Yeung Z L L, Kwok R C W, Yu K N
Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Kowloon, Hong Kong.
Appl Radiat Isot. 2003 Mar;58(3):339-46. doi: 10.1016/s0969-8043(02)00351-2.
Street dust samples have been collected in different areas in Hong Kong associated with various levels of traffic and pedestrian flow, and the concentrations of 23 chemical elements have been determined using energy dispersive X-ray fluorescence (EDXRF). The 23 studied elements were Na, Al, Si, Cl, Ti, Ba, V, Cr, Mn, Fe, Co, K, Ca, Ni, Cu, Zn, As, Pb, Rb, Sr, Y, Zr and Sn. A profile for average street dust for Hong Kong has been determined by taking average values for different areas. The values for the Hong Kong street dust are commensurate with the values derived in previous investigations or for other countries, except that Hong Kong street dust has much higher Cl, Ca and As concentrations. A factor analysis gives four sources for the street dust in Hong Kong: namely, mixture of metallic dust and crustal material, vehicles, road pavement materials, and mixture of marine aerosols and crustal material.
在香港不同地区采集了与不同交通流量和行人流量相关的街道灰尘样本，并使用能量色散X射线荧光光谱法（EDXRF）测定了23种化学元素的浓度。所研究的23种元素为钠、铝、硅、氯、钛、钡、钒、铬、锰、铁、钴、钾、钙、镍、铜、锌、砷、铅、铷、锶、钇、锆和锡。通过取不同地区的平均值确定了香港街道灰尘的平均概况。香港街道灰尘的值与先前调查或其他国家得出的值相当，但香港街道灰尘中的氯、钙和砷浓度要高得多。因子分析得出香港街道灰尘有四个来源：即金属灰尘与地壳物质的混合物、车辆、路面材料以及海洋气溶胶与地壳物质的混合物。
