The characteristics of automobile catalyst-derived platinum group elements in road dusts and roadside soils: a case study in the Pearl River Delta region, South China
The characteristics of automobile catalyst-derived platinum group elements in road dusts and roadside soils: a case study in the Pearl River Delta region, South China
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道路灰尘和路边土壤中汽车催化剂衍生铂族元素特征——以华南珠三角地区为例
DOI：
10.1007/s12665-010-0635-y
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发表时间：
2011-11
影响因子：
2.8
通讯作者：
Zhao, Zheng
中科院分区：
文献类型：
--
作者：
Hu, Jing;Huang, Yan;Qi, Liang;Zhou, Mei-Fu;Zhao, Zheng
汽车催化转化器排放的铂族元素（PGE）导致城市道路粉尘和路边土壤中铂族元素的富集，远高于自然背景水平。本文对珠江三角洲地区包括深圳、广州和香港三个主要城市的道路粉尘和路边土壤中所有PGE和Au的污染源进行了评价。样品经卡里乌斯管消化，同位素稀释ICP-MS分析；Os采用精馏分离，其余PGE采用te共沉淀法分离。所有样品的PGE浓度都高于未受污染土壤的背景值，并且比其他PGE含有更高的Pt， Pd和Rh。Pt为181 ng/g， Pd为514 ng/g， Rh为53 ng/g， Au为1345 ng/g。Pt与Pd、Pt与Rh、Pd与Rh之间存在明显的正相关关系，说明汽车催化剂中PGE的主要排放源是Pt、Pd和Rh。在香港和深圳的道路尘埃样本中也发现了高浓度的金。氧含量高的粉尘样品的187os /188Os比值较低。来自香港的样品显示相对较高的Pt/Rh比率。在深圳和香港，Pt与Ru、Pt与Ir呈正相关，而在广州，Pt与Ir呈正相关。这些不同的特点反映了香港和中国大陆使用的不同汽车催化系统。
The emission of platinum group elements (PGE) from automobile catalytic converters has led to enrichment of PGE in road dusts and roadside soils in urban areas that are well above the natural background levels. This paper evaluates the source of contamination of all the PGE and Au in road dusts and roadside soils in the Pearl River Delta region, including three major cities, Shenzhen, Guangzhou and Hong Kong, South China. Samples were digested using Carius tube and analyzed by isotope dilution ICP-MS; Os was separated by distillation and other PGE by Te-coprecipitation. All samples have elevated PGE concentrations above the background values of uncontaminated soils and contain higher Pt, Pd and Rh than other PGE. The maximum values are 181 ng/g Pt, 514 ng/g Pd, 53 ng/g Rh and 1345 ng/g Au. There are clear positive correlations between Pt and Pd, Pt and Rh, and Pd and Rh, indicating that the main emitted of PGE from automobile catalyst are Pt, Pd and Rh. High concentrations of Au were also found in road dust samples from Hong Kong and Shenzhen. Dust samples with higher Os contents have lower187Os/188Os ratios. Samples from Hong Kong show relatively high Pt/Rh ratios. Positive correlations between Pt and Ru, and Pt and Ir were found in Shenzhen and Hong Kong, but only positive correlations between Pt and Ir were found in Guangzhou. These different characteristics reflect different automobile catalytic systems used in Hong Kong and mainland China.
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影响因子：
3
作者：
R. Eisler
通讯作者：
R. Eisler
影响因子：
8.9
作者：
B. Sures;S. Zimmermann
通讯作者：
B. Sures;S. Zimmermann
影响因子：
5
作者：
H. Zechmeister;H. Hagendorfer;D. Hohenwallner;A. Hanus-Illnar;A. Riss
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H. Zechmeister;H. Hagendorfer;D. Hohenwallner;A. Hanus-Illnar;A. Riss
影响因子：
3.8
作者：
L. Qi;Mei‐Fu Zhou
通讯作者：
L. Qi;Mei‐Fu Zhou
影响因子：
4.2
作者：
Xue-song Wang;Yong Qin
通讯作者：
Xue-song Wang;Yong Qin