{"id":"https://openalex.org/W7204804379","doi":"https://doi.org/10.46717/igj.2026.59.2b.4","title":"Evaluation the Asphaltene Content in Various Types of Iraqi Crude Oil Using Fluorescence Spectroscopy","display_name":"Evaluation the Asphaltene Content in Various Types of Iraqi Crude Oil Using Fluorescence Spectroscopy","publication_year":2026,"publication_date":"2026-08-31","ids":{"openalex":"https://openalex.org/W7204804379","doi":"https://doi.org/10.46717/igj.2026.59.2b.4"},"language":"en","primary_location":{"id":"doi:10.46717/igj.2026.59.2b.4","doi":"https://doi.org/10.46717/igj.2026.59.2b.4","is_oa":true,"landing_page_url":"https://doi.org/10.46717/igj.2026.59.2b.4","pdf_url":"https://igj-iraq.org/igj/index.php/igj/article/download/3291/2502","source":{"id":"https://openalex.org/S4210204089","display_name":"Iraqi Geological Journal","issn_l":"2414-6064","issn":["2414-6064","2663-8754"],"is_oa":true,"is_in_doaj":true,"is_core":false,"listed_in":["doaj","jufo-1","norway-1","poland-20","russia-white-list-3"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by-nc","license_id":"https://openalex.org/licenses/cc-by-nc","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Iraqi Geological Journal","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://igj-iraq.org/igj/index.php/igj/article/download/3291/2502","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5148787088","display_name":"Sajida A. Hussain","orcid":"https://orcid.org/0009-0006-1479-5336","observed_orcids":["https://orcid.org/0009-0006-1479-5336"]},"institutions":[{"id":"https://openalex.org/I4405260009","display_name":"Scientific Research Commission","ror":"https://ror.org/032g3x293","country_code":"IQ","type":"government","lineage":["https://openalex.org/I4210128557","https://openalex.org/I4405260009"]}],"countries":["IQ"],"is_corresponding":false,"raw_author_name":"Sajida A. Hussain","raw_affiliation_strings":["Scientific Research Commission, Baghdad, Iraq"],"raw_orcid":"https://orcid.org/0009-0006-1479-5336","affiliations":[{"raw_affiliation_string":"Scientific Research Commission, Baghdad, Iraq","institution_ids":["https://openalex.org/I4405260009"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5087840010","display_name":"Rana Adnan Kamal Aldeen","orcid":"https://orcid.org/0000-0002-4397-4003","observed_orcids":["https://orcid.org/0000-0002-4397-4003"]},"institutions":[{"id":"https://openalex.org/I4405260009","display_name":"Scientific Research Commission","ror":"https://ror.org/032g3x293","country_code":"IQ","type":"government","lineage":["https://openalex.org/I4210128557","https://openalex.org/I4405260009"]}],"countries":["IQ"],"is_corresponding":false,"raw_author_name":"Rana Adnan Kamal Aldeen","raw_affiliation_strings":["Scientific Research Commission, Baghdad, Iraq"],"raw_orcid":"https://orcid.org/0000-0002-4397-4003","affiliations":[{"raw_affiliation_string":"Scientific Research Commission, Baghdad, Iraq","institution_ids":["https://openalex.org/I4405260009"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5148784549","display_name":"Rana A. Abdulkareem","orcid":"https://orcid.org/0009-0001-2262-9622","observed_orcids":["https://orcid.org/0009-0001-2262-9622"]},"institutions":[{"id":"https://openalex.org/I4405260009","display_name":"Scientific Research Commission","ror":"https://ror.org/032g3x293","country_code":"IQ","type":"government","lineage":["https://openalex.org/I4210128557","https://openalex.org/I4405260009"]}],"countries":["IQ"],"is_corresponding":false,"raw_author_name":"Rana A. Abdulkareem","raw_affiliation_strings":["Scientific Research Commission, Baghdad, Iraq"],"raw_orcid":"https://orcid.org/0009-0001-2262-9622","affiliations":[{"raw_affiliation_string":"Scientific Research Commission, Baghdad, Iraq","institution_ids":["https://openalex.org/I4405260009"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5092260126","display_name":"Dalia