With the exception of Cu, whose emissions remained
roughly stable over the years (− 4.6%; 2013 compared
to 1990), reductions over the period 1990 to 2013 are
also reported for other HMs (As − 68%, Cr − 74%, Ni
− 71, Se − 22% and Zn − 42%). The decrease was − 62%
for total PAHs