| 21. | Humic acids and fulvic acids, which begin as raw organic matter, are important constituents of humus.
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| 22. | These organic acids are mainly humic substances, which can be categorized into fulvic and humic acid fraction.
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| 23. | These organic acids are mainly humic substances, which can be categorized into fulvic and humic acid fraction.
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| 24. | Heat is used to increase the solubility of humic acids and hence more potassium humate can be extracted.
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| 25. | Direct methylation of mercury can also occur by reaction with humic and fulvic acids in DOM .-->
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| 26. | As a result, the water entering the river tends to be acidic and often coloured brown with humic acids
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| 27. | Other organic constituents include vitrinite and inertinite, which are macerals derived from the humic matter of land plants.
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| 28. | The museum contains an archeological collection with finds from the excavation at L�nne including textile remnants and humic mulch.
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| 29. | It is also a part of the humic substances, which are the major organic constituents of soil humus.
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| 30. | Liquid chromatography and liquid-liquid extraction can be used to separate the components that make up a humic substance.
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