Citation: Iman SAEIDI, Behruz BARFI, Moazameh PAYROVI, Javad FEIZY, Hojat A SHEIBANI, Mina MIRI, Farahnaz GHOLLASI MOUD. Polyamide as an efficient sorbent for simultaneous interference-free determination of three Sudan dyes in saffron and urine using high-performance liquid chromatography-ultra violet detection[J]. Chinese Journal of Chromatography, ;2015, 33(1): 29-34. doi: 10.3724/SP.J.1123.2014.08029 shu

Polyamide as an efficient sorbent for simultaneous interference-free determination of three Sudan dyes in saffron and urine using high-performance liquid chromatography-ultra violet detection

1.
1. Iranian National Standards Organization, Mashhad 91735-344, Iran;

Corresponding author: Iman SAEIDI,
Received Date: 27 August 2014
Available Online: 4 November 2014
Fund Project: The authors are grateful to the financial support of Institute of Standards and Industrial Research of Iran (Khorasan-e-RazaviProvince). (Khorasan-e-RazaviProvince)

With polyamide (PA) as an efficient sorbent for solid phase extraction (SPE) of Sudan dyes II, III and Red 7B from saffron and urine, their determination by HPLC was performed. The optimum conditions for SPE were achieved using 7 mL methanol/water (1: 9, v/v, pH 7) as the washing solvent and 3 mL tetrahydrofuran for elution. Good clean-up and high (above 90%) recoveries were observed for all the analytes. The optimized mobile phase composition for HPLC analysis of these compounds was methanol-water (70: 30, v/v). The SPE parameters, such as the maximum loading capacity and breakthrough volume, were also determined for each analyte. The limits of detection (LODs), limits of quantification (LOQs), linear ranges and recoveries for the analytes were 4.6-6.6 μg/L, 13.0-19.8 μg/L, 13.0-5000 μg/L (r² > 0.99) and 92.5%-113.4%, respectively. The precisions (RSDs) of the overall analytical procedure, estimated by five replicate measurements for Sudan II, III and Red 7B in saffron and urine samples were 2.3%, 1.8% and 3.6%, respectively. The developed method is simple and successful in the application to the determination of Sudan dyes in saffron and urine samples with HPLC coupled with UV detection.
- solid phase extraction (SPE),
- high-performance liquid chromatography (HPLC),
- Sudan dyes,
- saffron,
- urine,
- polyamide (PA)
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沈阳化工大学材料科学与工程学院沈阳 110142