金华市大气降水的化学组成特征及来源解析
Analysis on the Origin and Characteristics of Chemical Composition of Precipitation in Jinhua
查看参考文献25篇
|
文摘
|
对2004年大气降水样品监测资料的综合分析和研究表明,金华市降水样品pH值的分布范围在3.64～6.76之间,降水的酸雨率为79.3%。SO_4~(2-)和NO~-_3是降水中主要的阴离子,分别占降水中阴离子总量的66.1%和21.7%。NH~+_4和Ca~(2+)是降水中含量最高的阳离子,分别占阴离子总量的56.6%和33.4%。降水中这些离子的浓度水平一般比世界上其它地方高,但大大低于国内的北方地区。由于降水中缺乏足够的中和物质,大约76%的降水酸度被NH+4、Ca~(2+)和K~+等碱性成分中和。陆源型离子Ca~(2+)、Mg~(2+)和K~+以及海盐性离子Na~+和Cl~-之间存在明显的相关关系,另外Ca~(2+)和SO_4~(2-)、Mg~(2+)和SO_4~(2-)、Mg~(2+)和NO~-_3以及Mg~(2+)和Cl~-之间也可以观察到比较好的相关关系。土壤和海水的富集系数表明,研究区域的Ca~(2+)和K~+主要来源于岩石/土壤风化,SO_4~(2-)和NO~-_3主要归因于人为活动的影响。 |
|
其他语种文摘
|
A comprehensive study of the chemical composition of wet precipitation was carried out during 2004 in the central of Zhejiang Province,China.All samples were analyzed for pH,electrical conductivity and major ions(F~-,Cl~-,NO~-_3,SO~(2-)_4,K~+,Na~+,Ca~(2+),Mg~(2+) and NH~+_4).pH of individual precipitation events,ranged from 3.64 to 6.76.About 79.3% of the precipitation had a pH of less than 5.60.SO~(2-)_4 and NO~-_3 were the main anions,accounting for 66.1% and 21.7% of the total mass measured anions in precipitation,respectively.NH~+_4 and Ca~(2+) were the main cations,they made up approximately 56.6% and 33.4% of the total mass measured cations,respectively.The concentrations of these main ions were generally high compared to those reported in many other areas around the world,but much lower than that in northern China.The alkaline cations,NH~+_4 and Ca~(2+),acted as acid neutralizers and buffered the acidity of precipitation.The results indicated that about 76% acidity was neutralized by alkaline constituents due to the lack of neutralization in precipitation.Significant correlations were found soil-derived species among Ca~(2+),Mg~(2+) and K~+ and sea-salt species between Na~+ and Cl~-.Other relatively good correlations were observed between Ca~(2+) and SO_(2-)_4,Mg~(2+) and SO~(2-)_4,Mg~(2+) and NO~-_3,Mg~(2+) and Cl~-.Enrichment factor of marine and soil indicated that Ca~(2+) and K~+ came mainly from the terrestrial source,and SO~(2-)_4 and NO~-_3 is mostly attributed to the anthropogenic activities in the studied region. |
|
来源
|
中国环境监测
,2007,23(6):86-92 【扩展库】
|
|
关键词
|
大气降水
;
化学组成
;
酸度
;
中和作用
;
富集系数
|
|
地址
|
1.
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, 贵州, 贵阳, 550002
2.
金华市环境监测中心站, 浙江, 金华, 321000
3.
金华市环境科学研究院, 浙江, 金华, 321000
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1002-6002 |
|
学科
|
环境质量评价与环境监测 |
|
基金
|
浙江省科技计划项目
|
|
文献收藏号
|
CSCD:3140765
|
参考文献 共
25
共2页
|
|
1.
王文兴. 中国降水酸度和离子浓度的时空分布.
环境科学研究,1997,10(2):1-6
|
被引
105
次
|
|
|
|
|
2.
丁国安. 中国酸雨现状及发展趋势.
科学通报,1997,42(2):169-173
|
被引
53
次
|
|
|
|
|
3.
齐立文. 我国低纬度、亚热带地区的降水化学及其雨水酸化趋势分析.
环境科学研究,1994,8(1):12-20
|
被引
1
次
|
|
|
|
|
4.
杨复沫. 2001～2003年间北京大气降水的化学特征.
中国环境科学,2004,24(5):538-541
|
被引
52
次
|
|
|
|
|
5.
汤洁. 瓦里关山降水化学特征的初步分析.
环境科学学报,2000,20(4):420-425
|
被引
61
次
|
|
|
|
|
6.
赵卫红. 福建省酸雨变化趋势及成因.
福建地理,2004,19(4):1-5
|
被引
12
次
|
|
|
|
|
7.
申秀英. 金华市酸雨污染现状特征及成因分析.
农业环境保护,2001,20(1):41-44
|
被引
4
次
|
|
|
|
|
8.
Balasubramanian R. Chemical and statistical analysis of precipitation in Singapore.
Water,2001,130:451-456
|
被引
1
次
|
|
|
|
|
9.
Keene W C. Sea salt correction and interpretation of constituent ratios in marine precipitation.
Journal of Geophysical Research,1986,91:6647-6658
|
被引
78
次
|
|
|
|
|
10.
World Bank.
Blue Skies:China's Environment in a New Century,1997
|
被引
1
次
|
|
|
|
|
11.
Rastogi N. Chemical characteristics of individual rain events from a semi-arid region in India:Three-year study.
Atmospheric Environment,2005,39:3313-3323
|
被引
20
次
|
|
|
|
|
12.
Keene W C. Organic acidity of precipitation of North America.
Atmospheric Environment,1984,18:2491-2497
|
被引
21
次
|
|
|
|
|
13.
Tu J. Trends in chemical composition of precipitation in Nanjing China during 1992-2003.
Atmospheric Research,2005,73:283-298
|
被引
38
次
|
|
|
|
|
14.
Hu G P. Chemical characterization of rainwater at Singapore.
Chemosphere,2003,51:747-755
|
被引
28
次
|
|
|
|
|
15.
Lee B K. Chemical composition of precipitation and wet deposition of major ions on the Korean peninsula.
Atmospheric Environment,2000,34:563-575
|
被引
35
次
|
|
|
|
|
16.
Mouli P C. Rainwater chemistry at a regional representative urban site:influence of terrestrial sources on ionic composition.
Atmospheric Environment,2005,39:999-1008
|
被引
18
次
|
|
|
|
|
17.
Topcu S. Chemical composition of rainwater at EMEP station in Ankara Turkey.
Atmospheric Research,2002,65:77-92
|
被引
10
次
|
|
|
|
|
18.
Avila A. Relationship between precipitation chemistry and meteorological situations at a rural site in NE Spain.
Atmospheric Environment,1999,33:1663-1667
|
被引
15
次
|
|
|
|
|
19.
Ito M. Spatial patterns of precipitation quantity and chemistry and air temperature in the Adirondack region of New York.
Atmospheric Environment,2002,36:1051-1062
|
被引
14
次
|
|
|
|
|
20.
Migliavacca D. Atmospheric precipitation and chemical composition of an urban site Guaiba hydrographic basin Brazil.
Atmospheric Environment,2005,39:1829-1844
|
被引
30
次
|
|
|
|
|
了解气象卫星更多信息，请访问