{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T09:51:07Z","timestamp":1791107467906,"version":"4.1.0"},"reference-count":27,"publisher":"Wiley","issue":"13","license":[{"start":{"date-parts":[[2009,6,5]],"date-time":"2009-06-05T00:00:00Z","timestamp":1244160000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Rapid Comm Mass Spectrometry"],"published-print":{"date-parts":[[2009,7,15]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Observations made during the\n                    <jats:sup>13<\/jats:sup>\n                    C isotope analysis of gaseous CO\n                    <jats:sub>2<\/jats:sub>\n                    in the simultaneous presence of argon in the ion source of the isotope ratio mass spectrometer prompted us to investigate what influence the simultaneous presence of nitrogen would have on both accuracy and precision of bulk\n                    <jats:sup>2<\/jats:sup>\n                    H isotope analysis of nitrogen\u2010rich organic compounds. Initially an international reference material, IAEA\u2010CH7, was mixed with silver nitrate in various ratios to assess the impact that N\n                    <jats:sub>2<\/jats:sub>\n                    evolved from the pyrolysis of nitrogen\u2010rich organic compounds would have on measured\n                    <jats:italic>\u03b4<\/jats:italic>\n                    <jats:sup>2<\/jats:sup>\n                    H\u2010values of IAEA\u2010CH7. In a subsequent experiment, benzoic acid was mixed with silver nitrate to mimic the N:H ratio of organic\u2010rich nitrogen compounds such as cellulose nitrate and RDX. The results of both experiments showed a significant deterioration of both accuracy and precision for the expected\n                    <jats:italic>\u03b4<\/jats:italic>\n                    <jats:sup>2<\/jats:sup>\n                    H values for IAEA\u2010CH7 and benzoic acid when model mixtures were converted into hydrogen and nitrogen, and subsequently separated by gas chromatography using standard experimental conditions, namely a 60\u2009cm packed column with molecular sieve 5\u2009\u00c5 as stationary phase held at a temperature of 85\u00b0C. It was found that bulk\n                    <jats:sup>2<\/jats:sup>\n                    H stable isotope analysis of nitrogen\u2010rich organic compounds employing published standard conditions can result in a loss of accuracy and precision yielding\n                    <jats:italic>\u03b4<\/jats:italic>\n                    <jats:sup>2<\/jats:sup>\n                    H values that are 5 to 25\u2030 too negative, thus suggesting, for example, that tree\u2010ring\n                    <jats:sup>2<\/jats:sup>\n                    H isotope data based on cellulose nitrate may have to be revised. Copyright \u00a9 2009 John Wiley &amp; Sons, Ltd.\n                  <\/jats:p>","DOI":"10.1002\/rcm.4112","type":"journal-article","created":{"date-parts":[[2009,6,5]],"date-time":"2009-06-05T05:30:03Z","timestamp":1244179803000},"page":"2011-2016","source":"Crossref","is-referenced-by-count":34,"title":["N\n                    <sub>2<\/sub>\n                    : a potential pitfall for bulk\n                    <sup>2<\/sup>\n                    H isotope analysis of explosives and other nitrogen\u2010rich compounds by continuous\u2010flow isotope\u2010ratio mass spectrometry"],"prefix":"10.1002","volume":"23","author":[{"given":"Wolfram","family":"Meier\u2010Augenstein","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Helen F.","family":"Kemp","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Claire M.","family":"Lock","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2009,6,5]]},"reference":[{"key":"e_1_2_6_2_2","doi-asserted-by":"publisher","DOI":"10.1021\/ac960935r"},{"key":"e_1_2_6_3_2","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1097-0231(19960610)10:8<969::AID-RCM532>3.0.CO;2-O"},{"key":"e_1_2_6_4_2","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1097-0231(19990228)13:4<271::AID-RCM468>3.0.CO;2-6"},{"key":"e_1_2_6_5_2","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1097-0231(19990715)13:13<1226::AID-RCM575>3.0.CO;2-9"},{"key":"e_1_2_6_6_2","doi-asserted-by":"publisher","DOI":"10.1021\/es990804i"},{"key":"e_1_2_6_7_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00217-003-0801-5"},{"key":"e_1_2_6_8_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-8137.2006.01843.x"},{"key":"e_1_2_6_9_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-8137.2007.02213.x"},{"key":"e_1_2_6_10_2","doi-asserted-by":"publisher","DOI":"10.1002\/rcm.3026"},{"key":"e_1_2_6_11_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0169-7722(02)00085-2"},{"key":"e_1_2_6_12_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00442-004-1813-y"},{"key":"e_1_2_6_13_2","doi-asserted-by":"publisher","DOI":"10.1002\/rcm.2088"},{"key":"e_1_2_6_14_2","doi-asserted-by":"publisher","DOI":"10.1002\/rcm.3209"},{"key":"e_1_2_6_15_2","doi-asserted-by":"publisher","DOI":"10.1002\/rcm.2626"},{"key":"e_1_2_6_16_2","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.252747799"},{"key":"e_1_2_6_17_2","doi-asserted-by":"publisher","DOI":"10.1021\/jf052043a"},{"key":"e_1_2_6_18_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00216-007-1302-3"},{"key":"e_1_2_6_19_2","doi-asserted-by":"publisher","DOI":"10.1021\/jf0509613"},{"key":"e_1_2_6_20_2","doi-asserted-by":"publisher","DOI":"10.1002\/rcm.3940"},{"key":"e_1_2_6_21_2","doi-asserted-by":"publisher","DOI":"10.1002\/rcm.3958"},{"key":"e_1_2_6_22_2","doi-asserted-by":"publisher","DOI":"10.1021\/ac0700023"},{"key":"e_1_2_6_23_2","doi-asserted-by":"publisher","DOI":"10.1002\/rcm.3183"},{"key":"e_1_2_6_24_2","doi-asserted-by":"publisher","DOI":"10.1002\/rcm.258"},{"key":"e_1_2_6_25_2","doi-asserted-by":"publisher","DOI":"10.1021\/ac801170v"},{"key":"e_1_2_6_26_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0009-2541(01)00262-5"},{"key":"e_1_2_6_27_2","doi-asserted-by":"publisher","DOI":"10.1351\/pac199466020273"},{"key":"e_1_2_6_28_2","doi-asserted-by":"publisher","DOI":"10.1016\/0375-6505(95)00024-0"}],"container-title":["Rapid Communications in Mass Spectrometry"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Frcm.4112","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Frcm.4112","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/analyticalsciencejournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/rcm.4112","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,26]],"date-time":"2025-10-26T11:33:21Z","timestamp":1761478401000},"score":1,"resource":{"primary":{"URL":"https:\/\/analyticalsciencejournals.onlinelibrary.wiley.com\/doi\/10.1002\/rcm.4112"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2009,6,5]]},"references-count":27,"journal-issue":{"issue":"13","published-print":{"date-parts":[[2009,7,15]]}},"alternative-id":["10.1002\/rcm.4112"],"URL":"https:\/\/doi.org\/10.1002\/rcm.4112","archive":["Portico"],"relation":{},"ISSN":["0951-4198","1097-0231"],"issn-type":[{"value":"0951-4198","type":"print"},{"value":"1097-0231","type":"electronic"}],"subject":[],"published":{"date-parts":[[2009,6,5]]}}}