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Figure 1 | Chemical and Biological Technologies in Agriculture

Figure 1

From: Characterization of terrestrial dissolved organic matter fractionated by pH and polarity and their biological effects on plant growth

Figure 1

The analytical scheme utilized to fractionate the whole sample. After acidification, the acid-insoluble and acid-soluble components were isolated and then the acid-soluble portion was fractionated into its hydrophilic C18 filtrate and hydrophobic C18 retentate. The starting dissolved organic carbon and iron contents of the whole sample are given, along with the partitioning of carbon (and iron) between the fractions within each step.

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