{"id":"https://openalex.org/W2129149378","doi":"https://doi.org/10.1016/j.aca.2011.10.046","title":"Detection of singly- and doubly-charged quaternary ammonium drugs in equine urine by liquid chromatography/tandem mass spectrometry","display_name":"Detection of singly- and doubly-charged quaternary ammonium drugs in equine urine by liquid chromatography/tandem mass spectrometry","publication_year":2011,"publication_date":"2011-11-03","ids":{"openalex":"https://openalex.org/W2129149378","doi":"https://doi.org/10.1016/j.aca.2011.10.046","mag":"2129149378","pmid":"https://pubmed.ncbi.nlm.nih.gov/22123117"},"language":"en","primary_location":{"id":"doi:10.1016/j.aca.2011.10.046","doi":"https://doi.org/10.1016/j.aca.2011.10.046","is_oa":false,"landing_page_url":"https://doi.org/10.1016/j.aca.2011.10.046","pdf_url":null,"source":{"id":"https://openalex.org/S192559872","display_name":"Analytica Chimica Acta","issn_l":"0003-2670","issn":["0003-2670","1873-4324"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-a","jufo-2","ki-jl-1","medline","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Analytica Chimica Acta","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5017151087","display_name":"Emmie N. M. Ho","orcid":"https://orcid.org/0000-0001-8366-2066","observed_orcids":["https://orcid.org/0000-0001-8366-2066"]},"institutions":[{"id":"https://openalex.org/I4210100650","display_name":"Hong Kong Jockey Club","ror":"https://ror.org/015ygrv52","country_code":"HK","type":"nonprofit","lineage":["https://openalex.org/I4210100650"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Emmie N.M. Ho","raw_affiliation_strings":["Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, NT, Hong Kong, China. emmie.nm.ho@hkjc.org.hk","Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N.T., Hong Kong, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, NT, Hong Kong, China. emmie.nm.ho@hkjc.org.hk","institution_ids":["https://openalex.org/I4210100650"]},{"raw_affiliation_string":"Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N.T., Hong Kong, China","institution_ids":["https://openalex.org/I4210100650"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5080387734","display_name":"Wai-Him Kwok","orcid":"https://orcid.org/0000-0001-5239-7079","observed_orcids":["https://orcid.org/0000-0001-5239-7079"]},"institutions":[{"id":"https://openalex.org/I4210100650","display_name":"Hong Kong Jockey Club","ror":"https://ror.org/015ygrv52","country_code":"HK","type":"nonprofit","lineage":["https://openalex.org/I4210100650"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"W.H. Kwok","raw_affiliation_strings":["Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N.T., Hong Kong, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N.T., Hong Kong, China","institution_ids":["https://openalex.org/I4210100650"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5077238522","display_name":"April S. Y. Wong","orcid":"https://orcid.org/0000-0001-7990-2207","observed_orcids":["https://orcid.org/0000-0001-7990-2207"]},"institutions":[{"id":"https://openalex.org/I4210100650","display_name":"Hong Kong Jockey Club","ror":"https://ror.org/015ygrv52","country_code":"HK","type":"nonprofit","lineage":["https://openalex.org/I4210100650"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"April S.Y. Wong","raw_affiliation_strings":["Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N.T., Hong Kong, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N.T., Hong Kong, China","institution_ids":["https://openalex.org/I4210100650"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5057417459","display_name":"Terence S. M. Wan","orcid":"https://orcid.org/0000-0003-3779-2649","observed_orcids":["https://orcid.org/0000-0003-3779-2649"]},"institutions":[{"id":"https://openalex.org/I4210100650","display_name":"Hong Kong Jockey Club","ror":"https://ror.org/015ygrv52","country_code":"HK","type":"nonprofit","lineage":["https://openalex.org/I4210100650"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Terence S.M. Wan","raw_affiliation_strings":["Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N.T., Hong Kong, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Racing Laboratory, The Hong Kong Jockey Club, Sha Tin Racecourse, Sha Tin, N.T., Hong