Levitation Melting/Thermoconductometric Method for Determination of Nitrogen in Steel
A levitation melting/thermoconductometric method for determination of nitrogen in steel has been developed, in which metal samples are melted in a state of floatation by magnetic pressure. The present method needs no crucible, so it is free from contamination from crucibles. Nitrogen extracted from...
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| Veröffentlicht in: | Analytical chemistry (Washington) 1998-07, Vol.70 (14), p.2866-2869 |
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| container_title | Analytical chemistry (Washington) |
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| creator | Nishifuji, Masayuki Fujinami, Masanori Ono, Akihiro Chiba, Koichi |
| description | A levitation melting/thermoconductometric method for determination of nitrogen in steel has been developed, in which metal samples are melted in a state of floatation by magnetic pressure. The present method needs no crucible, so it is free from contamination from crucibles. Nitrogen extracted from a steel sample in a state of floatation was measured quantitatively with a thermal conductivity detector. About 5 min was required for nitrogen to be sufficiently extracted, versus only about 2 min for hydrogen. This difference was explained in terms of their diffusion velocities in molten iron. The calibration curve for nitrogen was linear to 156 μg/g, with a relative standard deviation of 6.5% at the 20 μg/g level. The present method was applied to determination of nitrogen in certified reference material JSS GS-5a, and the analytical result (17.5 ± 1.1 μg/g) was in good agreement with the certified value (17.0 μg/g). |
| doi_str_mv | 10.1021/ac9713262 |
| format | Article |
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The present method needs no crucible, so it is free from contamination from crucibles. Nitrogen extracted from a steel sample in a state of floatation was measured quantitatively with a thermal conductivity detector. About 5 min was required for nitrogen to be sufficiently extracted, versus only about 2 min for hydrogen. This difference was explained in terms of their diffusion velocities in molten iron. The calibration curve for nitrogen was linear to 156 μg/g, with a relative standard deviation of 6.5% at the 20 μg/g level. The present method was applied to determination of nitrogen in certified reference material JSS GS-5a, and the analytical result (17.5 ± 1.1 μg/g) was in good agreement with the certified value (17.0 μg/g).</description><identifier>ISSN: 0003-2700</identifier><identifier>EISSN: 1520-6882</identifier><identifier>DOI: 10.1021/ac9713262</identifier><identifier>CODEN: ANCHAM</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Analytical chemistry ; Chemical and thermal methods ; Chemistry ; Exact sciences and technology ; Nitrogen ; Steel</subject><ispartof>Analytical chemistry (Washington), 1998-07, Vol.70 (14), p.2866-2869</ispartof><rights>Copyright © 1998 American Chemical Society</rights><rights>1998 INIST-CNRS</rights><rights>Copyright American Chemical Society Jul 15, 1998</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-a342t-9c3050fc5c6f18b666a153f81703a7bb759545c6a764c3cd075abc418b2313633</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/ac9713262$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/ac9713262$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,780,784,2763,27075,27923,27924,56737,56787</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2328960$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Nishifuji, Masayuki</creatorcontrib><creatorcontrib>Fujinami, Masanori</creatorcontrib><creatorcontrib>Ono, Akihiro</creatorcontrib><creatorcontrib>Chiba, Koichi</creatorcontrib><title>Levitation Melting/Thermoconductometric Method for Determination of Nitrogen in Steel</title><title>Analytical chemistry (Washington)</title><addtitle>Anal. Chem</addtitle><description>A levitation melting/thermoconductometric method for determination of nitrogen in steel has been developed, in which metal samples are melted in a state of floatation by magnetic pressure. The present method needs no crucible, so it is free from contamination from crucibles. Nitrogen extracted from a steel sample in a state of floatation was measured quantitatively with a thermal conductivity detector. About 5 min was required for nitrogen to be sufficiently extracted, versus only about 2 min for hydrogen. This difference was explained in terms of their diffusion velocities in molten iron. The calibration curve for nitrogen was linear to 156 μg/g, with a relative standard deviation of 6.5% at the 20 μg/g level. The present method was applied to determination of nitrogen in certified reference material JSS GS-5a, and the analytical result (17.5 ± 1.1 μg/g) was in good agreement with the certified value (17.0 μg/g).