مشخصات پژوهش

صفحه نخست /Deep eutectic solvent-based ...
عنوان
Deep eutectic solvent-based ligandless ultrasound-assisted liquid-phase microextraction for extraction of cobalt ions from food samples prior to spectrophotometric determination
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Deep eutectic solvent · Liquid-phase microextraction · Ultrasound assisted · Ligandless · Cobalt
چکیده
An innovative environmentally friendly deep eutectic solvent-based ligandless ultrasound-assisted liquid-phase microextraction was introduced for spectrophotometric determination of trace amount of cobalt. n-phenyliminodiacetic acid: choline chloride (2:1 mol ratio) as a novel DES was prepared for extraction of cobalt ions which is both as chelating agent and extraction solvent. The pivotal factors affecting the proposed method including pH, time, temperature, extraction solvent volume, ionic strength, and sample volume were investigated. At optimum conditions, limit of detection and limit of quantification of 5.23 μg L−1 and 17.67 μg L−1 were achieved respectively. The linear range of 20–200 μg L−1 and precision (relative standard deviation %) of 3.4 for 100 μg L−1 Co+ 2 solution were gained. The proposed method was successfully applied in water samples, tomato sauce, black and green tea, and dark chocolate with high recovery values (%) of 94–105.
پژوهشگران اکرم ترابی (نفر اول)، محبوبه شیرانی (نفر دوم)، ابوالفضل سمنانی (نفر سوم)، علی اکبری (نفر چهارم)