Comparison of activities of 226Ra and 228Ra in tap and spring water from some areas of Morocco and Cameroon
R. Marie Lydie1, 2*, O.K. Hakam1, A. Choukri1
1Equipe de Physique et Techniques Nucléaires, Laboratoire PRE,
Faculté des Sciences, Université Ibn Tofail, Kenitra, Maroc
2Agence Nationale de Radioprotection du Cameroun (ANRP)
* Corresponding author. E-mail: email@example.com
Received: 06 February 2012; revised version accepted: 22 March 2012
The activities of 226Ra and 228Ra obtained for 56 taps and springs water samples collected in Yaoundé localities in Cameroon and 42 other of the same samples collected in some regions in Morocco are given in this work. Assuming an individual daily consumption of 2.5 litres of water, the equivalent doses of the maximal activities measured in all samples collected in Morocco are: 3326 Bq/y for 226Ra and 558 Bq/y for 228Ra. However the same calculation with water samples from Cameroon gives: 12611 Bq/y for 226Ra and 1452 Bq/y for 228Ra. According to the ICRP recommendations (7×103 Bq/y for 226Ra and 9×103 Bq/y for 228Ra), these results do not present any risk for public health in Morocco, but in Cameroon there is a need for regular monitoring of radiological tap water quality.
Keywords: Drinking water; Concentration; Annual intake; Gamma spectrometry; Radium.