Paraquat in Surface Water of Some Streams in Mai Chau Province, the Northern Vietnam: Concentrations, Profiles, and Human Risk Assessments

Table 3

The risk assessment values of the residents using stream water in the studied areas in the dry and rainy seasons.

	Dry season					Rainy season
Cun Pheo village
Mean	0.0065	0.0342	0.0121	0.0685	0.1209	0.0127	0.0070	-	-	0.0197
SD	0.0068	0.0376	0.0136	0.0751	0.1330	0.0086	0.0099	-	-	0.0158
Min	0.0008	0.0002	0.0001	0.0004	0.0008	0.0000	0.0000	-	-	0.0000
Max	0.0229	0.1224	0.0459	0.2448	0.4360	0.0279	0.0262	-	-	0.0465
Median	0.0029	0.0170	0.0058	0.0339	0.0596	0.0123	0.0017	-	-	0.0135
	14
Pieng Ve village
Mean	0.0016	0.0088	0.0032	0.0177	0.0313	0.0043	0.0033	-	-	0.0076
SD	0.0010	0.0052	0.0019	0.0104	0.0184	0.0062	0.0046	-	-	0.0108
Min	0.0001	0.0004	0.0002	0.0008	0.0016	0.0000	0.0000	-	-	0.0000
Max	0.0031	0.0157	0.0062	0.0313	0.0558	0.0170	0.0123	-	-	0.0293
Median	0.0015	0.0092	0.0031	0.0184	0.0321	0.0002	0.0004	-	-	0.0006
	13
Xam Khoe village
Mean	0.0022	0.0107	0.0044	0.0214	0.0387	0.0007	0.0001	-	-	0.0007
SD	0.0012	0.0063	0.0024	0.0125	0.0221	0.0004	0.0001	-	-	0.0004
Min	0.0009	0.0036	0.0018	0.0073	0.0137	0.0002	0.0000	-	-	0.0002
Max	0.0045	0.0268	0.0089	0.0536	0.0938	0.0013	0.0002	-	-	0.0015
Median	0.0020	0.0087	0.0039	0.0174	0.0316	0.0007	0.0001	-	-	0.0008
	12
Mai Hich village
Mean	0.0009	0.0044	0.0018	0.0088	0.0159	0.0001	0.0000	-	-	0.0001
SD	0.0005	0.0029	0.0011	0.0059	0.0103	0.0002	0.0000	-	-	0.0002
Min	0.0004	0.0021	0.0008	0.0042	0.0075	0.0000	0.0000	-	-	0.0000
Max	0.0020	0.0117	0.0039	0.0235	0.0411	0.0004	0.0001	-	-	0.0005
Median	0.0008	0.0030	0.0017	0.0060	0.0110	0.0000	0.0000	-	-	0.0001
	11
Van Mai village
Mean	-	-	-	-	-	-	-	-	-	-
SD	-	-	-	-	-	-	-	-	-	-
Min	-	-	-	-	-	-	-	-	-	-
Max	-	-	-	-	-	-	-	-	-	-
Median	-	-	-	-	-	-	-	-	-	-
	10

Number of residents with using the stream water at studied sites.