Analysis for Liquid Samples
Available Nutrient and Carbon Analyses
We provide nutrient and carbon analysis for liquid and extracted environmental samples using dedicated instrumentation for inorganic and organic analyses. The OI Analytical Flow Solution continuous-flow analyzer measures ammonium-N (NH₄-N), nitrate/nitrite-N (NO₃/NO₂-N), nitrite-N (NO₂-N), and orthophosphate-P (PO₄-P). Additional dissolved carbon and nitrogen analyses are available using TOC-L instrumentation for total organic carbon (TOC) and total nitrogen (TN). The service supports water samples and extracted solid samples for environmental and research applications.
OI Analytical Flow Solution continuous-flow analyzer used for nutrient analysis in liquid samples
TOC-L analyzer used for total organic carbon (TOC) and total nitrogen (TN) measurements in liquid samples
Laboratory glassware prepared for nutrient and carbon analysis of liquid samples
Analytical Method
Liquid nutrient analyses are performed using automated colorimetric flow analysis and catalytic oxidation methods depending on the requested analyte. The OI Analytical Flow Solution continuous-flow analyzer determines ammonium-N (NH₄-N), nitrate/nitrite-N (NO₃/NO₂-N), nitrite-N (NO₂-N), and orthophosphate-P (PO₄-P) using automated wet chemistry and spectrophotometric detection. Total organic carbon (TOC) and total nitrogen (TN) are measured using TOC-L instrumentation, where samples undergo catalytic oxidation, and the generated gases are quantified to determine carbon and nitrogen concentrations. Instrument software calculates and reports final analyte concentrations for environmental and research applications.
Analysis Fees
| Single Analyte ($/Sample) | Two Analytes ($/Sample) | Note | ||
|---|---|---|---|---|
| Internal Academic | $3.00 | $4.00 | Applies to nutrient analysis in liquid extracts | |
| External Academic | $5.00 | $6.00 | Applies to nutrient analysis in liquid extracts | |
| External Market | $9.00 | $12.00 | Applies to nutrient analysis in liquid extracts |
*The two-analyte fee applies only when nutrient extract concentrations are within the same analytical range and both analytes are processed together.