Affiliations: Department of Civil and Structural Engineering, the
Hong Kong Polytechnic University, Hung Hom, Hong Kong, China | Research Center for Eco-Environmental Sciences,
Chinese Academy of Sciences, Beijing 100085, China | Department of Mechanical Engineering, The Hong Kong
University of Science & Technology, Clear Water Bay, Hong Kong, China | Department of Applied Biology and Chemical Technology,
the Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
Abstract: An one-year of sampling aerosol program was carried out during the
period of April 1995 to April 1996 at coastal region, Cape D'Aguilar, in Hong
Kong. The trace element composition of aerosol particles (TSP and
PM_{10}) were measured and analyzed by using the
Instrumental Neutron Activation Analysis (INAA) and Inductive Couple
Plasma-Mass Spectrometry (ICP-MS) techniques. The results showed that the
polluted elements such as: V, Zn, As, Pb, Cd, Sb, I, Se, Bi, with high
enrichment factor (E. F) values, are derived from anthropogenic sources, while
Sc, Al, Fe, Mn, Sm, La, Sr are less than 10 in E. F, these elements are related
the crust and soil. The concentration of the trace elements are present
seasonal variation i.e. summer low and winter high, whereas the V or noncrustal
V(V*) present summer high and winter low, this phenomenon
might be explained by local or regional oil combustion sources. Use three type
of elemental ratio, e.g. La/Sm, Mn*/V*
and Bi/Al indicate that both TSP and PM_{10} of La/Sm ratios
are mainly related to soil and dust,
Mn*/V* are probably represent fossil
combustion and Bi/Al are possibly associated with refuse incineration,
ferromanganese alloys and aluminum production. The varimax rotation factor
analysis for trace elements was performed. By means of the absolute principal
component analysis (APCA) and multiple regression, the contribution of trace
elements to possible sources and overall means of trace elements were
estimated. The results showed that the present station is impacted by the
anthropogenic species, although the quantities are different during the
summertime and wintertime.