Because this decrease reached an equilibrium state in which
PAH4 content at infinite time (c1) was not equal to zero, this
decrease can be described by a kinetic Eq. (1) derived for cylinder
shaped food product by Šimko, Šimon, and Belajová (2004)
ct ¼ c1 þ c0 c1 ð ÞX
1
n¼1
4
a2a2n
exp Da2n
t ð1Þ
where c0, ct and c1 are the initial concentration, concentration at
time t and equilibrium concentration, a is the radius of the cylinder,
an were taken from tables (Abramowitz & Stegun, 1964), D is the
diffusion coefficient and t is the time of LDPE/sausage interaction.