S. Makki","orcid":"https://orcid.org/0009-0004-0780-6346","observed_orcids":["https://orcid.org/0009-0004-0780-6346"]},"institutions":[{"id":"https://openalex.org/I4405260009","display_name":"Scientific Research Commission","ror":"https://ror.org/032g3x293","country_code":"IQ","type":"government","lineage":["https://openalex.org/I4210128557","https://openalex.org/I4405260009"]}],"countries":["IQ"],"is_corresponding":false,"raw_author_name":"Dalia S. Makki","raw_affiliation_strings":["Scientific Research Commission, Baghdad, Iraq"],"raw_orcid":"https://orcid.org/0009-0004-0780-6346","affiliations":[{"raw_affiliation_string":"Scientific Research Commission, Baghdad, Iraq","institution_ids":["https://openalex.org/I4405260009"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5148828263","display_name":"Nagham A. Gafil","orcid":"https://orcid.org/0009-0003-6097-6953","observed_orcids":["https://orcid.org/0009-0003-6097-6953"]},"institutions":[{"id":"https://openalex.org/I4405260009","display_name":"Scientific Research Commission","ror":"https://ror.org/032g3x293","country_code":"IQ","type":"government","lineage":["https://openalex.org/I4210128557","https://openalex.org/I4405260009"]}],"countries":["IQ"],"is_corresponding":false,"raw_author_name":"Nagham A. Gafil","raw_affiliation_strings":["Scientific Research Commission, Baghdad, Iraq"],"raw_orcid":"https://orcid.org/0009-0003-6097-6953","affiliations":[{"raw_affiliation_string":"Scientific Research Commission, Baghdad, Iraq","institution_ids":["https://openalex.org/I4405260009"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5148829725","display_name":"Sabah F. Shakii","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4405260009","display_name":"Scientific Research Commission","ror":"https://ror.org/032g3x293","country_code":"IQ","type":"government","lineage":["https://openalex.org/I4210128557","https://openalex.org/I4405260009"]}],"countries":["IQ"],"is_corresponding":false,"raw_author_name":"Sabah F. Shakii","raw_affiliation_strings":["Scientific Research Commission, Baghdad, Iraq"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Scientific Research Commission, Baghdad, Iraq","institution_ids":["https://openalex.org/I4405260009"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I4405260009"],"apc_list":{"value":175,"currency":"USD","value_usd":175},"apc_paid":{"value":175,"currency":"USD","value_usd":175},"fwci":0.0,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"56","last_page":"66"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11630","display_name":"Petroleum Processing and Analysis","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1602","display_name":"Analytical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11630","display_name":"Petroleum Processing and Analysis","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1602","display_name":"Analytical Chemistry"},"field":{"id":"https://openalex.org/fields/16","display_name":"Chemistry"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10264","display_name":"Asphalt Pavement Performance Evaluation","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11557","display_name":"Lubricants and Their Additives","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2210","display_name":"Mechanical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/asphaltene-content","display_name":"asphaltene content","score":0.9819999933242798},{"id":"https://openalex.org/keywords/crude-oil","display_name":"crude oil","score":0.7789999842643738},{"id":"https://openalex.org/keywords/fluorescence-spectroscopy","display_name":"fluorescence spectroscopy","score":0.8790000081062317},{"id":"https://openalex.org/keywords/viscosity","display_name":"viscosity","score":0.7670000195503235},{"id":"https://openalex.org/keywords/relative-density","display_name":"relative density","score":0.9990000128746033},{"id":"https://openalex.org/keywords/iraqi-crude-oil","display_name":"Iraqi crude