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. 2018 Aug 1;13(8):e0200574. doi: 10.1371/journal.pone.0200574

Fig 2. Production rates of CH4 and C2H4 from virgin LDPE pellets exposed to sunlight in air.

Fig 2

Mean production rates of CH4 (A) and C2H4 (B) from LDPE virgin pellets incubated in air under ambient solar radiation for 1, 3, 9 and 17 days. The error bars represent the standard deviation of triplicate samples. The emission of CH4 in the dark treatment was below the detection limit and less than 0.3 nmol g-1d-1 for C2H4. The black arrow indicates the production rate of CH4 and C2H4 from virgin LDPE pellets incubated in MilliQ water for 14 days (Fig 1).