Castle Lake Limnological Research Station
in the Shasta-Trinity National Forest, Northern California, USA Contents
Current weather
CA - Mount Shasta
- Clear sky
- Temperature: 22 °C
- Wind: Variable from West to North-Northeast, 14.8 km/h, gusts up to 38.9 km/h
- Pressure: 1019 hPa
- Rel. Humidity: 33%
- Visibility: 16.1 kilometers
Wed, 2008-08-27 19:56
Nutrient Analysis
All the Castle Lake nutrient analyses involve mixing water samples with various chemicals. These chemicals react with the nutrients, forming a colored solution. The nutrient concentration is proportional to the intensity of the solution's color. A spectrophotometer is used to measure the concentration of the colored compound by measuring the light that it absorbs.
At Castle Lake, we conduct the analysis for Nitrate (NO3), Soluable Reactive Phosphorus (SRP), and Ammonia (NH4). Our lab back at UCDavis perform the analyses for Total Phosphorus (TP), and Disolved Inorganic Carbon (DIC).
