中国南海大气降水化学特征
Chemical Characteristics of Precipitation in South China Sea
查看参考文献25篇
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文摘
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利用中国科学院南海海洋研究所"实验3"号船南海海洋断面科学考察2012年夏季航次进行大气降水采样,测定样品pH值和主要阴阳离子浓度,结合TrajStat 软件模拟后向气团轨迹,分析南海夏季大气降水离子化学特征及来源. 结果表明,夏季降水pH平均值为6.3,最小值为5.6. 阴阳离子浓度顺序均分别表现为Cl~->SO_4~(2-)>NO_3~-和Na~+>Mg~(2+)>Ca~(2+)>K~+, Cl~-和Na~+是主要的阴离子和阳离子,浓度平均值分别为2637.5 μeq·L~(-1)和2095.5 μeq·L~(-1),表现出了海洋性大气降水的特征. 7种离子间均表现出良好的线性相关关系,相关系数在0.9以上,说明它们可能具有统一来源; NO_3~-与其他离子的相关系数相对较低,可能NO_3~-具有相对复杂的来源; Ca~(2+)和K~+还可能跟南海珊瑚环境有关. 本研究的6个站位后向轨迹显示,水汽气团来源于正南或西南方向,未经过大陆上空,因此本研究中南海夏季大气降水的离子来源受人为影响可以忽略. |
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其他语种文摘
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Rainwater samples were collected in the summer on "Shiyan 3" during the 2012 South China Sea Sectional Scientific Survey. The concentrations of anion and cation, and pH in precipitation were determined and backward trajectories of air mass were simulated to analyze the chemical characteristics of ions and examine the source of ions. The results indicated that the mean pH value of precipitation was 6.3, with 5.6 of minimal value in summer in South China Sea. The order of anion and cation abundance was Cl~->SO_4~(2-)>NO_3~- and Na~+>Mg~(2+)>Ca~(2+)>K~+. Cl~- was the major anion and Na~+ was the major cation, with concentrations of 2 637.5 μeq·L~(-1) and 2 095.5 μeq·L~(-1), respectively, showing that they were the characteristics of marine atmospheric precipitation. There was a good linear relationship between each pair of 7 ions, with correlation coefficient above 0.9, suggesting that they may have a common source. However, the correlation coefficients were lower between NO_3~- and other ions than the others, suggesting that NO_3~- had more complex sources. The concentrations of Ca~(2+) and K~+ in precipitation may be related to coral environment in South China Sea. The backward trajectories in 6 stations showed that the air mass was from south and southwest of South China Sea, without passing through above the continent. These results suggested that precipitation affected by human ion source can be ignored in summer in South China Sea. |
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来源
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环境科学
,2014,35(2):475-480 【核心库】
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关键词
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南海
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化学组成
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大气降水
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来源
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后向轨迹
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地址
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中国科学院南海海洋研究所, 热带海洋环境国家重点实验室, 广州, 510301
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中国科学院广州地球化学研究所, 同位素地球化学国家重点实验室, 广州, 510640
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中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550002
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0250-3301 |
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学科
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环境科学基础理论 |
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基金
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国家自然科学基金项目
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文献收藏号
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CSCD:5043865
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参考文献 共
25
共2页
|
|
1.
Ceron R M. Chemical composition of precipitation at Coastal and Marine sampling sites in Mexico.
Global NEST Journal,2005,7(2):212-221
|
被引
1
次
|
|
|
|
|
2.
Baker A R. Dry and wet deposition of nutrients from the tropical Atlantic atmosphere: Links to primary productivity and nitrogen fixation.
Deep Sea Research Part Ⅰ: Oceanographic Research Papers,2007,54(10):1704-1720
|
被引
11
次
|
|
|
|
|
3.
肖红伟. 贵阳大气降水化学特征及来源分析.
中国环境科学,2010,30(12):1590-1596
|
被引
45
次
|
|
|
|
|
4.
肖红伟. 典型污染城市9 d连续大气降水化学特征:以贵阳市为例.
环境科学,2010,31(4):865-870
|
被引
13
次
|
|
|
|
|
5.
宋薇. 大气气溶胶光学厚度遥感研究概况.
干旱气象,2007,25(3):76-81
|
被引
3
次
|
|
|
|
|
6.
Balasubramanian R. Chemical characterization of aerosols in the equatorial atmosphere over the Indian Ocean.
Atmospheric Environment,2013,78:268-276
|
被引
2
次
|
|
|
|
|
7.
徐新华. 海洋气溶胶对沿海地区降水组成的贡献.
上海环境科学,1997,16(10):12-14
|
被引
2
次
|
|
|
|
|
8.
高原. 沿海海—气界面的化学物质交换.
地球科学进展,1997,12(6):553-563
|
被引
23
次
|
|
|
|
|
9.
Galloway J N. Acid precipitation in the northeastern United States: pH and acidity.
Science,1976,194(4266):722-724
|
被引
10
次
|
|
|
|
|
10.
刘昌岭. 大气中微量元素的沉降对海洋生态系统的影响.
海洋通报,2003,22(2):89-96
|
被引
7
次
|
|
|
|
|
11.
肖辉. 西太平洋热带海域降水化学特征.
环境科学学报,1993,13(2):143-148
|
被引
27
次
|
|
|
|
|
12.
叶小峰. 东亚地区降水离子成分时空分布及其特征分析.
气候与环境研究,2005,10(1):115-123
|
被引
20
次
|
|
|
|
|
13.
吴玉霞. 东海海域春季降水的化学特征.
环境科学学报,1998,18(4):362-366
|
被引
7
次
|
|
|
|
|
14.
吴兑. 西沙永兴岛降水的酸度及其化学组成.
气象学报,1989,47(3):381-384
|
被引
11
次
|
|
|
|
|
15.
吴兑. 西沙群岛旱季小阵雨的酸度及化学成分.
气象,1990,16(9):18-22
|
被引
6
次
|
|
|
|
|
16.
牛彧文. 深圳大气降水的化学组成特征.
环境科学,2008,29(4):1014-1019
|
被引
45
次
|
|
|
|
|
17.
Galloway J N. The composition of precipitation on Amsterdam island, Indian Ocean.
Atmospheric Environment (1967),1984,18(12):2649-2656
|
被引
5
次
|
|
|
|
|
18.
Galloway J N. The composition of western Atlantic precipitation using shipboard collectors.
Journal of Geophysical Research: Oceans (1978-2012),1983,88(C15):10859-10864
|
被引
2
次
|
|
|
|
|
19.
于晓岚. 中国南极长城站1998年大气降水化学特征的初步研究.
气象学报,2002,60(4):494-501
|
被引
5
次
|
|
|
|
|
20.
Pio C A. Seasonal and air-mass trajectory effects on rainwater quality at the south-western European border.
Atmospheric Environment, Part A. General Topics,1991,25(10):2259-2266
|
被引
2
次
|
|
|
|
|
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