ANALYSIS OF FACTORS EFFECTING LEAD POLLUTION IN URBAN ENVIRONMENT OF CHINA
我国大城市环境铅污染影响因素分析

Grey theory was applied to analyze the factor effecting the lead pollution of urban area.Four cities of Wuhan,Lanzhou,Changchun and Qingdao were taken as points of a space ar-ray,average lead contents of surface soils, plants and residents' hair were gathered as refer-ence factors. Average annual consumption of fuel oil and coal,discharge of lead,and rele-vant meteorological factors were selected as contrast factors. The matrix of grey relationalgrade show that most effective factors on lead pollution in urban environment are averageannual consumption of fuel oil and coal,relative humidity,and discharge of coal ash.A-mong those, the annual consumption of fuel coal and oil is the most effective factor effectinglead content in soil and residents' hair respectively. Relative humidity is most significantlycorrelated to lead content in plants. Potential impact of lead in antiknock gasoline to humanhealth can also be confirmed.