تحديد الفعالية النوعية للنظائر المشعة الطبيعية (228Ac, 214Bi, 214Pb, 212Pb, 40K)‎ في نباتات و أحياء أهوار جنوب العراق و مدينة البصرة و شمال غرب الخليج العربي

الملخص EN

The background radioactivity in the environment of marshes of southern Iraq and parts of province of Basra and the Northern Part of Arabian Gulf was determined by measuring the radioactivity for each one of (40K, 212Pb, 214Pb, 214Bi , 228Ac) in both plant and aquatic biological resources.

Using the Gamma Ray Spectrometry Technology with highly purity germanium (HPGe) detector, which is characterized by energy resolution (1.8keV) at the gamma line (1332keV) and efficiency up to 40 % using the Gamma Vission-32 program equipped by U.S.A Ortek Company to extract data from the resulting spectrum and the completion of the process of spectral analysis.

The measurements and sampling procedure cover (8) positions from different parts of marshes of southern Iraq and parts of province of Basra and the northern part of Arabian Gulf.

The results show that 40K specific activity range is: (80.1 -790.7 ) Bq/kg in plant and (530.15 – 1130) Bq/kg in aquatic biological resources ,and for the 212Pb specific activity range is: (0 – 11.2) Bq/kg in plant and (2.4 – 13.95) Bq/kg aquatic biological resources , and for the 214Pb specific activity range is: (0.6 – 7.16) Bq/kg in plant and (4.6 – 14.0) Bq/kg in aquatic biological resources , and for the 214Bi specific activity range is: (2.3 -4.3) Bq/Kg in plant and (0.5 – 4.7) Bq/kg in aquatic biological resources , while the 228Ac specific activity range is: (0.5 – 4.7) Bq/kg in plant and (0 – 2.7) Bq/kg in aquatic biological resources.