Fig. 6. (a) The contents of carboxylic acids and phenolic compounds in leaf bio-oil
as a function of pyrolysis temperature. (b) The comparison of the contents of
carboxylic acids in leaf bio-oil obtained by titration and GC–MS as a function of
pyrolysis temperature. (c) The comparison of the content of phenolic compounds in
leaf bio-oil obtained by titration and GC–MS as a function of pyrolysis temperature.