Comparison of two methods for measuring ammonium in solution samples
作者:
ThomasJ. Scott,
MyronJ. Mitchell,
Aileen Santos,
Peter Destaffen,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1989)
卷期:
Volume 20,
issue 11-12
页码: 1131-1144
ISSN:0010-3624
年代: 1989
DOI:10.1080/00103629009368141
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The measurement of NH4‐N in terrestrial and aquatic solutions by the commonly used automated indophenol‐blue method was compared to a new technique based on the conductimetric measurement of NH3. Average precision (2 times relative standard deviation) was 5.3% and 7.0% for the Ammonia‐Analyzer and Auto‐Analyzer, respectively. Average accuracy as determined from spike measurements was not statistically different between the Ammonia‐Analyzer (99.5%) and Auto‐Analyzer (96.2%). Although both methods predicted similar concentrations on the same sample set, the Ammonia‐Analyzer provides an alternative to NH4‐N measurement with fewer required reagents, and simpler instrumentation.
点击下载:
PDF (400KB)
返 回