Objective To investigate prevalence and analyze risk factors of arteriosclerosis obliterans of lower limbs in people aged above 60 years from a community of Xinshi District in Urumqi.
目的调查乌鲁木齐市新市区社区60岁以上人群下肢动脉硬化闭塞症的患病情况，并分析其相关危险因素。
The result showed that the major source of 16 PAHs in Urumqi Xinshi district was coal_bustion and vehicle discharges.
结果表明，乌鲁木齐市新市区大气中由于汽车尾气排放和煤的燃烧造成的多环芳烃污染均存在。
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