What is a key difference noted in the persistence of chlorinated solvents compared to common, fast-degrading herbicides?
Answer
Degradation of solvents can be halted if necessary soil microorganisms are absent or inactive
While chlorinated solvents *can* degrade, the necessary soil microorganisms might be absent or inactive, or the contaminant might be locked away in soil micropores, effectively halting the degradation process for very long periods.
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