Uranium in the Surrounding of San Marcos-Sacramento River Environment (Chihuahua, Mexico)

Table 6

Activity concentrations and their uncertainties of total uranium, as well as 𝐾_𝑑 coefficients, in solution (U_d) and in suspended matter (U_sm), from water samples extracted at San Marcos dam. Samples were collected in 2007.

Sample	Ud (mBq/L)	Usm (kBq/kg)	𝐾d (L/kg)	Comments
D1	197±18	0.15±0.01	7.6×10^2	Dam barrier
D2	524±48	0.16±0.01	3.1×10^2	Groundwater input (spring)
D3	210±18	0.22±0.02	1.0×10^3
D4	215±20	0.20±0.02	9.3×10^2	River water input
D5	289±25	0.11±0.01	3.8×10^2
D6	143±14	n.d.*	—

* n.d. means below detection limit.