气候变化领域集成服务门户(CCPortal): 不同处理方法对降水中污染元素来源评估的不确定性讨论---以西藏拉萨和纳木错为例

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	不同处理方法对降水中污染元素来源评估的不确定性讨论---以西藏拉萨和纳木错为例
	韩小文 1; 陈鹏飞 2; 康世昌 3; 严芳萍 4; 胡召富 5; 高少鹏 6; 李潮流 7
发表日期	2018
ISSN	0254-6108
卷号	37 期号:1 页码:19-24
英文摘要	In general,two different treatment methods were used in tracing heavy metal elements in precipitation: acidifying precipitation samples before and after filtration. Consequently,different results will be obtained and ultimately impact the interpretation of elemental sources. To investigate this issue,fifteen elements of 24 precipitation samples collected at Lhasa (a typical urban area) and Nam Co (a typical background area) of the Tibetan Plateau were analyzed by the above two methods. The results showed that elemental concentrations of the filtered samples were significantly lower than those without filtration. For instance,the concentrations of Al and Fe in the precipitation samples of Lhasa without filtration were 50 and 20 times higher than those of the filtered samples, respectively, reflecting Al and Fe mainly existed in the particle phase. Correspondingly, concentrations of typical polluted elements such as Cu,Zn and Cd in the two sets of precipitation samples were close,indicating these elements mainly existed in the dissolved phase. Similar phenomenon was also found in Nam Co precipitation samples. Because of the above reasons,the enrichment factors of most studied elements (such as Ni,Zn and Cd) of filtered samples were much higher than those without filtration at both studied sites. Therefore,filtered samples will lead to higher enrichment factors of typical polluted elements,resulting in overestimation of the contribution of human activities on these elements. Therefore,it is proposed that more reasonable results can be obtained from samples without filtration than those of filtered ones.
英文关键词	precipitation;trace metals;enrichment factor;the Tibetan Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology
来源期刊	环境化学
来源机构	中国科学院西北资源环境生态研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/89576
作者单位	1.中国科学院青藏高原研究所;;中国科学院大学, 中国科学院青藏高原地表过程与环境变化重点实验室;;, ;;, 北京;;北京 100101;;100049, 中国;; 2.中国科学院西北生态环境资源研究院, 冰冻圈科学国家重点实验室, 兰州, 甘肃 730000, 中国;; 3.中国科学院西北生态环境资源研究院;;中国科学院青藏高原地球科学卓越创新中心;;中国科学院大学, 冰冻圈科学国家重点实验室;;中国科学院青藏高原地球科学卓越创新中心;;, 兰州;;;;, ;;北京;;北京 730000;;100101;;100049;; 4.芬兰拉彭兰塔理工大学绿色化学实验室, 米凯利, 50130;; 5.中国科学院西北生态环境资源研究院;;中国科学院大学, 冰冻圈科学国家重点实验室;;, 兰州;;, ;;北京 730000;;100049;; 6.中国科学院青藏高原研究所, 中国科学院青藏高原地表过程与环境变化重点实验室, 北京 100101, 中国;; 7.中国科学院青藏高原研究所;;中国科学院青藏高原地球科学卓越创新中心, 中国科学院青藏高原地表过程与环境变化重点实验室;;中国科学院青藏高原地球科学卓越创新中心, ;;, 北京;;北京 100101;;100101, 中国
推荐引用方式 GB/T 7714	韩小文,陈鹏飞,康世昌,等. 不同处理方法对降水中污染元素来源评估的不确定性讨论---以西藏拉萨和纳木错为例[J]. 中国科学院西北资源环境生态研究院,2018,37(1):19-24.
APA	韩小文.,陈鹏飞.,康世昌.,严芳萍.,胡召富.,...&李潮流.(2018).不同处理方法对降水中污染元素来源评估的不确定性讨论---以西藏拉萨和纳木错为例.环境化学,37(1),19-24.
MLA	韩小文,et al."不同处理方法对降水中污染元素来源评估的不确定性讨论---以西藏拉萨和纳木错为例".环境化学 37.1(2018):19-24.