Main Title |
Analysis of Sulfur in Soil, Plant and Sediment Materials: Sample Handling and Use of an Automated Analyzer. |
Author |
David, M. B. ;
Mithcell, M. J. ;
Aldcorn, D. ;
Harrison, R. B. ;
|
CORP Author |
Illinois Univ. at Urbana-Champaign. Dept. of Forestry. ;Washington Univ., Seattle. Coll. of Forest Resources. ;State Univ. of New York Coll. of Environmental Science and Forestry, Syracuse.;Corvallis Environmental Research Lab., OR. |
Publisher |
c1989 |
Year Published |
1989 |
Report Number |
EPA-R-813572; EPA/600/J-89/108; |
Stock Number |
PB90-108457 |
Additional Subjects |
Soil chemistry ;
Sulfur ;
Quantitative analysis ;
Analyzers ;
Soil tests ;
Plants(Botany) ;
Sediments ;
Calibrating ;
Freeze drying ;
Reprints ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB90-108457 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
7p |
Abstract |
Methods for analyzing soil, vegetation and sediment samples for total sulfur (S) and handling solid samples for analysis of S constituents were examined. A LECO automated total S analyzer (SC-132) was used for the analysis of vegetation, sediments and soil samples. Results from the LECO analyzer compared favorably with other currently used total S techniques such as alkaline oxidation. Calibrating the instrument on soil or vegetation standards using two combustion accelerators improved accuracy and recovery. The upper 99% confidence interval RSD values for duplicate samples using the LECO analyzer were <15% for mineral soil, <8% for forest floor and <3% for sediment samples. Sample analysis takes <3 min and provides a direct readout of the total S value. Freeze-drying soil samples caused minor changes (<15%) in S constituent analyses (Zn-HCl reduction, HI-S and extractable sulfate) when compared to fresh (field moist, refrigerated) samples. Oven-drying at 65 C caused greater changes in soils than freeze-drying, primarily in extractable sulfate. (Copyright (c) 1989 Pergamon Press.) |