Risk Assessment and Prediction of Heavy Metal Pollution in Groundwater and River Sediment: A Case Study of a Typical Agricultural Irrigation Area in Northeast China

Figure 5

Diffusion and transport of As in shallow aquifer. (a) Distribution of initial content; (b) after 1 year; (c) after 2 years; (d) after 3 years; (e) after 5 years; (f) after 10 years.

(a)

(b)

(c)

(d)

(e)

(f)