| |
All samples
|
Spring main channel samples
|
|---|
|
UTHg
|
UTHg
|
FTHg
|
PTHg
|
|---|
|
n = 55
|
n = 13
|
n = 13
|
n = 13
|
|---|
|
UTHg
|
–
|
–
|
−0.33
|
0.99
|
|
FTHg
|
nd
|
−0.33
|
–
|
−0.42
|
|
PTHg
|
nd
|
0.99
|
−0.42
|
–
|
|
UMeHg
|
0.50
|
0.71
|
−0.23
|
0.70
|
|
FMeHg
|
0.18
|
−0.41
|
0.79
|
−0.48
|
|
PMeHg
|
0.56
|
0.79
|
−0.59
|
0.82
|
|
DOC
|
0.11
|
−0.31
|
0.75
|
−0.37
|
|
POC
|
0.75
|
0.98
|
−0.33
|
0.98
|
|
NO3
|
0.29
|
−0.72
|
0.31
|
0.37
|
|
SSC
|
0.88
|
0.98
|
−0.38
|
0.98
|
|
Turbidity
|
0.88
|
0.97
|
−0.41
|
0.97
|
|
FDOM
|
0.13
|
−0.30
|
0.75
|
−0.37
|
|
DO
|
0.10
|
0.07
|
−0.62
|
0.13
|
- Entries shown in bold are significant at P < 0.001. Methylmercury data are from Bergamaschi et al. (2011)
-
UTHg total mercury concentration in unfiltered water samples; FTHg concentration of total mercury in filter-passing fraction; PTHg particulate mercury concentration, calculated as the difference between the total Hg in unfiltered and filter-passing fractions. FMeHg concentration of methyl mercury in filter-passing sample; UMeHg methyl mercury concentration in unfiltered samples; PMeHg concentration of particulate methyl mercury, calculated as the difference between UMeHg and FMeHg. DOC dissolved organic carbon concentration; POC particulate organic matter concentration as carbon. SSC suspended sediment concentration. FDOM fluorescent dissolved organic matter. DO dissolved oxygen concentration