6 research outputs found
Distribution behavior of polycyclic aromatic hydrocarbons in roadside soil at traffic intercepts within developing cities
A study of polycyclic aromatic hydrocarbons pollution in roadside soil
was conducted in developing city environment of northern India during
autumn and winter season to ascertain the contamination levels and
their distribution behavior in soil. The concentration of polycyclic
aromatic hydrocarbons was determined at ten locations of Jalandhar
city, Punjab in India at 1, 2 and 3 m distances from roadside in soil
covering all the major traffic intercepts within city. The samples were
extracted in acetone and dichloromethane (1:1) using soxhlet
extraction. The extracts were then filtered on a silica gel micro
column to remove impurities and elute was subjected to GC-FID. The
total average concentration (city average) was found to be 4.04
μg/g and 16.38 μg/g during winter and autumn respectively.
DiBenzo (ah) Anthracene and Benzo (a) Pyrene were the individual
polycyclic aromatic hydrocarbons found in highest concentration at all
the intercepts ranging between 0.008 to 28.4 μg/g during winter
and 0.01 to 252.55 μg/g during autumn. Average concentration of
non-carcinogenic and carcinogenic polycyclic aromatic hydrocarbons
during winter and autumn was found to be 2.1 and 6.4 and 4.74 and 35.08
μg/g respectively. The average ratio of non-carcinogenic and
carcinogenic Polycyclic Aromatic Hydrocarbons was found to be 1:3
during winter, and 1:7.6 during autumn at most of the intercepts. Total
carcinogenic polycyclic aromatic hydrocarbons concentration was found
quite high (80 %) in comparison to non-carcinogenic polycyclic aromatic
hydrocarbons (20 %) at most of the intercepts