CAJ | 학술논문

为研究陆源输入对中国近海大气气溶胶的影响,于2007年春季和秋季对山东半岛南部近海进行气溶胶采集工作.分析结果表明气溶胶水溶性离子中主要无机离子无显著的季节性变化,其中二次离子(nss-SO2-4,NO-3,NH+4)浓度最高,占总测定离子浓度的80%以上.甲磺酸离子浓度春季明显高于秋季,分别为(0.041±0.022)和(0.012±0.003 1)μg·m-3,导致生源硫酸盐对非海盐硫酸盐的贡献率分别为4.5%和1.5%;另一方面海盐源硫酸盐分别占总硫酸盐浓度的3.3%和3.9%,以上结果表明人为输入源占山东近海大气气溶胶中硫酸盐来源的主要部分.春季与秋季气溶胶中nss-SO2-4/NO-3值分别为1.43和1.34,反映出近年来中国大气中SO2/NOx呈现出下降趋势.由此可见,来自陆源的人为活动输送导致山东南部近海大气气溶胶的化学组成呈现出明显的陆源特征.
위연구륙원수입대중국근해대기기용효적영향,우2007년춘계화추계대산동반도남부근해진행기용효채집공작.분석결과표명기용효수용성리자중주요무궤리자무현저적계절성변화,기중이차리자(nss-SO2-4,NO-3,NH+4)농도최고,점총측정리자농도적80%이상.갑광산리자농도춘계명현고우추계,분별위(0.041±0.022)화(0.012±0.003 1)μg·m-3,도치생원류산염대비해염류산염적공헌솔분별위4.5%화1.5%;령일방면해염원류산염분별점총류산염농도적3.3%화3.9%,이상결과표명인위수입원점산동근해대기기용효중류산염래원적주요부분.춘계여추계기용효중nss-SO2-4/NO-3치분별위1.43화1.34,반영출근년래중국대기중SO2/NOx정현출하강추세.유차가견,래자륙원적인위활동수송도치산동남부근해대기기용효적화학조성정현출명현적륙원특정.
Aerosol sampling was carried out over the southern coastal area of Shandong Peninsula in spring and autumn 2007 to investigate the influence of continental input on the aerosol compositions. No significant seasonal variations occurred as for the major inorganic water-soluble ionic species; the major fraction of the total analyzed ionic species were the secondary ionic species(nss-SO2-4, NO-3, NH+4) which occupied more than 80% of the mass concentration. The average concentration of methanesulfonic acid in spring was significantly higher than in autumn, which were(0.041±0.022) and(0.012±0.0031) μg·m-3, respectively, resulting in the contributions of biogenic SO2-4 to the nss-SO2-4 to be 4.5% and 1.5%, respectively; on the other hand, the sea-salt SO2-4 contributed to 3.3% and 3.9% of the total SO2-4, all of which showed that the anthropogenic sources occupied the major part of the total SO2-4 in the atmospheric aerosols over the southern coastal areas of Shandong Peninsula. Mass ratios of nss-SO2-4/NO-3 in spring and autumn were 1.43 and 1.34, respectively, reflecting a decreasing trend of SO2/NOx in China.