FIG 3.

Comparison of the Aroclor 1260 dechlorinating capability of cultures with and without Rpf amendment (TG4 and CG4) in stage 4. Abiotic controls indicating Aroclor 1260 dechlorination in the sterilized soil incubated in parallel. (A) Chloride ion accumulation and the average number of chlorines per biphenyl (Cl/BP) during Aroclor 1260 dechlorination. (B) Changes in the proportion (mol%) of PCBs with different chlorination degrees. The chloride ion and PCBs in cultures were analyzed by ion chromatography and gas chromatography, respectively. Statistical significance is indicated by asterisks. *, P < 0.05; **, P < 0.01; ***, P < 0.001.