کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7594817 1492119 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of sulphur in various vegetables by solid sampling high-resolution electrothermal molecular absorption spectrometry
ترجمه فارسی عنوان
تعیین گوگرد در سبزیجات مختلف با استفاده از روش نمونه گیری جامد طیف سنجی جذب مولکولی الکتروترمال با وضوح بالا
کلمات کلیدی
گوگرد، سبزیجات، نمونه برداری جامد، طیف سنج جذب اتمی الکتروترمال طیفی با رزولوشن بالا، طیف سنجی جذب مولکولی،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Sulphur was determined in various vegetables via molecular absorption of carbon monosulphide (CS) at 258.056 nm using a solid sampling high resolution continuum source electrothermal atomic absorption spectrometer (SS HR-CS ETAAS). Samples were dried, ground and directly introduced into the ruthenium coated graphite furnace as 0.05 to 0.50 mg. All determinations were performed using palladium + citric acid modifier and applying a pyrolysis temperature of 1000 °C and a volatilisation temperature of 2400 °C. The results were in good agreement with certified sulphur concentrations of various vegetal CRM samples applying linear calibration technique prepared from thioacetamide. The limit of detection and characteristic mass of the method were 7.5 and 8.7 ng of S, respectively. The concentrations of S in various spinach, leek, lettuce, radish, Brussels sprouts, zucchini and chard samples were determined. It was showed that distribution of sulphur in CRM and grinded food samples were homogeneous even in micro-scale.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 172, 1 April 2015, Pages 213-218
نویسندگان
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