کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1875678 | 1532090 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Rare earth elements in core marine sediments of coastal East Malaysia by instrumental neutron activation analysis
ترجمه فارسی عنوان
عناصر کمیاب زمین در هسته های دریایی ساحل شرقی مالزی با استفاده از تجزیه و تحلیل فعال سازی نوترون
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
چکیده انگلیسی
A study was carried out on the concentration of REEs (Dy, Sm, Eu,Yb, Lu, La and Ce) that are present in the core marine sediments of East Malaysia from three locations at South China Sea and one location each at Sulu Sea and Sulawesi Sea. The sediment samples were collected at a depth of between 49 and 109Â m, dried, and crushed to powdery form. The entire core sediments prepared for Instrumental Neutron Activation Analysis (INAA) were weighted approximately 0.0500Â g to 0.1000Â g for short irradiation and 0.1500Â g to 0.2000Â g for long irradiation. The samples were irradiated with a thermal neutron flux of 4.0Ã1012Â cmâ2Â sâ1 in a TRIGA Mark II research reactor operated at 750Â kW. Blank samples and standard reference materials SL-1 were also irradiated for calibration and quality control purposes. It was found that the concentration of REEs varies in the range from 0.11 to 36.84Â mg/kg. The chondrite-normalized REEs for different stations suggest that all the REEs are from similar origins. There was no significant REEs contamination as the enrichment factors normalized for Fe fall in the range of 0.42-2.82.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Radiation and Isotopes - Volume 107, January 2016, Pages 17-23
Journal: Applied Radiation and Isotopes - Volume 107, January 2016, Pages 17-23
نویسندگان
Ahmadreza Ashraf, Elias Saion, Elham Gharibshahi, Halimah Mohamed Kamari, Yap Chee Kong, Mohd Suhaimi Hamzah, Md Suhaimi Elias,