Analysis of a decade of Asian outflow of PM10 and TSP to Gosan, Korea; also incorporating Radon–222

Developmental Biology

Jagoda Crawford²  Chang-Hee Kang¹  Won-Hyung Kim¹  Alan Griffiths²  Scott Chambers² 

[1] Department of Chemistry, Jeju National University, Jeju 690–756, Republic of Korea$$;Australian Nuclear Science and Technology Organization, Locked Bag 2001 Kirrawee DC NSW 2232, Australia$$

关键词: PM10;    total suspended matter;    radon;    Asian outflow;    potential source contribution function;   

DOI  :  10.5094/APR.2015.059

学科分类：农业科学（综合）

来源: Dokuz Eylul Universitesi * Department of Environmental Engineering

【 摘 要 】

Ten years of aerosol and Radon–222 (radon) data from Gosan, Korea, were analyzed. Seasonal cycles were strongly linked to changes in fetch and time of year. We estimated that 7.21 t/m y of PMio aerosol pass Gosan in the atmospheric boundary layer, increasing annually by 0.3 t/m y. Contributions to aerosol loading were characterized by fetch: South China, North China, Korea and Japan. While the highest, and most variable, contributions typically originated from South China, these air masses contributed to only 6% of the overall dataset. PM₁₀ distributions were broader from South and North China than for Korea or Japan, reflecting differences in natural/anthropogenic soil sources, and number/distribution of large point sources. Employing radon to select air masses more representative of targeted fetch regions typically resulted in greater reported pollutant concentrations and rates of change over the decade. Estimated rates of PM₁₀ increase from North China and Korea over the decade were 1.4 and 0.9 μg/m³ y, respectively. Total suspended particulate (TSP) elemental analysis indicated that the (non–sea–salt) nss–SO₄²⁻ content of aerosols has been gradually increasing over the past decade and more recently an increase in NO₃⁻ was seen. However, on average, rates of increase in nss–SO₄²⁻ have reduced since 2007, which were higher in South than North China.

【 授权许可】

Unknown   

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