1 0 0
C o n d u c tiv ity ( u s /c m )
8 0
6 0
0 .8 4 9 6 m M
4 0
2 0
0
0 .0
0 .5
1 .0
1 .5
C o n c e n tr a tio n ( m M )
2 .0
2 .5