Table 3.

Comparison of the radioactivity of gross α and gross β in tap waters of this study and other studies from different provinces in China (30).

		Jiangsu	Shandong	Guangdong	Guangxi	Hainan	Liaoning	This study
Gross α (Bq/L)	Range	NDa-0.110	ND~0.412	ND−0.110	ND−0.027	ND~0.045	–	0.008~0.011
	Mean ± SD	0.075 ± 0.019	0.169 ± 0.131	0.063 ± 0.033	0.010 ± 0.007	0.012 ± 0.018	0.040	0.009 ± 0.002
Gross β (Bq/L)	Range	ND−0.140	ND~0.859	ND−0.420	0.023–0.064	0.012–0.221	–	0.042–0.112
	Mean ± SD	0.101 ± 0.028	0.327 ± 0.276	0.154 ± 0.105	0.045 ± 0.013	0.050 ± 0.036	0.150	0.043 ± 0.016

^aND, Not detectable.