M/S ratio seems to have a lower impact on extraction yield of
WSE than Te, since identical curves were obtained at 130 C for
all M/S, with the only exception for the M/S = 1/10 g/mL curve,
which has a bit lower values of extraction yield throughout
the whole process. It seems that for the applied M/S range, higher
M/S increases the overall yield of WSE, but only by moderate
amounts.