Fig. 4From: In situ pilot application of nZVI embedded in activated carbon for remediation of chlorinated ethene-contaminated groundwater: effect on microbial communitiesConcentration of dissolved oxygen (a), nitrate (b), total dissolved iron (c) and sulphate (d) 6 days before and after nZVI–AC injection. CMT 1 and 2 = continuous multichannel wells, 14/04 = control monitoring wellBack to article page