تفاصيل الوثيقة
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نوع الوثيقة |
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مقال في مجلة دورية |
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عنوان الوثيقة |
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النشاط الإشعاعي الطبيعي وانبعاثات الرادون في الأسمدة الفوسفاتية Natural Radioactivity and Radon Exhalation in Phosphate Fertilizers |
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الموضوع |
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علوم البيئة |
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لغة الوثيقة |
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الانجليزية |
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المستخلص |
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238U, 232Th, 226Ra,222 Rn and 40K activity concentrations in fertilizer samples collected from a
local market were determined. Radon activity concentrations ranged from 0.04–252 Bq kg−1 and were comparablewith
lowactivity concentrations ranges reported previously. Radon exhalation rates and effective 226Ra
concentration were determined using CR-39 solid-state nuclear track detectors. Effective 226Ra concentrations
ranged from 4.27–33.93 Bq kg−1. Two different 222Rn exhalation rates were determined; area dependent exhalation
rates (0.044–0.351 Bq m−2 h−1) and mass dependent exhalation rates (0.023–0.180) Bq kg−1 h−1).
Even without secular equilibrium, strong correlations were generally apparent among uranium concentrations,
effective 226Ra concentrations and 222Rn exhalation rates in samples with high concentrations of uranium.
232Th and 40K concentrations ranged from 0–44.6 and 0.08–127 μg/g, respectively. |
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ردمد |
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1319-8025 |
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اسم الدورية |
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Arabian Journal for Science and Engineering |
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المجلد |
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37 |
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العدد |
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1 |
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سنة النشر |
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1433 هـ
2012 م |
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نوع المقالة |
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مقالة علمية |
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تاريخ الاضافة على الموقع |
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Sunday, September 16, 2012 |
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الباحثون
| محمد كادي | Kadi, Mohammad W. | باحث | | mkadi@kau.edu.sa |
| ذياب العرياني | Al-Eryani, Dheyab A. | باحث | | |
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الرجوع إلى صفحة الأبحاث
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