CAJ | 학술논문

采集澳门地区不同区域大气PM_(10)样品,根据单颗粒图像分析方法分析了PM_(10)的粒径分布,计算了各采样点PM_(10)粒度分布的分形维数,分析讨论了PM_(10)粒度分布分形维数的变化与粒度分布的关系,分析了粒度分布分形维数表征的澳门大气PM_(10)不同采样点、不同季节的粒度整体分布及其影响因素之间的关系.结果表明,澳门地区PM_(10)粒度分布的分形维数在2.05～3.95之间,夏季PM_(10)的粒度分布分形维数(2.88)大于冬季(2.63),表日月夏季PM_(10)的粒度普遍较冬季的细.同一季节不同区域大气PM_(10)的粒度也有较大变化,夏季时,澳门岛的总体颗粒物、矿物颗粒和烟尘颗粒物的分形维数较氹仔岛的偏大,即澳门岛的颗粒物比氹仔岛偏细,而冬季则相反,冬季时,澳门岛的总体颗粒物、矿物颗粒和烟尘颗粒物的分形维数较氹仔岛的偏小.
채집오문지구불동구역대기PM_(10)양품,근거단과립도상분석방법분석료PM_(10)적립경분포,계산료각채양점PM_(10)립도분포적분형유수,분석토론료PM_(10)립도분포분형유수적변화여립도분포적관계,분석료립도분포분형유수표정적오문대기PM_(10)불동채양점、불동계절적립도정체분포급기영향인소지간적관계.결과표명,오문지구PM_(10)립도분포적분형유수재2.05～3.95지간,하계PM_(10)적립도분포분형유수(2.88)대우동계(2.63),표일월하계PM_(10)적립도보편교동계적세.동일계절불동구역대기PM_(10)적립도야유교대변화,하계시,오문도적총체과립물、광물과립화연진과립물적분형유수교감자도적편대,즉오문도적과립물비감자도편세,이동계칙상반,동계시,오문도적총체과립물、광물과립화연진과립물적분형유수교감자도적편소.
PM_(10) samples were collected at different functional domains in Macao. Size distribution of PM_(10) were analyzed based on IA (Image Analysis) of single particle and the fractal dimensions of size distribution (FDSD) values of PM_(10) were calculated. The relationships between variations of FDSD and size distribution of PM_(10) were discussed and the variation of FDSD of PM_(10) at different sampling sites in different seasons and their influencing factors were further investigated. The results indicate that the FDSD of PM_(10) in Macao vary from 2.05 to 3.95, and the FDSD values in summer (2.88) are higher than those in winter (2.63), which shows that the particles collected in summer is finer than those in winter. Size distribution of PM_(10) in different seasons showed a very different regional pattern. The summer samples showed that the FDSD values of the total particulates, mineral particulates and soot aggregates in the Macao Island are all higher than those in the Taipa Island, suggesting that the size of particles in the Macao Island is finer than that in the Taipa Island. In contrast to this, the winter samples showed that the FDSD values of the total particulates, mineral particulates and soot aggregates in the Macao Island are all lower than those in the Taipa Island.