Total Copper and Copper Complexation Capacity Determinations of Pacific Northwest Seawater

摘要

The apparent copper complexing capacity (CC) of Pacific Northwest coastal marine waters ranged between 7.5 and 32.8 mu g/l (anti X = 18.7, S = 5.51, N = 57) at one sampling site. At Jervis Inlet, B.C., Canada, vertical gradients were identified with very low CC at the surface and much higher CC in bottom waters (500 m). Copper complexation as measured by ASV appears to be associated with uv oxidizable material. Unfiltered coastal (44 degrees to 50 degrees N) seawater from 1 to 600 meter depth was analyzed for total copper concentration. The average concentration over 42 stations was 0.27 mu g/l, S.D. = 0.17 mu g/l and values ranged between 0.01 and 0.9 mu g/l. Analytical procedures and factors affecting interpretation of CC determination are discussed. (ERA citation 10:014490)