Water and soil samples from the Ross Dependency establish baseline pollutant levels in pristine Antarctic meltwaters and measure contamination near human stations. Samples were analyzed for trace metals like Pb, Cu, Zn, Cd, Ni, Fe, Cr, Mn, As, major anions, and mercury using multiple techniques to assess bioavailability and toxicity. The dataset was compiled by SCIOPS, with data collected and last updated in 1994.
Use Cases
- Compare trace metal concentrations (e.g., Pb, Cu, Zn) between pristine sites (Cape Evans, Wright Valley) and human-occupied sites (Scott Base, Vanda Station) to quantify anthropogenic impact.
- Analyze mercury content in water samples collected across seasons to assess temporal variability in pollutant levels.
- Correlate metal bioavailability data from 'totally recoverable', acid soluble, and dissolved technique results with potential water toxicity assessments.
- Use major anion analysis results from ion chromatography and titrations to characterize the overall ionic composition of Antarctic meltwaters.
Strengths
- Includes data from both pristine control sites and sites with intensive human activity for direct comparison.
- Analyzes pollutants using multiple techniques (totally recoverable, acid soluble, dissolved) providing different measures of metal bioavailability.
Limitations
- Dataset is temporally stale, with collection and last update occurring in 1994.
- Specific sample counts, row numbers, and geographic coordinates for sampling points are not provided.
Provenance
- Source
- SCIOPS, via NASA EarthData (nasa_earthdata).
- Collection Method
- Water and soil samples collected under sterile methods from pools, ponds, lakes, and flowing waters; analyzed using spectrometry, ion chromatography, and titrations.
- Time Range
- Samples collected circa 1994, with some follow-up sampling the following season.
- Freshness
- 1994-01-21
- Geography
- Ross Dependency, Antarctica, including Cape Evans, Cape Royds, Marble Point, Wright Valley, Scott Base, and Vanda Station.