Arsenic in estuaries

In contrast to open ocean water, arsenic concentrations in estuary waters often significantly vary with time and location. The arsenic contents of estuary waters and sediments depend on many factors, including 

Beaufort Sea Alaskan coast near Prudhoe Bay, USA 192 4.2-28.4 Trefry et al. (2003) 

Beaufort Sea (western) Alaska, USA 1 0 surface sediment 10.4-43 Valette-Silver et al. (1999) 

Carbonate sediments global average 1.0 Mandal and Suzuki (2002), 202 

Deep ocean clays global average 13 Turekian and Wedepohl (1961), Faure (1998), 514 

---