Long-term frozen storage of stream water samples for dissolved orthophosphate, nitrate plus nitrite, and ammonia analysis

Many researchers have used freezing as an effective, short‐term, water sample preservation method for subsequent nutrient analysis. In this study, filtered samples held at −16±2°C for 4–8 years were reanalyzed for orthophosphate, nitrate plus nitrite, and ammonia. Orthophosphate and ammonia concentr...

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Veröffentlicht in:	Water resources research 1993-10, Vol.29 (10), p.3357-3362
Hauptverfasser:	Avanzino, Ronald J., Kennedy, Vance C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Freshwater
Online-Zugang:	Volltext
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