Chloramination and nutrient monitoring

Humic Matter

Humic matter is the major fraction of the organic content in soil, which is principally the result of digested and decomposed plants and vegetation. At a pH above 2, dissolved humic matter will consist of humic acid and fulvic acid.

Laboratory analysis is described in ChemScan Method Summary #158, Aquatic Humic Substances.

ChemScan Analysis Method

Humic and fulvic acids both have strong uv absorbance signatures. Filtered or settled raw water samples can be analyzed for humic matter using a shared wavelength for analysis and a second wavelength for subtraction of turbidity on the UV-0254 analyzer or using a full spectrum ChemScan analyzer for analysis of the complete uv absorbance signature. Results are shown as DOC (See ChemScan Method Summary #159, Dissolved Organic Carbon and #158, Aquatic Humic Substances). Humic and fulvic acid can also be analyzed with tannic acid as the components of Natural Organic Matter (See ChemScan Method Summary #68).

 

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