{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,23]],"date-time":"2026-01-23T23:20:05Z","timestamp":1769210405621,"version":"3.49.0"},"reference-count":29,"publisher":"Wiley","license":[{"start":{"date-parts":[[2019,1,10]],"date-time":"2019-01-10T00:00:00Z","timestamp":1547078400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"crossref","award":["2017YFC1601605"],"award-info":[{"award-number":["2017YFC1601605"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Analytical Methods in Chemistry"],"published-print":{"date-parts":[[2019,1,10]]},"abstract":"<jats:p>A rapid and simple ultra-high-performance supercritical fluid chromatography (UHPSFC) with photodiode array (PDA) method was developed and validated for simultaneous determination of eight Sudan dyes in chili oil. In particular, a pair of isomer, Sudan red B and Sudan IV, was included in the analysis. After being diluted with dichloromethane, the analytes were separated on an Acquity UPC<jats:sup>2<\/jats:sup> HSS C18 SB column with gradient elution using CO<jats:sub>2<\/jats:sub> as the mobile phase and acetonitrile\/methanol (v\/v, 45\/55, containing 0.1% formic acid) as the organic modifier. Analytes were quantified by external calibration curves over ranges of 0.5\u201350\u2009mg\/L, with correlation coefficients above 0.999. The method gave recoveries of the target compounds (spiked at levels of 1, 5, and 25\u2009mg\/kg) ranging from 82.6 to 108.3%, with intraday and interday relative standard deviations of less than 8.0% and 8.6%, respectively. The limits of detection (LODs) and the limits of quantification (LOQs) for eight dyes were from 0.10 to 0.30\u2009mg\/kg and 0.30\u20131.00\u2009mg\/kg, respectively. This method was applied for the analysis of chili oil samples collected from the supermarket in Beijing. This validated that the UHPSFC-PDA method provides a useful strategy for the simultaneous determination of Sudan dyes in chili oil for routine analysis.<\/jats:p>","DOI":"10.1155\/2019\/3731028","type":"journal-article","created":{"date-parts":[[2019,1,10]],"date-time":"2019-01-10T23:31:22Z","timestamp":1547163082000},"page":"1-8","source":"Crossref","is-referenced-by-count":10,"title":["Fast Simultaneous Determination of Eight Sudan Dyes in Chili Oil by Ultra-High-Performance Supercritical Fluid Chromatography"],"prefix":"10.1155","volume":"2019","author":[{"given":"Yunjia","family":"Yang","sequence":"first","affiliation":[{"name":"Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Prevention and Control, Beijing 100013, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jing","family":"Zhang","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Diagnostic and Traceability 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