干旱区生态环境知识资源中心(Arid): 天气因素对道路灰尘铂族元素累积的影响

Arid

	天气因素对道路灰尘铂族元素累积的影响
其他题名	Influences of weather on PGEs accumulation in road dust
	刘玉燕 1; 刘浩峰 2; 曾何华 1; 张兰 3
来源期刊	中国环境科学
ISSN	1000-6923
出版年	2014
卷号	34 期号:2 页码:289-294
中文摘要	以新疆昌吉市为研究区,探讨了天气因素对道路灰尘铂族元素(PGEs)累积的影响及其作用机制.样品经王水消解后由ICP-MS 测定.结果表明,径流冲刷与风力是道路灰尘中PGEs 迁移转化的主要外力,而降水量与气温是城市道路形成径流的主要影响因素,干旱区降水稀少,更利于灰尘PGEs的累积.各类天气因素对道路灰尘PGEs含量的影响具体表现为:降水量小(12h降水量<5mm),且气温高于0℃以上时的降雪(包含雨夹雪)后PGEs含量上升;降水量大(12h降水量>5mm),且气温高于0℃以上时的降雪(包含雨夹雪)后PGEs含量下降;气温低于0 ℃时,无论降雪量大小,雪后PGEs 含量下降.单场次小雨(12h 降雨量<5mm)后PGEs 含量上升;单场次中雨及其以上降雨(12h 降雨量>5mm)后PGEs含量下降;连续性小雨(12h降雨量<5mm)后PGEs含量上升,其累积达到上限,若继续降小雨,其含量不再升高反而呈缓慢下降趋势.4级以上大风天气后PGEs含量明显下降.
英文摘要	In order to study the characteristics and its mechanism of PGEs acculation in road dusts from different types weather, Changji city was elccted as an example, and samples of road dust were collected and determined by ICP-MS after aqua regia digestion. The results showed that runoff souring and wind strength were the primary external forces, which affected PGEs transport and transfer, while the rainfall and temperature primarily affected the formation of runoff in urban city, poor rainfall in arid area was more beneficial for accumulation of PGEs. Influences of various weather situations on PGEs content in road dust were as follows: the PGEs content increased after small rainfall (12hours rainfall<5mm) and snowfall (contain mix rain and snow) that the temperature was higher than 0℃; and decreased on the same conditions except for rainfall (12hours rainfall>5mm); but always decreased after snowfall, no matter how big, when the temperature was lower than 0℃. After single small rain, single moderate and bigger rain(12hours rainfall>5mm), and continuous small rain, the PGEs contents increased, decreased, and increased respectively, however, when the accumulation achieved top limit, there was no increasing but slow and steady decreasing tendency in continuous small rain. After a wind force 4, the PGEs content decreased significantly.
中文关键词	天气因素 ; 道路灰尘 ; 累积 ; 影响
英文关键词	PGEs weather situations road dust PGEs accumulation influences
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5058988
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232056
作者单位	1.昌吉学院环境科学研究所, 昌吉, 新疆 831100, 中国; 2.新疆昌吉州环境监测站, 昌吉, 新疆 831100, 中国; 3.首都师范大学分析测试中心, 北京 100083, 中国
推荐引用方式 GB/T 7714	刘玉燕,刘浩峰,曾何华,等. 天气因素对道路灰尘铂族元素累积的影响[J],2014,34(2):289-294.
APA	刘玉燕,刘浩峰,曾何华,&张兰.(2014).天气因素对道路灰尘铂族元素累积的影响.中国环境科学,34(2),289-294.
MLA	刘玉燕,et al."天气因素对道路灰尘铂族元素累积的影响".中国环境科学 34.2(2014):289-294.