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However, ESI faces major ionization competition phenomena that prevent the absolute quantification of the compounds of interest. On the other hand, comprehensive two-dimensional gas chromatography (GC\u2009\u00d7\u2009GC) coupled to specific detectors (HRMS or NCD) is able to quantify the main families identified in these complex matrices. In this paper, this innovative dual approach has been used to evaluate the ionization response of nitrogen compounds in gas oils as a case study. To this extent, a large gas oil dataset has been analyzed by GC\u2009\u00d7\u2009GC\/HRMS, GC\u2009\u00d7\u2009GC-NCD and ESI(+\/\u2212)-FT-ICR MS. Then, the concentrations obtained from GC\u2009\u00d7\u2009GC-NCD have been compared to those obtained from FT-ICR MS hence proving that strong ionization competitions are taking place and also depending on the origin of the sample. Finally, multilinear regressions (MLR) have been used to quantitatively predict nitrogen families from FT-ICR MS measurements as well as start rationalizing the ionization competition phenomena taking place between them in different types of gas oils.<\/jats:p>","DOI":"10.1038\/s41598-021-85854-7","type":"journal-article","created":{"date-parts":[[2021,3,19]],"date-time":"2021-03-19T09:05:27Z","timestamp":1616144727000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Towards a new pseudo-quantitative approach to evaluate the ionization response of nitrogen compounds in complex matrices"],"prefix":"10.1038","volume":"11","author":[{"given":"Julie","family":"Guillemant","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marion","family":"Lacoue-N\u00e8gre","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexandra","family":"Berlioz-Barbier","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Florian","family":"Albrieux","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luis P.","family":"de Oliveira","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jean-Fran\u00e7ois","family":"Joly","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ludovic","family":"Duponchel","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,3,19]]},"reference":[{"key":"85854_CR1","doi-asserted-by":"publisher","first-page":"3572","DOI":"10.1021\/ef1002364","volume":"24","author":"C von M\u00fchlen","year":"2010","unstructured":"von M\u00fchlen, C., de Oliveira, E. 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