Table 1: Metal, nutrients and total dissolved solids (TDS) shown as nominal concentrations for the low, moderate and high exposure solutions generated using site water collected from Latte and Coffee Creeks at two times of the year.
Test Type |
a) Metal Mixtures |
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b) Metal Mixtures + Nutrients |
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c) Metal Mixtures + Nutrients + TDS* |
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Mixture Solution |
Copper |
Chromium |
Arsenic |
Uranium |
Zinc |
Sulphate |
Ammonia |
TDS |
Chemical Form1 |
Copper Chloride Dihydrate |
Ammonium Dichromate |
Potassium Dihydrogen Arsenate |
Uranyl Nitrate Hexahydrate |
Zinc Sulphate Heptahydrate |
Calcium Sulfate Dihydrate and Magnesium Sulfate Heptahydrate |
Ammonium Chloride |
See footnote2 |
Low |
3.5 |
1.5 |
2 |
31 |
4 |
300 |
2 |
600 |
Moderate |
3.5 |
1.5 |
5 |
86 |
8 |
300 |
2 |
800 |
High |
3.5 |
1.5 |
8 |
100 |
16 |
300 |
2 |
1,000 |
Notes: 1 - Chemical forms used to prepare mixture solutions; 2 -TDS concentrations were achieved by mixing calcium chloride dihydrate, magnesium chloride hexahydrate, calcium sulfate dehydrate and magnesium sulfate heptahydrate N -Nitrogen; * Test were only performed using water collected in summer from both, Latte and Coffee creeks.