Since zeolite have been widely used for several industries, including paint, paper,
fertilizer, building, textiles, and agriculture, it is important to measure the
radionuclides concentrations to determine the health effect and to protect
environment. To determine the activity concentrations and distribution of naturally
occurring radionuclides, twenty-eight zeolite rock and soil samples were collected
from Jabal Shamah in Jeddah, in the Makkah region of Saudi Arabia. Furthermore,
two 500G artificial zeolite samples that Sigma Life Science brought from Germany
were analyzed. The measurements were performed using gamma-ray spectrometry
of NaI (Tl) detector. In zeolite rock samples, the mean activity concentrations of
226Ra,
232Th, and40K were, respectively, 35.7± 1.8 Bq/kg, 29.3± 1.5 Bq/kg, and
282.9± 4.7 Bq/kg respectively while 226Ra, 232Th, and 40K concentrations in zeolite
soil samples were 27.9 ± 1.4 Bq/kg, 23.1 ± 1.2 Bq/kg, and 293.0 ± 14.7 Bq/kg,
respectively. But for 226Ra, 232Th, and 40K artificial zeolite samples, the activity
concentrations were 82.2 ± 4.17 Bq/kg, 69.6 ± 3.52 Bq/kg, and 739.3 ± 37.0 Bq/kg,
respectively.
The levels of radiation hazard metrics, including internal and external hazard,
radium equivalent activity annual dose, and other recommended limits by the
International Commission on Radiological Protection (ICRP), were also calculated
and compared with others. Furthermore, the concentrations of the heavy elements
and their oxides were measured using x-ray fluorescence (XRF); the findings were
compared with literature descriptions of ranges from other regions of the world.