O.I. Analytical - Nitrate plus Nitrite Nitrogen and Nitrite Nitrogen, USEPA by Segmented Flow Analysis (SFA) or Flow Injection Analysis (FIA), Publication 14900301

O.I. Analytical - Orthophosphate, USEPA by Segmented Flow Analysis (SFA) or Flow Injection Analysis (FIA), Publication 14930201

Stable Isotope Ratio Facility for Environmental Research (SIRFER) Standard Operating Procedures

SO2 EA combustion IRMS method, Center for Stable Isotope Biogeochemistry (CSIB) at Department of Integrative Biology, University of California at Berkeley

U.S. Geological Survey TWRI Book 9 Chapter A6. Section 6.6. Alkalinity and Acid Neutralizing Capacity, version 4.0 (9/2012)