دانلود A cloud point extraction approach using Triton X-100 for the separation and preconcentration of Sudan dyes in chilli powder

A CPE-HPLC (UV) method was developed for the determination of Sudan (I–IV) dyes
قیمت : 240,000 ریال
شناسه محصول : 2009591
نویسنده/ناشر/نام مجله : Analytica Chimica Acta
سال انتشار: 2007
تعداد صفحات انگليسي : 5
نوع فایل های ضمیمه : Pdf+Word
حجم فایل : 442 Kb
کلمه عبور همه فایلها : www.daneshgahi.com
عنوان انگليسي : A cloud point extraction approach using Triton X-100 for the separation and preconcentration of Sudan dyes in chilli powder

چکیده

Abstract

A CPE-HPLC (UV) method was developed for the determination of Sudan (I–IV) dyes, non-ionic surfactant Triton X-100 was used to extract and preconcentrate Sudan dyes from chilli powder prior to their determination by HPLC-UV. The separation and determination of Sudan dyes was then carried out in the HPLC-UV system with isocratic elution, and the detector was set at 500 nm. The parameters and variables that affect the extraction were investigated. Under optimum conditions: 3% of Triton X-100 (W/V), 10% of Na2CO3 (W/V), heat-assisted at 70 °C for 30 min. Recoveries of the Sudan dyes ranged from 80.70% to 85.45% in chilli powder by CPE method, with all the relative standard deviations of less than 3%. Limit of detection (LOD) and limit of quantification (LOQ) were in the range of 2.0–4.0 and 7.0–12.0 μg kg−1 in chilli powder, respectively.

 

Keywords: Cloud point extraction Sudan dyes High performance liquid chromatography Chilli powder
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