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Quantitative analyses of S, Ni, and V were accomplished with LA-ICP-OES using external calibration with the C line as internal standard. The aromatic\/paraffinic nature of the asphaltenes was also obtained throughout the H\/C ratio using LIBS and partial least square regression model. The results showed very good agreement (\u00b110%) between the concentration obtained by LA-ICP-OES and microwave-assisted acid digestion values.<\/jats:p>","DOI":"10.1177\/0003702818819497","type":"journal-article","created":{"date-parts":[[2018,11,27]],"date-time":"2018-11-27T23:09:10Z","timestamp":1543360150000},"page":"540-549","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":18,"title":["Elemental Analysis of Asphaltenes Using Simultaneous Laser-Induced Breakdown Spectroscopy (LIBS)\u2013Laser Ablation Inductively Coupled Plasma Optical Emission Spectrometry (LA-ICP-OES)"],"prefix":"10.1177","volume":"73","author":[{"given":"Dayana","family":"Oropeza","sequence":"first","affiliation":[{"name":"Lawrence Berkeley National Laboratory, Berkeley, CA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jhanis","family":"Gonz\u00e1lez","sequence":"additional","affiliation":[{"name":"Lawrence Berkeley National Laboratory, Berkeley, CA, USA"},{"name":"Applied Spectra, Inc., Fremont, CA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7598-4049","authenticated-orcid":false,"given":"Jos\u00e9","family":"Chirinos","sequence":"additional","affiliation":[{"name":"Universidad Central de Venezuela, Escuela de Qu\u00edmica, Caracas, Venezuela"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3498-5314","authenticated-orcid":false,"given":"Vassilia","family":"Zorba","sequence":"additional","affiliation":[{"name":"Lawrence Berkeley National Laboratory, Berkeley, CA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Estrella","family":"Rogel","sequence":"additional","affiliation":[{"name":"Chevron Energy Technology Company, Richmond, CA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C\u00e9sar","family":"Ovalles","sequence":"additional","affiliation":[{"name":"Chevron Energy Technology Company, Richmond, CA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Francisco","family":"L\u00f3pez-Linares","sequence":"additional","affiliation":[{"name":"Chevron Energy Technology Company, Richmond, CA, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2019,1,15]]},"reference":[{"key":"bibr1-0003702818819497","volume-title":"Petroleum Chemistry, and Refining","author":"Speight J.G.","year":"1998"},{"key":"bibr2-0003702818819497","doi-asserted-by":"crossref","unstructured":"K. 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