台湾彭佳屿岛春季TSP中水溶性离子源解析

被引:19
作者
罗笠 [1 ,2 ]
高树基 [3 ]
肖化云 [1 ,2 ]
肖红伟 [1 ,2 ]
王燕丽 [4 ]
机构
[1] 东华理工大学江西省大气污染成因与控制重点实验室
[2] 东华理工大学水资源与环境工程学院
[3] 厦门大学近海海洋环境国家重点实验室
[4] 环境保护部环境规划院
关键词
台湾; 彭佳屿岛; TSP; 水溶性离子; 源解析;
D O I
暂无
中图分类号
X513 [粒状污染物];
学科分类号
083001 [环境科学];
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+、Mg2+、Ca2+、K+、NH4+、Cl-、SO42-和NO3-)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/m3>K+(0.31±0.17)μg/m3.其中Cl-、Na+和Mg2+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Ca2+来源于当地的建筑粉尘;77%的SO42-源于煤和生物质燃烧释放;NO3-主要源于汽车尾气、煤和生物质燃烧等释放;NH4+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Mg2+的浓度在空间上呈现逐渐升高趋势,而Ca2+、K+、NH4+、SO42-和NO3-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.
引用
收藏
页码:4452 / 4459
页数:8
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