摘要
于2010年春季,在台湾省北部东海海域彭佳屿岛采集了60个总悬浮颗粒(TSP)样品,用离子色谱测定了8种水溶性离子(Na^+、Mg^(2+)、Ca^(2+)、K^+、NH_4^+、Cl^-、SO_4^(2-)和NO_3^-)浓度.结合HYSPLIT气团后向轨迹模型、离子化学计量学关系、离子相关性分析和主成分分析,探讨了彭佳屿岛春季TSP中水溶性离子的主要来源.结果表明:彭佳屿岛春季TSP中水溶性离子质量浓度顺序依次为SO_4^(2-)(7.70±4.53)μg/m^3>Cl^-(6.17±3.85)μg/m^3>Na^+(4.59±2.28)μg/m^3>NO_3^-(4.24±3.07)μg/m^3>NH_4^+(1.53±1.20)μg/m^3>Ca^(2+)(0.95±1.47)μg/m^3>Mg^(2+)(0.59±0.30)μg/m^3>K^+(0.31±0.17)μg/m^3.其中Cl-、Na+和Mg^(2+)全部来源于海洋源;K^+来源较多,除了海洋源外,煤和生物质燃烧以及陆源矿物等都可能是彭佳屿岛春季TSP中K^+的来源;60%的Ca^(2+)来源于当地的建筑粉尘;77%的SO_4^(2-)源于煤和生物质燃烧释放;NO_3^-主要源于汽车尾气、煤和生物质燃烧等释放;NH_4^+主要来源于二次气溶胶和生物质燃烧等.通过整合本研究与前人的观测,发现在春季从中国东北至西北太平洋开阔海域,TSP中Cl-、Na+和Mg^(2+)的浓度在空间上呈现逐渐升高趋势,而Ca^(2+)、K^+、NH_4^+、SO_4^(2-)和NO_3^-的浓度在空间上呈现逐渐下降趋势,显示了TSP中不同水溶性离子在海洋大气传输过程中的空间变化特征.
In spring of2010,sixty total suspended particulate(TSP)samples we collected in Pengjia Islet,northern sea of Taiwan,China.The concentrations of water-soluble ions(Na+,Mg2+,Ca2+,K+,NH4+,Cl-,SO4 2-and NO3-)in the TSP samples were extracted and then determined using an Ion Chromatography.Using these data,we investigated the sources of water-soluble ions by a multiple-technique analysis combining with the HYSPLIT model,ion stoichiometry,correlation analysis of water-soluble ions and primary component analysis.According to a decreasing order in the average mass concentration,these ions ranked as SO42-(7.70±4.53)μg/m3,Cl-(6.17±3.85)μg/m3,Na+(4.59±2.28)μg/m3,NO3-(4.24±3.07)μg/m3,NH4+(1.53±1.20)μg/m3,Ca2+(0.95±1.47)μg/m3,Mg2+(0.59±0.30)μg/m3and K+(0.31±0.17)μg/m3.The sea water was identified as the dominant source for Cl-,Na+and Mg2+.Besides the contribution from the sea salt,the K+had other sources,such as coal and biomass burning,and mineral etc.60%Ca2+came from the local construction dust,while77%SO4 2-originated from coal and biomass burning.The NO3 -dominantly sourced from the vehicle exhaust,coal and biomass burning,while NH4+totally originated from the second inorganic aerosol and biomass burning.By combining our results with previous findings,in spring,the concentrations of Cl-,Na+and Mg2+in TSP increased gradually from the Northeast of China to the Northwest Pacific Ocean;on the contrary,the Ca2+,K+,NH4+,SO42-and NO3 -in TSP decreased gradually.The spatial characteristics of different water-soluble ions in TSP were associated with their long-range transport in the marine boundary layer.
作者
罗笠
高树基
肖化云
肖红伟
王燕丽
LUO Li;GAO Shu-Ji;XIAO Hua-Yun;XIAO Hong-Wei;WANG Yan-Li(Jiangxi Province Key Laboratory of the Causes and Control of Atmospheric Pollution, East China University of Technology, Nanchang 330013, China;State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen 361005, China;School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, China;Chinese Academy for Environmental Planning, Beijing 100012, China)
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2017年第12期4452-4459,共8页
China Environmental Science
基金
国家"973"计划项目(2014CB953702)
国家自然科学基金项目台湾海峡联合基金资助项目(U1305233)
东华理工大学校科技创新团队科研启动基金项目(DHKT2015101)
东华理工大学博士科研启动基金项目(DHBK2016105)
江西省教育厅科技项目(GJJ160580)
关键词
台湾
彭佳屿岛
TSP
水溶性离子
源解析
Taiwan
Pengjia Islet
TSP
water-soluble ions
source apportionment
