Microwave digestion of plant samples for sulfur analysis
- 1 May 1990
- journal article
- research article
- Published by Informa UK Limited in Communications in Soil Science and Plant Analysis
- Vol. 21 (7-8), 583-594
- https://doi.org/10.1080/00103629009368254
Abstract
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.This publication has 3 references indexed in Scilit:
- Microwave energy for acid decomposition at elevated temperatures and pressures using biological and botanical samplesAnalytical Chemistry, 1986
- The Influence of Washing Procedures on Surface Removal and Leaching of Certain Elements from Pecan Leaflets1HortScience, 1976
- Sulfur in Plant Materials by Digestion with Nitric and Perchloric AcidSoil Science Society of America Journal, 1965