Research Article

Comparison of Natural Radioactivity of Commonly Used Fertilizer Materials in Egypt and Japan

Table 2

Activity concentrations of , , and in Japanese fertilizers.

Samples nameSample
code
Composition
of fertilizer
Specific activity (Bq kg−1)

Fertilizer 1JF1Phosphoric acid 10%
Fertilizer 2JF2Phosphoric acid 8%
Fertilizer 3JF3Phosphoric acid 20%
Fertilizer 4JF4Phosphoric acid 20%
Fertilizer 5JF5Phosphoric acid 17%