TY - JOUR
T1 - Analysis of sulfur in soil, plant and sediment materials
T2 - Sample handling and use of an automated analyzer
AU - David, Mark B.
AU - Mitchell, Myron J.
AU - Aldcorn, Deidre
AU - Harrison, Robert B.
N1 - Funding Information:
Acknowledgemenrs-Althougthh er esearchd escribedin this articleh as beenf oundedi n part by a U.S. Environmental ProtectionA gencya greemenitt has not beens ubjectedto the Agency’s review and therefored oes not necessarily reflectt he viewso f the Agency,a nd no otliciale ndorsement shouldb e inferred.P art of the fundingw asp rovidedb y the USDA Forest ServiceN orth Central Forest Experiment Stationa nd the NationalV egetationS urveyR esearchP ro-gram under the National Acid PrecipitationA ssessment Program.P ortionso f this work werea lso supportedb y the Electric Power Researchl nsitutea nd the Departmento f Energy.
PY - 1989
Y1 - 1989
N2 - Methods for analyzing soil, vegetation and sediment samples for total S and handling soil 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 combusion 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.
AB - Methods for analyzing soil, vegetation and sediment samples for total S and handling soil 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 combusion 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.
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U2 - 10.1016/0038-0717(89)90020-5
DO - 10.1016/0038-0717(89)90020-5
M3 - Article
AN - SCOPUS:0024572642
SN - 0038-0717
VL - 21
SP - 119
EP - 123
JO - Soil Biology and Biochemistry
JF - Soil Biology and Biochemistry
IS - 1
ER -