Kong, China","institution_ids":["https://openalex.org/I4210100650"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I4210100650"],"apc_list":{"value":4270,"currency":"USD","value_usd":4270},"apc_paid":null,"fwci":1.0347,"has_fulltext":false,"cited_by_count":22,"citation_normalized_percentile":{"value":0.77603743,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":98},"biblio":{"volume":"710","issue":null,"first_page":"94","last_page":"101"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10800","display_name":"Forensic Toxicology and Drug Analysis","score":0.34060001373291016,"subfield":{"id":"https://openalex.org/subfields/3005","display_name":"Toxicology"},"field":{"id":"https://openalex.org/fields/30","display_name":"Pharmacology, Toxicology and Pharmaceutics"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T10800","display_name":"Forensic Toxicology and Drug Analysis","score":0.34060001373291016,"subfield":{"id":"https://openalex.org/subfields/3005","display_name":"Toxicology"},"field":{"id":"https://openalex.org/fields/30","display_name":"Pharmacology, Toxicology and Pharmaceutics"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T12700","display_name":"Doping in Sports","score":0.2827000021934509,"subfield":{"id":"https://openalex.org/subfields/3312","display_name":"Sociology and Political Science"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T13338","display_name":"Pharmacological Effects and Assays","score":0.17020000517368317,"subfield":{"id":"https://openalex.org/subfields/1103","display_name":"Animal Science and Zoology"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/anticholinergic-drugs","display_name":"anticholinergic agents","score":0.8349999785423279},{"id":"https://openalex.org/keywords/equine-urine","display_name":"equine urine","score":0.9179999828338623},{"id":"https://openalex.org/keywords/drug-of-abuse-detection","display_name":"drug abuse detection","score":0.5360000133514404},{"id":"https://openalex.org/keywords/solid-phase-extraction","display_name":"solid-phase extraction","score":0.871999979019165},{"id":"https://openalex.org/keywords/multiple-reaction-monitoring","display_name":"multiple reaction monitoring","score":0.8190000057220459},{"id":"https://openalex.org/keywords/polar-analytes","display_name":"polar analytes","score":0.492000013589859},{"id":"https://openalex.org/keywords/veterinary-drug-residues","display_name":"veterinary drug residues","score":0.4620000123977661}],"concepts":[{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.9424036741256714},{"id":"https://openalex.org/C2775986502","wikidata":"https://www.wikidata.org/wiki/Q420466","display_name":"Ammonium formate","level":3,"score":0.8500837683677673},{"id":"https://openalex.org/C43617362","wikidata":"https://www.wikidata.org/wiki/Q170050","display_name":"Chromatography","level":1,"score":0.8294259309768677},{"id":"https://openalex.org/C81426234","wikidata":"https://www.wikidata.org/wiki/Q1408763","display_name":"Solid phase extraction","level":3,"score":0.7285450100898743},{"id":"https://openalex.org/C31827203","wikidata":"https://www.wikidata.org/wiki/Q874296","display_name":"Tandem mass spectrometry","level":3,"score":0.5791903138160706},{"id":"https://openalex.org/C162356407","wikidata":"https://www.wikidata.org/wiki/Q180809","display_name":"Mass spectrometry","level":2,"score":0.5492994785308838},{"id":"https://openalex.org/C4725764","wikidata":"https://www.wikidata.org/wiki/Q844704","display_name":"Extraction (chemistry)","level":2,"score":0.5351809859275818},{"id":"https://openalex.org/C2780026642","wikidata":"https://www.wikidata.org/wiki/Q40924","display_name":"Urine","level":2,"score":0.5128931999206543},{"id":"https://openalex.org/C119128265","wikidata":"https://www.wikidata.org/wiki/Q900165","display_name":"Detection limit","level":2,"score":0.5091122984886169},{"id":"https://openalex.org/C64489805","wikidata":"https://www.wikidata.org/wiki/Q873864","display_name":"Liquid chromatography\u2013mass spectrometry","level":3,"score":0.48702365159988403},{"id":"https://openalex.org/C175467004","wikidata":"https://www.wikidata.org/wiki/Q17088083","display_name":"Ion suppression in liquid chromatography\u2013mass spectrometry","level":4,"score":0.48293063044548035},{"id":"https://openalex.org/C71043704","wikidata":"https://www.wikidata.org/wiki/Q17144692","display_name":"Selected