oil","score":0.843999981880188},{"id":"https://openalex.org/keywords/oil-composition","display_name":"oil composition","score":0.6449999809265137}],"concepts":[{"id":"https://openalex.org/C65324659","wikidata":"https://www.wikidata.org/wiki/Q255712","display_name":"Asphaltene","level":2,"score":0.9790999889373779},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.7427999973297119},{"id":"https://openalex.org/C43785746","wikidata":"https://www.wikidata.org/wiki/Q29246","display_name":"API gravity","level":3,"score":0.7128999829292297},{"id":"https://openalex.org/C149629883","wikidata":"https://www.wikidata.org/wiki/Q660926","display_name":"Fraction (chemistry)","level":2,"score":0.6898999810218811},{"id":"https://openalex.org/C2987168347","wikidata":"https://www.wikidata.org/wiki/Q22656","display_name":"Crude oil","level":2,"score":0.6534000039100647},{"id":"https://openalex.org/C43617362","wikidata":"https://www.wikidata.org/wiki/Q170050","display_name":"Chromatography","level":1,"score":0.6216999888420105},{"id":"https://openalex.org/C91881484","wikidata":"https://www.wikidata.org/wiki/Q191807","display_name":"Fluorescence","level":2,"score":0.6079000234603882},{"id":"https://openalex.org/C158711907","wikidata":"https://www.wikidata.org/wiki/Q1768467","display_name":"Fluorescence spectroscopy","level":3,"score":0.597000002861023},{"id":"https://openalex.org/C113196181","wikidata":"https://www.wikidata.org/wiki/Q485223","display_name":"Analytical Chemistry (journal)","level":2,"score":0.5206999778747559},{"id":"https://openalex.org/C127172972","wikidata":"https://www.wikidata.org/wiki/Q128709","display_name":"Viscosity","level":2,"score":0.49050000309944153},{"id":"https://openalex.org/C548895740","wikidata":"https://www.wikidata.org/wiki/Q22656","display_name":"Petroleum","level":2,"score":0.48820000886917114},{"id":"https://openalex.org/C28292411","wikidata":"https://www.wikidata.org/wiki/Q1047462","display_name":"Light crude oil","level":2,"score":0.4390999972820282},{"id":"https://openalex.org/C2777207669","wikidata":"https://www.wikidata.org/wiki/Q43648","display_name":"Hydrocarbon","level":2,"score":0.391400009393692},{"id":"https://openalex.org/C2994048982","wikidata":"https://www.wikidata.org/wiki/Q1768467","display_name":"Fluorescence spectrometry","level":3,"score":0.38999998569488525},{"id":"https://openalex.org/C32891209","wikidata":"https://www.wikidata.org/wiki/Q483666","display_name":"Spectroscopy","level":2,"score":0.34130001068115234},{"id":"https://openalex.org/C2993001476","wikidata":"https://www.wikidata.org/wiki/Q13553575","display_name":"Excitation wavelength","level":3,"score":0.31200000643730164},{"id":"https://openalex.org/C116628846","wikidata":"https://www.wikidata.org/wiki/Q899138","display_name":"Mass fraction","level":2,"score":0.2703999876976013}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.46717/igj.2026.59.2b.4","doi":"https://doi.org/10.46717/igj.2026.59.2b.4","is_oa":true,"landing_page_url":"https://doi.org/10.46717/igj.2026.59.2b.4","pdf_url":"https://igj-iraq.org/igj/index.php/igj/article/download/3291/2502","source":{"id":"https://openalex.org/S4210204089","display_name":"Iraqi Geological Journal","issn_l":"2414-6064","issn":["2414-6064","2663-8754"],"is_oa":true,"is_in_doaj":true,"is_core":false,"listed_in":["doaj","jufo-1","norway-1","poland-20","russia-white-list-3"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by-nc","license_id":"https://openalex.org/licenses/cc-by-nc","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Iraqi Geological Journal","raw_type":"journal-article"}],"best_oa_location":{"id":"doi:10.46717/igj.2026.59.2b.4","doi":"https://doi.org/10.46717/igj.2026.59.2b.4","is_oa":true,"landing_page_url":"https://doi.org/10.46717/igj.2026.59.2b.4","pdf_url":"https://igj-iraq.org/igj/index.php/igj/article/download/3291/2502","source":{"id":"https://openalex.org/S4210204089","display_name":"Iraqi Geological