The ammonium (NH4+) dissolved in ground water in the center of a contaminant plume on Cape Cod, Massachusetts, has persisted for decades after it entered the subsurface, while other forms of nitrogen...
List of analytes and holding times with recommended volumes and container types - nitrite, nitrate, pH, turbidity, E. coli, ammonia, heavy metals, etc.
Record sheet for samples and holding times of common analytes - BOD, chlorine, ammonia, oil and grease, nitrate, nitrite, mercury, total phosphates, etc.
Access Washington Lab Accreditation Program, table of holding times, extensive list of commonly sampled substances including heavy metals, pesticides, BOD, oil and gas.
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