Horizontal distribution and levels of heavy metals in the biggest snowstorm ina century in Shenyang, China
AN Jing , ZHOU Qixing , LIU Weitao , REN Liping
DOI:
Received September 13, 2007,Revised November 21, 2007, Accepted , Available online
Volume 20,2008,Pages 846-851
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The horizontal distribution and levels of heavy metals in the biggest snowstorm in Shenyang since 1904 were investigated by
analyzing 4 metals (As, Cd, Pb, and Cu) in a series of ultraclean samples collected from 17 sites distributed in di erent regions of
the Shenyang area, China. The results showed that the concentrations of all the 4 heavy metals in snow from the industrial regions were
high, up to 7.3 (As), 2.2 (Cd), 850.0 (Pb), and 0.197–20.2 (Cu) g/kg, respectively. In the suburb, in contrast, their concentrations were
not detected, except for As. Because of the long-term application of arsenical pesticides and herbicides, As was detected in the snow
samples which collected on the farm. As, Cd, and Pb were also detected in the snow samples collected from the parks, the residential
areas, and the commercial districts mainly by reason of human activities. In a sense, long-term industrial activities, tra c activities,
coal combustion, and agricultural activities a ected the horizontal distribution and levels of these heavy metals in snow di erently.
The data relating to the horizontal distribution and concentrations of heavy metals in the snow under extreme climatic conditions can
provide with a unique snapshot of environmental pollution situation and behaviors in urban areas.
