کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7584690 | 1492029 | 2018 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Determination of toxic elements in yerba mate by ICP-MS after diluted acid digestion under O2 pressure
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this work, a procedure allowing effective digestion of a high mass of yerba mate (up to 1500â¯mg) using diluted HNO3, in a system pressurized with oxygen, is proposed. Digests were suitable for direct analysis by ICP-MS, virtually free of interferences. Digestion was performed using 7â¯molâ¯lâ1 HNO3 and 8â¯bar O2. The digestion efficiency was better than 92% and digests presented a relatively low acidity (<10â¯mmol HNO3). The limit of quantification was 4.0, 1.0 and 1.0â¯ngâ¯gâ1 for As, Cd and Pb, respectively. Under optimized conditions up to 1500â¯mg of sample were digested and no interferences were observed during analyses by ICP-MS, making this approach suitable for routine determination of As, Cd and Pb in yerba mate and also in agreement with the quality control requirements.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Food Chemistry - Volume 263, 15 October 2018, Pages 37-41
Journal: Food Chemistry - Volume 263, 15 October 2018, Pages 37-41
نویسندگان
Renan B. Pardinho, Paula Dalla Vecchia, Ana L.G. Mendes, Cezar A. Bizzi, Paola A. Mello, Fabio A. Duarte, Erico M.M. Flores,