کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1739493 1521634 2007 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simultaneous measurement of 226Ra and 228Ra in natural water by liquid scintillation counting
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
Simultaneous measurement of 226Ra and 228Ra in natural water by liquid scintillation counting
چکیده انگلیسی

Several types of bottled drinking water originating from three different areas in Egypt are studied through measurement of radium activity, assessment of related annual dose for adults and finally to define the role of water quality on radium levels. The mean levels of 226Ra activity range from 0.44 to 0.92 Bq/L and the mean levels of 228Ra from 0.30 to 0.78 Bq/L, with related 226Ra/228Ra ratios ranging from 2.61 to 0.56. Water types originating from the Eastern Nile Delta area are characterized by low 226Ra levels and relatively high 228Ra activity, presumably due to the muddy agricultural nature of this area, which is subject to water from several surface resources for irrigation. In general, the mean activity levels for both 226Ra and 228Ra are within those in drinking water in several other countries and the annual ingested dose is comparable with the typical range reported by UNSCEAR. Also, the effect of TDS, pH, calcium, bicarbonate, sulphate and chloride ion concentrations on radium levels is studied and discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Radioactivity - Volume 95, Issues 2–3, June–July 2007, Pages 86–97
نویسندگان
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