A sensitive method for the measurement of ammonium in soil extract and water

Hojeong Kang, Emily H. Stanley, Seok Soon Park

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Ammonium is one of the most important inorganic nutrients in many ecosystems. The utility of a sensitive method for the measurement of ammonium (NH4 +) in water, soil and plant-derived samples using fluorescence of an o-phthaldialdehyde (OPA)-based compound was evaluated in this study. This method involves less toxic chemicals than a conventional method, requires minimal equipment, and allows for fairly rapid sample processing. This method is not only sensitive for low (e.g., sub-micromolar) NH4 + concentrations, but also applicable for samples with much higher concentrations (> 100 μM NH4 +) by using a modified spectrophotometric protocol developed herein. This evaluation demonstrates that this method provides a valuable tool for the measurement of NH4 + in a variety of environmental samples including soil extracts, litter leachates and highly polluted water.

Original languageEnglish
Pages (from-to)2193-2201
Number of pages9
JournalCommunications in Soil Science and Plant Analysis
Volume34
Issue number15-16
DOIs
Publication statusPublished - 2003 Jan 1

Fingerprint

ammonium
extracts
soil
water
methodology
leachates
toxic substances
sampling
leachate
litter
fluorescence
soil sampling
soil water
method
ecosystems
nutrient
ecosystem
nutrients

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Soil Science

Cite this

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A sensitive method for the measurement of ammonium in soil extract and water. / Kang, Hojeong; Stanley, Emily H.; Park, Seok Soon.

In: Communications in Soil Science and Plant Analysis, Vol. 34, No. 15-16, 01.01.2003, p. 2193-2201.

Research output: Contribution to journalArticle

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