The dissolved copper distribution in Narragansett Bay in the springtime of 
1977 is shown in Figure 2-6 (results of the Narragansett Bay Study Group). 
Concentrations were determined using the methods outlined earlier for pore 
waters. Several copper values fall far above a conservative mixing line, and are 
believed to reflect contamination. Most values, however, appear to define a 
simple conservative mixing line. These results show no evidence for an input of 
copper into the Bay by diffusion out of sediments. The Bay water results will 
be discussed in more detail elsewhere. 
_o 
CL 
CL 
cr 
LU 
CL 
CL 
o 
o 
o 
LJ 
> 
-J 
o 
CO 
CO 
o 
7 
6 
5 
4 
3 
2 
1 
24 26 28 30 32 34 
SALINITY, % 0 
t 
18 
NISKIN BOTTLE, SURFACE O 
( 1 m depth) 
NISKIN BOTTLE, BOTTOM □ 
PLASTIC BUCKET A 
□ A 
O ° 
A O 
O 
ZD 
u 
□ 
□ u □ 
A 
-A-L 
□ 
A 
-A 
Figure 2-6. Dissolved Cu vs. salinity in Narragansett Bay, 
in the Spring of 1977 (Narragansett Bay Study Group, in prep.). 
23 
