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. 2015 Apr 29;10(4):e0125393. doi: 10.1371/journal.pone.0125393

Table 7. 4,4'-DDT and its breakdown derivative 4,4'-DDE (mg kg-1) under biochar treatments in co-contaminated soil after T = 180 d.

DDE DDT DDE:DDT
Control Soil 0.50 ± 0.06a 3.13 ± 0.26a 0.16 ± 0.03a
350°C BC Amended (1%) 0.45 ± 0.01a 2.10 ± 0.06b 0.21 ± 0.00b
350°C BC Amended (2%) 0.43 ± 0.01a 1.72 ± 0.08b 0.25 ± 0.01b
550°C BC Amended (1%) 0.49 ± 0.01a 2.90 ± 0.32a 0.17 ± 0.02a
550°C BC Amended (2%) 0.47 ± 0.02a 2.17 ± 0.07b 0.22 ± 0.01b

A ratio between DDE:DDT in soil after treatment is also included. Significant errors are listed after the mean with all samples (mean n = 3; ± s.e.). Significant differences are noted by different letters.