Transformation and Degradation

There is no information available that suggests that particulate boron compounds are transformed or degraded in the atmosphere.

Elemental boron is inert in the presence of water. Boron compounds rapidly transform to borates, the naturally occurring form of boron, in the presence of water. No further degradation is possible.

Borate and boric acid are in equilibrium depending only on the pH of the water. If dissolved in atmospheric water, the standard borate-boric acid equilibria are established.

Most boron compounds are transformed to borates in soil due to the presence of moisture. Borates themselves are not further degraded in soil. However, borates can exist in a variety of forms in soil (see Section 5.2.3). Borates are removed from soils by water leaching and by assimilation by plants.

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