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Effect of ultrasonic power on soil organic carbon fractions
Author(s) -
Poeplau Christopher,
Don Axel
Publication year - 2014
Publication title -
journal of plant nutrition and soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 1436-8730
DOI - 10.1002/jpln.201300492
Subject(s) - fractionation , ultrasonic sensor , dispersion (optics) , soil science , power (physics) , total organic carbon , mass fraction , environmental science , chemistry , mineralogy , materials science , analytical chemistry (journal) , environmental chemistry , composite material , thermodynamics , chromatography , acoustics , physics , optics
Ultrasonic dispersion is a prevalent tool for soil fractionation. It is widely ignored that variation in ultrasonic power might lead to significantly different dispersion. We evaluated the effect of power variation with constant energy on the fine fraction mass, its organic C content and quality. All parameters increased significantly with power. The term “stable aggregates” as used in fractionation schemes cannot be defined by ultrasonic energy alone but power needs to be standardized, too.