Microwave digestion of plant samples for sulfur analysis
作者:
CalvinR. Finch,
H. Dale Pennington,
CalvinG. Lyons,
SaraE. Littau,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1990)
卷期:
Volume 21,
issue 7-8
页码: 583-594
ISSN:0010-3624
年代: 1990
DOI:10.1080/00103629009368254
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The goal was to develop an easy, fast, and economical procedure to produce plant digests that can be accurately analyzed by plasma emission spectrometry for foliar sulfur content. The closed vessel microwave procedure described requires less than 2 hours to produce 12 digested 0.5 gram samples from the point of weighing the samples to applying them to plasma emission spectrometry analysis. The procedure utilizes nitric acid and hydrogen peroxide as a predigestion. The predigested samples are then each microwaved for 2.25 minutes. With this procedure, sulfur levels are within an average of 1.27% of that reported for the NBS Citrus Standard, are within 102.25% to 99.44% of the values determined for wet ash digested materials and display recovery rates of 96 to 98% for known levels of sulfur in the range expected in plant foliage.
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