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Natural radioactivity and heavy metals measurement in rice and flour consumed by the inhabitants in K.S.A

Author: 
Al-Zahrani, J.H.
Subject Area: 
Life Sciences
Abstract: 

The natural radionuclide’s 226Ra, 232Th and 40K and some heavy metals (Fe, Cd, Zn, Cu, Mn, Ni, and Pb) were measured in the rice and the flour samples consumed in Saudi Arabia. Gamma ray spectrometry was used to determine the activity concentration of the three nuclides. Heavy metals were analyzed by an inductively coupled plasma optical emission spectrophotometer (ICP-OES). The results indicate that the average concentration of 226Ra, 228Th, and 40K in the rice samples were 1.08, 1.19 and 83.08 Bq kg-1, respectively. While, in the flour samples, the average concentrations were 1.65, 1.61 and 171..31 Bqkg-1, respectively. The ingestion doses were calculated to be 0.224μSvY-1for the rice and 0.471 μSvY-1 for the flour samples which are below the recommended 1 mSv limit. The concentration of heavy elements (Fe. Cd, Mn, Ni, and Pb) in the rice and the flour samples were below the detection limits. Whereas, the mean contents of Cu were 3.75 mg/kg and 3.6 mg/kg of the rice and the flour samples, respectively. The mean values of Zn in the rice and the flour samples were 19.42 mg/kg and 17.3 mg/kg, respectively. The daily intake of Cu and Zn through the rice and the flour samples were lower than the tolerable daily intakes by FAO/WHO; this indicates there is no risk due to the intake of these foods to the people.

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EDITORIAL BOARD

Dr. Swamy KRM
India
Dr. Abdul Hannan A.M.S
Saudi Arabia.
Luai Farhan Zghair
Iraq
Hasan Ali Abed Al-Zu’bi
Jordanian
Fredrick OJIJA
Tanzanian
Firuza M. Tursunkhodjaeva
Uzbekistan
Faraz Ahmed Farooqi
Saudi Arabia
Eric Randy Reyes Politud
Philippines
Elsadig Gasoom FadelAlla Elbashir
Sudan
Eapen, Asha Sarah
United State
Dr.Arun Kumar A
India
Dr. Zafar Iqbal
Pakistan
Dr. SHAHERA S.PATEL
India
Dr. Ruchika Khanna
India
Dr. Recep TAS
Turkey
Dr. Rasha Ali Eldeeb
Egypt
Dr. Pralhad Kanhaiyalal Rahangdale
India
DR. PATRICK D. CERNA
Philippines
Dr. Nicolas Padilla- Raygoza
Mexico
Dr. Mustafa Y. G. Younis
Libiya
Dr. Muhammad shoaib Ahmedani
Saudi Arabia
DR. MUHAMMAD ISMAIL MOHMAND
United State
DR. MAHESH SHIVAJI CHAVAN
India
DR. M. ARUNA
India
Dr. Lim Gee Nee
Malaysia
Dr. Jatinder Pal Singh Chawla
India
DR. IRAM BOKHARI
Pakistan
Dr. FARHAT NAZ RAHMAN
Pakistan
Dr. Devendra kumar Gupta
India
Dr. ASHWANI KUMAR DUBEY
India
Dr. Ali Seidi
Iran
Dr. Achmad Choerudin
Indonesia
Dr Ashok Kumar Verma
India
Thi Mong Diep NGUYEN
France
Dr. Muhammad Akram
Pakistan
Dr. Imran Azad
Oman
Dr. Meenakshi Malik
India
Aseel Hadi Hamzah
Iraq
Anam Bhatti
Malaysia
Md. Amir Hossain
Bangladesh
Ahmet İPEKÇİ
Turkey
Mirzadi Gohari
Iran