High Environmental Radioactivity in Artisanal and Small-Scale Gold Mining in Eastern Democratic Republic of the Congo
نویسندگان
چکیده
The radioactivity associated with artisanal and small-scale gold mining activities (ASM) carried out along the Ulindi River, in eastern Democratic Republic of Congo, was evaluated by gamma-ray spectrometry inductively coupled plasma–mass soil sediment samples. results revealed that activity concentrations 238U (up to 3127 ± 98 Bq kg?1), 226Ra 2710 89 kg?1) 232Th 2142 162 were 71- 89-fold higher than worldwide average reported UNSCEAR soils. Primordial radionuclides are, thus, present high deposits region ambient effective radiation dose rate determined at 8.4 mSv y?1 (range 0.5 40 y?1). This area may be classified as a natural background (HBRA). risk for miners population members manipulating those geological materials assessed through radiological parameters. such radium equivalent index (RaEq), outdoor gamma absorbed (ODRA), annual (AEDE), excess lifetime cancer (ELCR). mean values these parameters significantly elevated comparison world levels indicated existence significant risks local population. A safety policy seems needed protect workers this region.
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ژورنال
عنوان ژورنال: Minerals
سال: 2022
ISSN: ['2075-163X']
DOI: https://doi.org/10.3390/min12101278