Assessment of radiological impact of phosphate fertilization on arable land
المؤلفون المشاركون
Muhammad, Sayf al-Din Yasin
Sam, Adam Khatir
المصدر
Sudan Journal of Basic Sciences. |n Series : Chemistry
العدد
المجلد 3، العدد 7 (31 مارس/آذار 2005)، ص ص. 133-152، 20ص.
الناشر
معهد السودان للعلوم الطبيعية وحدة التأليف و النشر
تاريخ النشر
2005-03-31
دولة النشر
السودان
عدد الصفحات
20
التخصصات الرئيسية
الموضوعات
الملخص EN
In an attempt to assess the radiological impact of phosphate fertilization on natural radioactivity of arable land, a sizable number of farm soils fertilized with different rates of fertilization were collected from agricultural projects which supply Khartoum State with vegetables (Umdoam, Aselait and Genaid) as well as unfertilized soils from areas adjacent to the Nile.
The activity concentration of 226Ra, 232Th and 40 K in these agricultural soils has been measured using a high- resolution gamma spectrometry equippe.
With HPGe detector with relative efficiency 50 %.
Over all, the activity concentrations encountered in both fertilized and unfertilized farm soils are characteristic of normal background radiation areas.
Upon comparing the activity levels met in fertilized soils categorically location-wise, the intensity of fertilization was evident as Umdoam soils which are fertilized at a rate of 200 kg / feddan displayed higher values relative to those from Aselait and Genaid where the rate of fertilization amounts to 25 and 75 kg / feddan, respectively.
However, upon comparing the activity levels found in fertilized soils and unfertilized soils collected from and prone to annual flood, it was apparent that unfertilized soils which were rich in silt exhibit higher activity concentrations for 26Ra, 232Th and 40 K.
This led us to conclude that the impact of fertilization rate on enhancing soil radioactivity is negligible for the time being, however, on the long term it will have impact through accumulation of radionuclides contained in phosphate fertilizer.
The corresponding absorbed radiation dose in air 1 m height above the ground level as estimated from the activity concentrations of 22eRa 232Th and 40 K using DRCF's ranged from 39 ± 8 to 46 ± 6 nGy / h f0r fertilized soils and from 46 ± 10 to 63 ± 11 nGy / h for unfertilized soils, These values fall within world-wide range for normal background areas.
The major contribution to the exposure came from 40 i {followed by 226Ra.
They were converted to annual effective dose taking into account the environmental occupancy factor.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Muhammad, Sayf al-Din Yasin& Sam, Adam Khatir. 2005. Assessment of radiological impact of phosphate fertilization on arable land. Sudan Journal of Basic Sciences. |n Series : Chemistry،Vol. 3, no. 7, pp.133-152.
https://search.emarefa.net/detail/BIM-294208
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Muhammad, Sayf al-Din Yasin& Sam, Adam Khatir. Assessment of radiological impact of phosphate fertilization on arable land. Sudan Journal of Basic Sciences. |n Series : Chemistry Vol. 3, no. 7 (Mar. 2005), pp.133-152.
https://search.emarefa.net/detail/BIM-294208
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Muhammad, Sayf al-Din Yasin& Sam, Adam Khatir. Assessment of radiological impact of phosphate fertilization on arable land. Sudan Journal of Basic Sciences. |n Series : Chemistry. 2005. Vol. 3, no. 7, pp.133-152.
https://search.emarefa.net/detail/BIM-294208
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references : p. 149-151
رقم السجل
BIM-294208
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر