A method for quantitative analysis of aquatic humic substances in clear water based on carbon concentration.
Aquatic humic substances (AHSs) are major constituents of dissolved organic matter (DOM) in freshwater, where they perform a number of important ecological and geochemical functions, yet no method exists for quantifying all AHSs.  We have developed a method for the quantitative analysis of AHSs based on their carbon concentration.  Our approach includes: (1) the development of techniques for clear-water samples with low AHS concentrations, which normally complicate quantification; (2) avoiding carbon contamination in the laboratory; and (3) optimizing the AHS adsorption conditions.
Graduate School of Science and Technology, Kobe University, Hyogo 657–8501, Japan.
Kumiko
K
Tsuda
Akihiro
A
Takata
Hidekado
H
Shirai
Katsutoshi
K
Kozaki
Nobuhide
N
Fujitake
D000327:Adsorption; D002244:Carbon / Q000032:analysis*; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D006812:Humic Substances / Q000032:analysis*; D014867:Water / Q000737:chemistry*
D006812:Humic Substances; D014867:Water; D002244:Carbon