Affiliations: Soil and Water Pollution Unit,Nuclear Research
Center,Cairo,Egypt | Nuclear Physics Laboratory,Physics Department, Faculty
of Girls, Ain Shams University, Cairo, Egypt
Abstract: Thirty-two surface (0-20 cm) soil samples were collected from
different locations in Egypt representing non-polluted,moderately and highly
polluted soils.The aim of this study was to evaluate total Zn content in
alluvial soils of Nile Delta in Egypt by using the delayed neutron activation
analysis technique (DNAA),in the irradiation facilities of the first Egyptian
research reactor (ET-RR-1).The gamma-ray spectra were recorded with a hyper
pure germanium detection system.The well resolved gamma-ray peak at 1116.0 kev
was efficiently used for ^65Zn content determination.Zn content in non-polluted
soil samples ranged between 74.1 and 103.8 ppm with an average of 98.5 ±
5.1 ppm.Zn content in moderately polluted soils ranged between 136.0 and 232.5
ppm with an average of 180.1 ± 32.6 ppm.The highest Zn levels ranging
from 240.0 and 733.0 ppm with an average of 410.3 ± 54.4 ppm,were
observed in soil samples collected from,either highly polluted agricultural
soils exposed to prolonged irrigation with industrial wastewater or surface
soil samples from industrial sites.