Journal","issn_l":"2414-6064","issn":["2414-6064","2663-8754"],"is_oa":true,"is_in_doaj":true,"is_core":false,"listed_in":["doaj","jufo-1","norway-1","poland-20","russia-white-list-3"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by-nc","license_id":"https://openalex.org/licenses/cc-by-nc","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"The Iraqi Geological Journal","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7204804379.pdf","grobid_xml":"https://content.openalex.org/works/W7204804379.grobid-xml"},"referenced_works_count":28,"referenced_works":["https://openalex.org/W1492478613","https://openalex.org/W2749107829","https://openalex.org/W2766127160","https://openalex.org/W2803029221","https://openalex.org/W2908131645","https://openalex.org/W2953072619","https://openalex.org/W2966472253","https://openalex.org/W2967325837","https://openalex.org/W2995572403","https://openalex.org/W3007613945","https://openalex.org/W3012645302","https://openalex.org/W3018541253","https://openalex.org/W3108547947","https://openalex.org/W3109811515","https://openalex.org/W4200007113","https://openalex.org/W4210258248","https://openalex.org/W4210908834","https://openalex.org/W4220960648","https://openalex.org/W4289544786","https://openalex.org/W4293364418","https://openalex.org/W4321019390","https://openalex.org/W4381987906","https://openalex.org/W4391986743","https://openalex.org/W4392373955","https://openalex.org/W4393294881","https://openalex.org/W4403391535","https://openalex.org/W4405058530","https://openalex.org/W4408977242"],"related_works":["https://openalex.org/W7207590146","https://openalex.org/W2334582627","https://openalex.org/W2803055395","https://openalex.org/W584602247","https://openalex.org/W2070156463","https://openalex.org/W1978191489","https://openalex.org/W2910550893","https://openalex.org/W2039053968","https://openalex.org/W2381968056","https://openalex.org/W2141761140"],"abstract_inverted_index":{"The":[0,29,74,105,131,158],"effect":[1],"of":[2,11,48,62,77,107,163,170,177,186],"asphaltene":[3,36,75,109,156,164],"fractions":[4,37,165],"on":[5,166],"the":[6,41,66,78,108,161,167,175],"physical":[7,168],"and":[8,19,26,40,52,70,90,100,118,123,139,173],"optical":[9],"properties":[10],"four":[12],"Iraqi":[13],"crude":[14,30,68,141,145,171],"oils":[15,44,69],"(Basrah,":[16],"Al-Ahdab,":[17],"Kirkuk":[18,99,140],"Khanna)":[20],"was":[21,80],"evaluated":[22],"using":[23,38,58],"a":[24,113,124,181],"simple":[25],"sensitive":[27],"procedure.":[28],"oil":[31,146,172],"samples":[32,79],"were":[33,45,56,133],"separated":[34],"into":[35],"n-pentane":[39],"corresponding":[42],"de-asphaltened":[43,72],"analyzed.":[46],"Cross-plots":[47],"viscosity,":[49],"specific":[50,119],"gravity":[51,120],"fluorescence":[53,128,178],"emission":[54,129],"intensity":[55],"generated":[57],"an":[59],"excitation":[60],"wavelength":[61],"350":[63],"nm":[64],"for":[65,184],"original":[67],"their":[71],"fractions.":[73],"content":[76],"quite":[81],"different,":[82],"ranging":[83],"from":[84],"22":[85],"wt%":[86,92,97,102],"in":[87,93,98,103,112,127,136,189],"Al-":[88],"Ahdab":[89],"20":[91],"Basrah":[94],"to":[95,152],"15":[96],"8":[101],"Khanna.":[104],"removal":[106],"fraction":[110],"resulted":[111],"significant":[114,135],"viscosity":[115],"decrease":[116],"(25\u201330%)":[117],"(0.02\u20130.04":[121],"units)":[122],"distinct":[125],"increase":[126],"intensity.":[130],"effects":[132],"more":[134],"Basrah,":[137],"Al-Ahdab":[138],"oils,":[142],"whereas":[143],"Khanna":[144],"exhibited":[147],"only":[148],"slight":[149],"changes":[150],"due":[151],"its":[153],"relatively":[154],"low":[155],"content.":[157],"results":[159],"reveal":[160],"influence":[162],"behavior":[169],"demonstrate":[174],"usefulness":[176],"spectroscopy":[179],"as":[180],"rapid":[182],"technique":[183],"detection":[185],"compositional":[187],"variations":[188],"petroleum":[190],"systems.":[191]},"counts_by_year":[],"updated_date":"2026-11-13T13:42:25.865203","created_date":"2026-09-01T00:00:00"}