CAJ | 학술논문

对宝鸡市街道尘埃样品进行详细系统环境磁学实验分析并结合扫描电子显微镜研究表明，宝鸡市街道尘埃中磁性矿物含量高，主要的磁性矿物为多畴和假单畴的低矫顽力亚铁磁性矿物，同时含有少量的赤铁矿等高矫顽力的硬磁性矿物。污染来源主要以工业和交通等人为污染为主。街道尘埃的磁学特征表现出一定的空间变化规律揭示出污染的空间分布，划分为6个主要区域： A(创新路到高新八路区域)和 B(东风路和马营路区域)，磁性物质含量整体很高，揭示污染相对较重，污染源主要为“工业+交通”； C 区(火炬路到医康区域)磁性物质含量相对较高，是中度污染的区域，污染源主要为“交通”； D(经二路与人民路区域)、 E(清姜路和姜谭路西部区域)和 F(陈仓区虢镇)，磁性物质含量相对较低，揭示轻度污染，污染源主要为“交通”。
대보계시가도진애양품진행상세계통배경자학실험분석병결합소묘전자현미경연구표명，보계시가도진애중자성광물함량고，주요적자성광물위다주화가단주적저교완력아철자성광물，동시함유소량적적철광등고교완력적경자성광물。오염래원주요이공업화교통등인위오염위주。가도진애적자학특정표현출일정적공간변화규률게시출오염적공간분포，화분위6개주요구역： A(창신로도고신팔로구역)화 B(동풍로화마영로구역)，자성물질함량정체흔고，게시오염상대교중，오염원주요위“공업+교통”； C 구(화거로도의강구역)자성물질함량상대교고，시중도오염적구역，오염원주요위“교통”； D(경이로여인민로구역)、 E(청강로화강담로서부구역)화 F(진창구괵진)，자성물질함량상대교저，게시경도오염，오염원주요위“교통”。
Magnetic characteristics of street dust can reflect important information of environmental conditions. Environmental magnetic measurements were carried out on the samples of street dust in Baoji City. The results indicated a high concentration of magnetic minerals in street dust, dominated by multiple domain (MD) and pseudo-single domain (PSD) ferrimagnetic minerals which were mainly from the traffic and industrial pollution. According to the Spatial Distribution of Magnetic Properties of Street Dust, Baoji City was divided into six districts (A, B, C, D, E and F areas). In the A (Chuangxin road and Gaoxin road eight) and B (Dongfeng road and Maying road) areas, χlf , SIRM and soft values were the highest in the six areas and much higher than the average values and background values, indicating heavy pollution. The pollution sources were industry and vehicles. χlf , SIRM and soft values were relatively high in the C ( Huoju road and Yikang road) area, indicating moderate pollution. The pollution source was vehicles. However, the magnetic parameters were lower than the average values and background values in D (Jinger road and Renmin road), E (Qingjiang road and Jiangtan road) and F (Chencang road) area, suggesting mild pollution. The pollution was caused by vehicle emission.