reaction monitoring","level":4,"score":0.47067365050315857},{"id":"https://openalex.org/C2779870022","wikidata":"https://www.wikidata.org/wiki/Q190901","display_name":"Ammonium","level":2,"score":0.46156802773475647},{"id":"https://openalex.org/C2777463227","wikidata":"https://www.wikidata.org/wiki/Q408047","display_name":"Acetonitrile","level":2,"score":0.4402022957801819},{"id":"https://openalex.org/C40684141","wikidata":"https://www.wikidata.org/wiki/Q902061","display_name":"Electrospray ionization","level":3,"score":0.43229368329048157},{"id":"https://openalex.org/C194451485","wikidata":"https://www.wikidata.org/wiki/Q1327575","display_name":"Electrospray","level":3,"score":0.4189074635505676},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D000644","descriptor_name":"Quaternary Ammonium Compounds","qualifier_ui":"Q000302","qualifier_name":"isolation & purification","is_major_topic":false},{"descriptor_ui":"D000644","descriptor_name":"Quaternary Ammonium Compounds","qualifier_ui":"Q000652","qualifier_name":"urine","is_major_topic":false},{"descriptor_ui":"D000818","descriptor_name":"Animals","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D002851","descriptor_name":"Chromatography, High Pressure Liquid","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D004300","descriptor_name":"Doping in Sports","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D004364","descriptor_name":"Pharmaceutical Preparations","qualifier_ui":"Q000302","qualifier_name":"isolation & purification","is_major_topic":false},{"descriptor_ui":"D004364","descriptor_name":"Pharmaceutical Preparations","qualifier_ui":"Q000652","qualifier_name":"urine","is_major_topic":true},{"descriptor_ui":"D006736","descriptor_name":"Horses","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D018680","descriptor_name":"Cholinergic Antagonists","qualifier_ui":"Q000302","qualifier_name":"isolation & purification","is_major_topic":false},{"descriptor_ui":"D018680","descriptor_name":"Cholinergic Antagonists","qualifier_ui":"Q000652","qualifier_name":"urine","is_major_topic":false},{"descriptor_ui":"D052616","descriptor_name":"Solid Phase Extraction","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D053719","descriptor_name":"Tandem Mass Spectrometry","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true}],"locations_count":2,"locations":[{"id":"doi:10.1016/j.aca.2011.10.046","doi":"https://doi.org/10.1016/j.aca.2011.10.046","is_oa":false,"landing_page_url":"https://doi.org/10.1016/j.aca.2011.10.046","pdf_url":null,"source":{"id":"https://openalex.org/S192559872","display_name":"Analytica Chimica Acta","issn_l":"0003-2670","issn":["0003-2670","1873-4324"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-a","jufo-2","ki-jl-1","medline","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Analytica Chimica Acta","raw_type":"journal-article"},{"id":"pmid:22123117","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/22123117","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Analytica chimica acta","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320309432","display_name":"F. Hoffmann-La Roche","ror":"https://ror.org/00by1q217"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W1997542010","https://openalex.org/W2025818559","https://openalex.org/W2041163371","https://openalex.org/W2044444395","https://openalex.org/W2052401476","https://openalex.org/W2053770405","https://openalex.org/W2098859710","https://openalex.org/W2141143408","https://openalex.org/W2148031040","https://openalex.org/W4242359054"],"related_works":["https://openalex.org/W2025818559","https://openalex.org/W2041163371","https://openalex.org/W1965221481","https://openalex.org/W2093514685","https://openalex.org/W4385619856","https://openalex.org/W2094247370","https://openalex.org/W7046615818","https://openalex.org/W2313908060","https://openalex.org/W4400220083","https://openalex.org/W253317893"],"abstract_inverted_index":null,"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":2},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":3},{"year":2019,"cited_by_count":4},{"year":2018,"cited_by_count":2},{"year":2016,"cited_by_count":4},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2016-06-24T00:00:00"}
