 800 scans of a supernatant spiked with 1 ppm glycolate resulted in a ‐CH
2
peak with a signal‐to‐noise ratio of 36.</abstract><cop>United States</cop><pub>Wiley</pub><orcidid>https://orcid.org/0000000191821311</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | glycolate anion INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY NMR solvent suppression standard addition method supernatant |
title | Proton nuclear magnetic resonance (1H NMR) of flammable organic chemicals in radioactive high–level supernatant waste at the Savannah River Site (SRS) |
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