Simultaneous determination of nitrate, nitrite and bromate by capillary zone electrophoresis in tea infusions grown in the Black Sea region of Turkey
SEPARATION SCIENCE PLUS, cilt.4, sa.1, ss.45-53, 2021 (ESCI, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 4 Sayı: 1
- Basım Tarihi: 2021
- Doi Numarası: 10.1002/sscp.202000074
- Dergi Adı: SEPARATION SCIENCE PLUS
- Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus
- Sayfa Sayıları: ss.45-53
- Anahtar Kelimeler: bromate, capillary zone electrophoresis, nitrate, nitrite, tea infusions, HERBAL TEA, WATER, VEGETABLES, SEPARATION, BROMIDE, SAMPLES, ANIONS, IODIDE
- Ondokuz Mayıs Üniversitesi Adresli: Evet
Özet
A quick method for the simultaneous determination of nitrate, nitrite and bromate ions in tea infusions using capillary zone electrophoresis was developed. A three-factor full factorial design was applied for the determination of optimal conditions. Prior to the full factorial analysis, a number of experiments were conducted. A 50 mM phosphate buffer solution with pH 3.5 was selected. A capillary temperature of 40 degrees C, -20 kV applied voltage, 61.5 cm total capillary length (53.5 cm effective length) with 50 mu m i.d., and 50 mbar injection pressure for 30 s were used. The limits of detection for nitrate, nitrite, and bromate were 0.60, 0.99, and 2.14 mg/L, respectively. The anions could be detected by the method with good resolution within 7 min with average spike recovery ranging between 91.6 and 105.5% (n = 3).