【摘要】：于2015年春、夏季,在天津市選取4條不同等級道路進(jìn)行路邊空氣顆粒物(PM_(2.5)和PM_(10))采集,并分析其中16種無機(jī)元素.結(jié)果表明,春季PM_(2.5)和PM_(10)的平均濃度顯著高于夏季.路邊環(huán)境中PM_(2.5)/PM_(10)低于非路邊環(huán)境中空氣顆粒物比值,且次干道和快速路分別在PM_(2.5)和PM_(10)中污染最嚴(yán)重.元素濃度分析顯示,PM_(2.5)和PM_(10)中Si、Al、Ca等地殼元素濃度最高,次干道和快速路受人為元素影響較大,外環(huán)路所受影響較小;富集因子(PM_(2.5)和PM_(10))分析結(jié)果顯示,Pb、Zn、Cu、Sb、Sn和Cd的EF10,是路邊環(huán)境中富集程度較高的元素.通過Kruskal-Wallis H檢驗(yàn),PM_(2.5)中各元素富集因子在4條道路上存在顯著性差異,次干道受機(jī)動(dòng)車污染較嚴(yán)重.PM_(2.5)和PM_(10)中因子分析結(jié)果有一定差異,PM_(2.5)分析結(jié)果顯示采樣期間該區(qū)域主要污染源有開放源(土壤塵、揚(yáng)塵、道路塵及建筑塵)、機(jī)動(dòng)車排放源(尾氣和非尾氣源)、燃燒源和工業(yè)源,其中機(jī)動(dòng)車排放源在人為源污染中占比最高.
[Abstract]:In spring and summer of 2015, four different grades of roads were selected in Tianjin to collect roadside air particles (PM_ (2.5) and PM_ (10), and 16 inorganic elements were analyzed. The results showed that the average concentrations of PM_ (2.5) and PM_ (10) in spring were significantly higher than those in summer. The ratio of PM_ (2.5) / PM_ (10) in roadside environment was lower than that in non-roadside environment, and the pollution of subtrunk road and expressway was the most serious in PM_ (2.5) and PM_ (10), respectively. The results of elemental concentration analysis showed that the concentration of Si,Al,Ca and other crust elements in PM_ (2.5) and PM_ (10) was the highest, the secondary trunk road and expressway were greatly affected by artificial elements, but the outer loop was less affected. The results of enrichment factor (PM_) and PM_ (10) analysis showed that the EF10, of Pb,Zn,Cu,Sb,Sn and Cd was the element with high enrichment in roadside environment. Through Kruskal-Wallis H test, there were significant differences in the enrichment factors of each element in PM_ (2.5) on four roads, and the secondary main roads were seriously polluted by motor vehicles. The results of factor analysis in PM_ (2.5) and PM_ (10) were different. The results of PM_ (2.5) analysis showed that there were open sources (soil dust, road dust and building dust) in this area during the sampling period. Motor vehicle emission sources (exhaust and non-tail gas sources), combustion sources and industrial sources, among which motor vehicle emission sources account for the highest proportion of man-made sources of pollution.
【作者單位】： 南開大學(xué)環(huán)境科學(xué)與工程學(xué)院城市交通污染防治研究中心;
【基金】：國家科技支撐計(jì)劃項(xiàng)目(2014BAC16B03) 科技部科技基礎(chǔ)性工作專項(xiàng)(2013FY112700-02)
【分類號(hào)】：X513

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 賈佳;郭秀銳;程水源;;APEC期間北京市PM_(2.5)特征模擬分析及污染控制措施評估[J];中國環(huán)境科學(xué);2016年08期

2 陳剛;劉佳媛;皇甫延琦;王海婷;史國良;田瑛澤;朱余;李菁;馮銀廠;;合肥城區(qū)PM_(10)及PM_(2.5)季節(jié)污染特征及來源解析[J];中國環(huán)境科學(xué);2016年07期

3 陳多宏;李梅;黃渤;蔣斌;張濤;江明;謝敏;鐘流舉;畢新慧;呂小明;張干;周振;;區(qū)域大氣細(xì)粒子污染特征及快速來源解析[J];中國環(huán)境科學(xué);2016年03期

4 張曉茹;孔少飛;銀燕;李力;袁亮;李琦;陳魁;;亞青會(huì)期間南京大氣PM_(2.5)中重金屬來源及風(fēng)險(xiǎn)[J];中國環(huán)境科學(xué);2016年01期

5 宋娜;徐虹;畢曉輝;吳建會(huì);張?jiān)７?楊海航;馮銀廠;;�？谑蠵M_(2.5)和PM_(10)來源解析[J];環(huán)境科學(xué)研究;2015年10期

6 姚琳;焦荔;于志勇;;杭州市道路空氣細(xì)顆粒物PM_(2.5)元素組成特征[J];中國粉體技術(shù);2015年02期

7 張霖琳;王超;刀，

本文編號(hào)：2520139