</description><subject>Analytical chemistry</subject><subject>Chemical and thermal methods</subject><subject>Chemistry</subject><subject>Exact sciences and technology</subject><subject>Nitrogen</subject><subject>Steel</subject><issn>0003-2700</issn><issn>1520-6882</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><recordid>eNpl0EtLAzEQB_AgCtbHwW-wiAoeVidJk-wepb6pD7CKeAlpmtXoNtEkFf32RlYq6CmH_28mM4PQBoY9DATvK10LTAknC6iHGYGSVxVZRD0AoCURAMtoJcZnAIwB8x66HZp3m1Sy3hUXpk3WPe6PnkyYeu3dZKaTn5oUrM5hevKTovGhODQpA-u6Kt8UlzYF_2hcYV1xk4xp19BSo9po1n_eVXR7fDQanJbDq5OzwcGwVLRPUllrCgwazTRvcDXmnCvMaFNhAVSJ8ViwmvVzqATva6onIJga636mhGLKKV1FO13f1-DfZiYmObVRm7ZVzvhZlIRzxmoqMtz8A5_9LLg8myRYVKyqMM9ot0M6-BiDaeRrsFMVPiUG-X1dOb9utls_DVXUqm2CctrGeQGhpKo5ZFZ2zMZkPuaxCi-SCyqYHF3fyId7fndOjon8Xmi780rH3xH_f_8FLwqS2w</recordid><startdate>19980715</startdate><enddate>19980715</enddate><creator>Nishifuji, Masayuki</creator><creator>Fujinami, Masanori</creator><creator>Ono, Akihiro</creator><creator>Chiba, Koichi</creator><general>American Chemical Society</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7TA</scope><scope>7TB</scope><scope>7TM</scope><scope>7U5</scope><scope>7U7</scope><scope>7U9</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>H94</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>P64</scope></search><sort><creationdate>19980715</creationdate><title>Levitation Melting/Thermoconductometric Method for Determination of Nitrogen in Steel</title><author>Nishifuji, Masayuki ; Fujinami, Masanori ; Ono, Akihiro ; Chiba, Koichi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a342t-9c3050fc5c6f18b666a153f81703a7bb759545c6a764c3cd075abc418b2313633</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Analytical chemistry</topic><topic>Chemical and thermal methods</topic><topic>Chemistry</topic><topic>Exact sciences and technology</topic><topic>Nitrogen</topic><topic>Steel</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nishifuji, Masayuki</creatorcontrib><creatorcontrib>Fujinami, Masanori</creatorcontrib><creatorcontrib>Ono, Akihiro</creatorcontrib><creatorcontrib>Chiba, Koichi</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Biotechnology Research Abstracts</collection><collection>Ceramic Abstracts</collection><collection>Computer and Information Systems Abstracts</collection><collection>Corrosion Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Materials Business File</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Nucleic Acids Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Virology and AIDS Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Copper Technical Reference Library</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>Materials Research Database</collection><collection>ProQuest Computer Science Collection</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Computer and Information Systems Abstracts Academic</collection><collection>Computer and Information Systems Abstracts Professional</collection><collection>Biotechnology and BioEngineering Abstracts</collection><jtitle>Analytical chemistry (Washington)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nishifuji, Masayuki</au><au>Fujinami, Masanori</au><au>Ono, Akihiro</au><au>Chiba, Koichi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Levitation Melting/Thermoconductometric Method for Determination of Nitrogen in Steel</atitle><jtitle>Analytical chemistry (Washington)</jtitle><addtitle>Anal. Chem</addtitle><date>1998-07-15</date><risdate>1998</risdate><volume>70</volume><issue>14</issue><spage>2866</spage><epage>2869</epage><pages>2866-2869</pages><issn>0003-2700</issn><eissn>1520-6882</eissn><coden>ANCHAM</coden><abstract>A levitation melting/thermoconductometric method for determination of nitrogen in steel has been developed, in which metal samples are melted in a state of floatation by magnetic pressure. The present method needs no crucible, so it is free from contamination from crucibles. Nitrogen extracted from a steel sample in a state of floatation was measured quantitatively with a thermal conductivity detector. About 5 min was required for nitrogen to be sufficiently extracted, versus only about 2 min for hydrogen. This difference was explained in terms of their diffusion velocities in molten iron. The calibration curve for nitrogen was linear to 156 μg/g, with a relative standard deviation of 6.5% at the 20 μg/g level. The present method was applied to determination of nitrogen in certified reference material JSS GS-5a, and the analytical result (17.5 ± 1.1 μg/g) was in good agreement with the certified value (17.0 μg/g).</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><doi>10.1021/ac9713262</doi><tpages>4</tpages></addata></record> |
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| ispartof | Analytical chemistry (Washington), 1998-07, Vol.70 (14), p.2866-2869 |
| issn | 0003-2700 1520-6882 |
| language | eng |
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| source | ACS Publications |
| subjects | Analytical chemistry Chemical and thermal methods Chemistry Exact sciences and technology Nitrogen Steel |
| title | Levitation Melting/Thermoconductometric Method for Determination of Nitrogen in Steel |
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