Sources, Fluxes, and Biogeochemical Cycling of Silver in the Oceans - Reviews of Environmental Contamination and Toxicology - page 36

Fig. 5 Temporal variations of silver concentrations (pmol/kg) measured in waters collected in the
North Pacifi c between 1981 and 2009. Data from Martin et al. ( 1983 ), Zhang et al. ( 2001 , 2004 ),
Ranville and Flegal ( 2005 ), and Kramer et al. ( 2011 ). Also included are previously unpublished
data from our laboratory
Fig. 6 Oceanic enrichment of silver. Contour plot of surface water silver concentrations (pmol/
kg) in the North Pacifi c Ocean. The solid line indicates the ship's cruise track; contours are extrapo-
lated from data collected along the cruise track (from Ranville and Flegal 2005 )