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Radiation hazard of Chemical Fertilizers used in Growing Agriculture Crops in Iraq |
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PP: 127-134 |
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doi:10.18576/jrna/050207
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Author(s) |
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Nada Farhan Kadhim,
Yassir Atta Baqir,
Laith Ahmed Najam,
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Abstract |
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| Sixteen samples of granular chemical fertilizer types (NPK, DAP, and Urea) were collected from Iraqi nurseries and analyzed using NaI(Tl) gamma-ray detector. Three radionuclides K-40, U-238, and Th-232 were detected in the studied samples. All NPK fertilizers have a specific activity of K-40 greater than the standard limits except Some samples (N.1, N.4, and N.5) were less than standard limits, the maximum specific activity of K-40 2768.395 Bq/kg was detected in the Spain sample, and the mean specific activity of K-40 in NPK is much higher than the mean specific activity of other types. For Dap and Urea samples the maximum specific activity of Bi-214 (4.14 Bq/kg) and Tl-208 (0.384982 Bq/kg) were detected in Lebanon and Iranian samples respectively, the Italian and Russian samples respectively for NPK, all were lower than the standard limits. Depending on the measured specific activities, all the mean of the radiation hazard parameters were less than the worldwide average limit except ELCR for some NPK fertilizers, and within the range for other types. This requires that using of NPK fertilizers must be under the radiological control. The study recommends to use the U.A.E fertilizer of NPK fertilizers (N.2), and the Iraqi fertilizer DAP and Urea fertilizers (D.2). |
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