کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7592541 1492113 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Homogeneity study of a corn flour laboratory reference material candidate for inorganic analysis
ترجمه فارسی عنوان
مطالعه یکنواختی کاندید مرجع آزمایشگاه ذرت آرد برای تجزیه و تحلیل غیر آلی
کلمات کلیدی
آرد ذرت، نامزد مرجع، مطالعه ی همگنی، تحلیل واریانس، تجزیه و تحلیل مولفه اصلی،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
In this work, a homogeneity study of a corn flour reference material candidate for inorganic analysis is presented. Seven kilograms of corn flour were used to prepare the material, which was distributed among 100 bottles. The elements Ca, K, Mg, P, Zn, Cu, Fe, Mn and Mo were quantified by inductively coupled plasma optical emission spectrometry (ICP OES) after acid digestion procedure. The method accuracy was confirmed by analyzing the rice flour certified reference material, NIST 1568a. All results were evaluated by analysis of variance (ANOVA) and principal component analysis (PCA). In the study, a sample mass of 400 mg was established as the minimum mass required for analysis, according to the PCA. The between-bottle test was performed by analyzing 9 bottles of the material. Subsamples of a single bottle were analyzed for the within-bottle test. No significant differences were observed for the results obtained through the application of both statistical methods. This fact demonstrates that the material is homogeneous for use as a laboratory reference material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 178, 1 July 2015, Pages 287-291
نویسندگان
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