Chemical characteristics of wet precipitation at an urban site of Guangzhou, South China

Cao, Yuzhen; Wang, Shaoyi; Zhang, Gan; Luo, Jiying; Lu, Shaoyou

doi:10.1016/j.atmosres.2009.07.004

Cited by 178 publications

(106 citation statements)

References 46 publications

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“…2). These concentrations are unexpectedly higher than those reported for the Lower Silesia Region and rural areas in other countries (Cao et al 2009;Wang and Han 2011 (Fig. 4).…”

Section: Sources and Process Controlling The Chemical Composition Of contrasting

confidence: 46%

“…Strong correlation between mineral forms of nitrogen and sulphate ions is observed in many rainwater studies worldwide (e.g. Plaisance et al 1997;Cao et al 2009;Calvo et al 2010) and usually is interpreted by the authors as a mixing of emissions from different anthropogenic sources. , respectively (Table 1; Supplementary Materials; Fig.…”

Section: Sources and Process Controlling The Chemical Composition Of mentioning

confidence: 99%

“…We are studying here, for the first time in Poland, the δ 15 N(NH 4 + ) in order to trace the origin of nitrogen compounds in precipitation. Principal Component Analysis (PCA) can also provide additional information about processes and sources affecting the overall composition of precipitation (Plaisance et al 1996;Cao et al 2009;Calvo et al 2010). The aim of this study is thus to characterise the processes involved in the genesis of major ions in precipitation in Wroclaw.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Chemical and isotopic interpretation of major ion compositions from precipitation: a one-year temporal monitoring study in Wrocław, SW Poland

et al. 2015

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“…2). These concentrations are unexpectedly higher than those reported for the Lower Silesia Region and rural areas in other countries (Cao et al 2009;Wang and Han 2011 (Fig. 4).…”

Section: Sources and Process Controlling The Chemical Composition Of contrasting

confidence: 46%

Section: Sources and Process Controlling The Chemical Composition Of mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Chemical and isotopic interpretation of major ion compositions from precipitation: a one-year temporal monitoring study in Wrocław, SW Poland

et al. 2015

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“…Many of the published studies on acid rain in China have focused mainly on the elemental constituents and major inorganic ions (e.g. Larssen et al, 2006;Aas et al, 2007;Zhang et al, 2007;Cao et al, 2009). In comparison, studies on the organic acids in precipitation in China have been scant, with recent literatures based only on studies of a few large or industrial cities including Beijing (Hu et al, 2005), Shenzhen (Huang et al, 2010), Hong Kong (Tanner and Law, 2003) and Guiyang .…”

Section: Introductionmentioning

confidence: 99%

Chemical characteristics and sources of organic acids in precipitation at a semi-urban site in Southwest China

Zhang

Lee

Cao

2011

Atmospheric Environment

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“…Except for anthropogenic emissions, the chemical composition of rainwater is mainly affected by sea salts, crustal dust from wind erosion, provided that contributions from volcanic and other natural sources are negligible (Négrel et al 2007). To further derive these fractions, Na and Ca were taken as reference element for seawater and continental crust, respectively (Cao et al 2009). The sea salt fraction (SSF), crust fraction (CF), and anthropogenic fraction (AF) were calculated using the following equations:…”

Section: Source Identification Of Major Ions In Precipitationmentioning

confidence: 99%

Chemical and sulfur isotopic composition of precipitation in Beijing, China

Zhu

Guo

Chen

et al. 2015

Environ Sci Pollut Res

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China is experiencing serious acid rain contamination, with Beijing among the worst-hit areas. To understand the chemical feature and the origin of inorganic ions in precipitation of Beijing, 128 precipitation samples were collected and analyzed for major water-soluble ions and δ 34 S. The pH values ranged from 3.68 to 7.81 and showed a volume weighted average value (VWA) of 5.02, with a frequency of acid rain of 26.8 %. The VWA value of electrical conductivity (EC) was 68.6 μS/cm, which was nearly 4 times higher than the background value of northern China. Ca 2+ represented the main cation; SO 4 2− and NO 3 − were the dominant anion in precipitation. Our study showed that SO 4 2− and NO 3 − originated from coal and fossil fuel combustion; Ca 2+ , Mg 2+ , and K + were from the continental sources. The δ 34 S value of SO 4 2− in precipitation ranged from +2.1 to +12.8‰ with an average value of +4.7‰. The δ 34 S value showed a winter maximum and a summer minimum tendency, which was mainly associated with temperature-dependent isotope equilibrium fractionation as well as combustion of coal with relatively positive δ 34 S values in winter. Moreover, the δ 34 S values revealed that atmospheric sulfur in Beijing are mainly correlated to coal burning and traffic emission; coal combustion constituted a significant fraction of the SO 4 2− in winter precipitation.

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Chemical characteristics of wet precipitation at an urban site of Guangzhou, South China

Cited by 178 publications

References 46 publications

Chemical and isotopic interpretation of major ion compositions from precipitation: a one-year temporal monitoring study in Wrocław, SW Poland

Chemical and isotopic interpretation of major ion compositions from precipitation: a one-year temporal monitoring study in Wrocław, SW Poland

Chemical characteristics and sources of organic acids in precipitation at a semi-urban site in Southwest China

Chemical and sulfur isotopic composition of precipitation in Beijing, China

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