Premium
Extraction of Soil Solution Using a Simple Centrifugation Method for Pesticide Adsorption‐Desorption Studies
Author(s) -
Dao T. H.,
Lavy T. L.
Publication year - 1978
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1978.03615995004200020035x
Subject(s) - soil water , centrifugation , desorption , adsorption , water content , extraction (chemistry) , chemistry , pesticide , soil science , water potential , chromatography , environmental chemistry , centrifugal force , moisture , soil test , environmental science , geotechnical engineering , agronomy , mathematics , geology , flow (mathematics) , geometry , organic chemistry , biology
A simple and rapid centrifugation technique has been devised to extract small samples of soil solution from moist pesticide‐treated soils to allow measurement of the pesticide equilibrium concentration. Energy status of the soil water extracted was characterized by correlating the amount of centrifugal force applied, soil moisture content, and matric potential. By varying the size of soil samples and the centrifugal force applied, a sizable volume of soil solution (40 to 53% of the moisture content at or below 0.3 bar suction) was obtained from the soil. The pesticide equilibrium concentration of the soil solution remained relatively constant throughout the centrifugation process.