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. 2022 Mar 23;12:4945. doi: 10.1038/s41598-022-09091-2

Table 4.

The difference of the gross α and β radioactivity concentrations of drinking water samples in different periods (× 10–2 Bq/L).

Gross α Gross β
Range Mean ± SDa Range Mean ± SD
Raw water
Dry season 0.8–7.4 3.0 ± 2.8 11.8–30.0 20.6 ± 5.8
Wet season 0.8–8.2 2.3 ± 2.5 4.2–31.0 17.8 ± 7.9
p value 0.505 0.452
Factory water
Dry season 0.8–5.4 1.5 ± 1.5 6.3–24.8 19.4 ± 6.3
Wet season 0.8–2.7 1.2 ± 0.8 6.5–25.2 16.9 ± 5.7
p value 0.573 0.463
Tap water
Dry season 0.8–2.6 1.2 ± 0.8 1.4–32.8 16.2 ± 9.9
Wet season 0.8–2.3 1.4 ± 0.7 8.1–24 18.2 ± 5.2
p value 0.665 0.348

aSD standard deviation of the activity concentration.