Table 3.
Concentrations of As(III) and total As in filtered (<0.45 µm) water samples collected at Angle Lake (August 2016) and at Lake Killarney (August 2016 and September 2006). Percentage As(III) of total arsenic concentrations given in parentheses.
| site | date | depth (m) | As(III) (µg L−1) | total As (µg L−1) |
|---|---|---|---|---|
| Lake Killarney | August 2016 | 0.5 | BDL | 8.2 |
| 1.5 | 2.2 (26%) | 8.6 | ||
| 2.5 | BDL | 11.6a | ||
| 3.0 | BDL | 13.2 | ||
| September 2006b | 0.2 | 0.9 (3%) | 25.8 | |
| 1.5 | 1.0 (4%) | 25.1 | ||
| 1.9 | 1.0 (4%) | 24.3 | ||
|
| ||||
| Angle Lake | August 2016 | 0.5 | BDL | 1.7 |
| 5.5 | 0.8 (53%) | 1.5 | ||
| 10.5 | 0.8 (89%) | 0.9 | ||
| 13.0 | 9.4 (97%) | 9.7 | ||
a
average value of duplicate samples
b
samples from September 2006 were analyzed by ion chromatography inductively coupled plasma dynamic reaction cell mass spectrometry by Applied Speciation and Consulting (Tukwila, WA)
BDL = below detection limit