In:
Thermal Science, National Library of Serbia, Vol. 27, No. 3 Part A ( 2023), p. 2065-2073
Abstract:
The non-point source pollution is not easy to be controlled, and it is one of
the important environmental problems facing the world. Taking Hohhot, a
typical city in the arid semi-arid region in China, as an example, four
monitoring sites in the city were selected, water samples from six rainfall
events were collected, and pollutants such as heavy metals, ammonia, nitrate
nitrogen, phosphorus and suspended matter were examined, and the water
quality of the rain runoff was comprehensively evaluated by the principal
component analysis and the correlation analysis. The results showed that the
total phosphorus contents of monitoring points in the street were the
largest and those of monitoring points in gas stations were the smallest in
rainfall runoff. Arsenic, cobalt, and chromium were less than the Class I
standard for environmental quality standards for surface water according to
Chinese standard (GB 3838-2002). Concentrations of cadmium, copper, and
iron were greatest in street monitoring sites, while nickel, lead, and zinc
were greatest in roof monitoring sites, and manganese was greatest in car
park monitoring sites. There was minimal contamination at gas station
monitoring sites and the greatest contamination at street monitoring sites.
Heavy metals and phosphorus were the main contributing factors to pollution
at street monitoring sites, while the main contributing factors at gas
station monitoring sites were total suspended substances.
Type of Medium:
Online Resource
ISSN:
0354-9836
,
2334-7163
DOI:
10.2298/TSCI2303065J
Language:
English
Publisher:
National Library of Serbia
Publication Date:
2023
detail.hit.zdb_id:
2241319-4
