کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1246130 | 969746 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Development of an MSFIA-MPFS pre-treatment method for radium determination in water samples
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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
A new automatic method for preconcentration and separation of radium in water samples has been developed. Such method combines both multisyringe (MSFIA) and multi-pumping (MPFS) flow analysis techniques allowing to analyze larger sample volumes with a higher throughput than other previous methodologies. Ra adsorbed on MnO2, deposited on cotton fiber, is eluted with hydroxylamine and subsequently coprecipitated with BaSO4. 226Ra activity is determined off-line by using a low background proportional counter. The procedure yield is (90 ± 3)% and its lower limit of detection 0.05 Bq L−1. This method has been applied satisfactorily to different types of spiked water (tap, mineral and seawater).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 71, Issue 3, 28 February 2007, Pages 1172–1179
Journal: Talanta - Volume 71, Issue 3, 28 February 2007, Pages 1172–1179
نویسندگان
Y. Fajardo, E. Gómez, F. Garcias, V. Cerdà, M. Casas,