On the uranium content in some technogenic products potential environmental pollutants

Todorovsky, D.; Kulev, I.

doi:10.1007/bf02163387

Cited by 14 publications

(2 citation statements)

References 9 publications

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“…Phosphate ore has the highest uranium content as expected while GNPK has the lowest value. Also, our present data for U content are in agreement with that published elsewhere [5]. Uranium content found in our phosphate ore sample (i.e., 72.6 ppm) is higher than the measured for Abu Tartoor area close to the Red Sea, 50.0 ppm [6].…”

Section: Instrumental Neutron Activation Analysissupporting

confidence: 82%

Assessment of some industrial pollutants and their impact on the environment

1999

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The results obtained by the analysis of raw materials and product samples collected from the three industries in Abu Zaabal area for the elements U, Th, La, Ce, Gd, Cr, Sb, Sc, Hf, Na, Fe, Lu, Zn and Au in the samples under study are presented and discussed.U content (in ppm) was found to be as follows: phosphate ore = 72.6, GSSP = 50.45, SSP = 42.65, DCP = 8.36, Gypsum = 5.31 and GNPK = 4.664. The La content in the phosphate ore is 40.0 ppm. The Cr content in fertilizers is in the range 12.12 -19.56 ppm except gypsum that has the lowest value of 0.406 ppm.In the alum company as well as ARACEMCO samples all the important elements have been analyzed either in the raw materials or in the products using NAA, namely U, Th, lanthanides as well as other elements.U, Ce, Co La, Cr .... etc. contents in the reference water samples are compared with two drainage water samples. Also U, Ce, Cr and Th have been analyzed.All the elements content in the leaf samples collected from AZFC zone are higher than their values in the reference leaf samples from Mounofia. Also, the elements content of the unwashed sample is higher than the values found in the same but washed sample.The measurements of the natural radioactivity in phosphate ore and in some fertilizer samples from AZFC are compared with the corresponding values obtained by NAA technique for the same samples. The comparison shows a negligible difference as regards the uranium content for each sample.

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Section: Instrumental Neutron Activation Analysissupporting

confidence: 82%

Assessment of some industrial pollutants and their impact on the environment

1999

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“…The activity concentrations depend on the origin of the fertilizer components, and widely vary from one country to another. The presence of natural radionuclides in fertilizers derived from phosphate ore have been investigated by many authors during the past decades [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. The reported activity concentration of 238 U in phosphate is 5-50 times higher than normal soil [2,17].…”

Section: Introductionmentioning

confidence: 99%

Natural radioactivity measurements in agricultural soil, fertilizer and crops in some specific areas of Kingdom of Saudi Arabia

Latif¹,

Kinsara²,

Molla³

et al. 2014

Radiochimica Acta

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High Purity Germanium (HPGe) detector gamma-ray spectrometry with 500 cc Marinelli beaker geometry was used for radioactivity measurement in some specific areas of Kingdom of Saudi Arabia (KSA).The detection limits of 210 Pb, 238 U, 226 Ra, 232 Th and 40 K in soil, fertilizers, and vegetables lie mostly below 1 Bq/kg. The activity concentrations of 238 U and 226 Ra in local phosphate fertilizers were measured in the range of 236.8-879.0 Bq/kg and 101.5-297.0 Bq/kg, respectively. The respective activity concentrations of 238 U and 226 Ra measured in one charge of German phosphate fertilizer are in the range of 552.7-790.0 Bq/kg and 280.6-317.0 Bq/kg. The activity concentrations of 232 Th are assessed to have maximum values up to 2.24 Bq/kg in locally manufactured phosphate fertilizers. Local urea exhibited concentration level (Bq/kg) of 210 Pb, 238 U, 226 Ra, 232 Th and 40 K below the detection limit. Mean values of activity concentrations of 238 U in agricultural soil of Wadi Fatima, Taif, Hada Al-Sham, Madina Cityand Abyar Al-MashiMadina are 21.7 ± 3.24, 38.2 ± 4.1, 17.6 ± 2.1, 34.3 ± 3.5 and 32.7 ± 2.4 Bq/kg, respectively. The respective mean of 226 Ra activity concentrations in those areas are 12.16 ± 1.16, 20.2 ± 1.33, 11.21 ± 0.4, 21.4 ± 1.7 and 21.0 ± 1.22 Bq/kg. The specific activity of 232 Th in the respective areas has been measured as 12.6 ± 1.3, 25.3 ± 0.8, 11.5 ± 0.9, 20.4 ± 2.4 and 20.0 ± 1.2 Bq/kg. Activity concentrations of 210 Pb, 238 U, 226 Ra and 232 Th in the vegetable samples are mostly found in the range of 0.37 Bq/kg to 37.8 Bq/kg. The 40 K specific activity lies in the range of 44.4-196 Bq/kg.The calculated absorbed dose rates in the representative locations are 24.07-53.28 nGy/h.

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