Abstract
Sudan I was determined using a switchable-hydrophilicity solvent (SHS) followed by ultraviolet/visible spectrophotometric detection at 445.0 nm in a simple, fast, sensitive, and low-cost method. The optimum switchable-hydrophilicity solvent liquid-liquid microextraction (SHS-LLME) conditions were achieved with 600 µL of octylamine and 600 µL of 10.0 M sodium hydroxide in 20.0 mL of the sample. Limits of detection ranged from 0.009 to 0.021 µg mL−1. The coefficients of determination (R2) of the calibration graphs were higher than 0.9983 and relative standard deviations were below 8.6%. Enrichment factors ranged between 5.29 and 12.89. The proposed method was applied to spices with recoveries (%RR) between 92.5% and 104.4%.
Original language | English |
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Pages (from-to) | 202-212 |
Number of pages | 11 |
Journal | Analytical Letters |
Volume | 57 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2024 |
Keywords
- Microextraction
- spectrophotometry
- Sudan I dye
- switchable-hydrophilicity solvent
ASJC Scopus subject areas
- Analytical Chemistry
- Biochemistry
- Spectroscopy
- Clinical Biochemistry
- Biochemistry, medical
- Electrochemistry