A four-year investigation on wet deposition in western Thailand

Panyakapo, Mallika; Onchang, Rattapon

doi:10.1016/s1001-0742(08)62077-x

Cited by 24 publications

(17 citation statements)

References 17 publications

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“…The high level of NH + 4 in Gwangju was comparable to Seoul (with a mean concentration of 66.4 µeq L −1 ; Lee et al, 2000). Wastes from agricultural and domestic activities as well as the use of fertilizers are believed to be the main sources of the emission of gaseous ammonia (Dianwu and Anpu, 1994;Panyakapo and Onchang, 2008). Ca 2+ may originate from wind-blown dust and calcareous soil, Mg 2+ from sea salts and dusts in the atmosphere, while Na + from sea salts.…”

Section: Ionic Composition Of Rainwatermentioning

confidence: 99%

“…This was probably due to dissolution of secondary inorganic aerosols ((NH 4 ) 2 SO 4 and NH 4 NO 3 ) in rainwater (Panyakapo and Onchang, 2008). Among the compounds of ammonium, ammonium sulfate is known to predominate in the atmosphere (Seinfeld, 1986).…”

Section: Novmentioning

confidence: 99%

“…Factor analysis (principal component analysis) has been widely applied in previous studies to investigate the influence of different sources on the chemical components in precipitation Garcia et al, 2006;Panyakapo and Onchang, 2008). A varimax-rotated principal component analysis (PCA) was performed using Minitab version 16 for Windows.…”

Section: Factor Analysismentioning

confidence: 99%

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Confirming anthropogenic influences on the major organic and inorganic constituents of rainwater in an urban area

Chon

Kim

Bae

et al. 2015

Drink. Water Eng. Sci.

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Abstract.Recently, rainwater composition affected by atmospheric pollutants has been the topic of intense study in East Asia because of its adverse environmental and human health effects. In the present study, the chemical composition and organic compounds of rainwater were investigated from June to December 2012 at Gwangju in Korea. The aim of this study is to determine the seasonal variation of rainwater chemical composition and to identify possible sources of inorganic and organic compounds. The volumeweighted mean of pH ranged from 3.83 to 8.90 with an average of 5.78. Of rainwater samples, 50 % had pH values below 5.6. The volume-weighted mean concentration (VWMC) of major ions followed the orderThe VWMC of trace metals decreased in the order Zn > Al > Fe > Mn > Pb > Cu > Ni > Cd > Cr. The VWMCs of major ions and trace metals were higher in winter than in summer. The high enrichment factors indicate that Zn, Pb, Cu, and Cd originated predominantly from anthropogenic sources. Factor analysis (principal component analysis) indicates the influence of anthropogenic pollutants, sea salt, and crustal materials on the chemical compositions of rainwater. Benzoic acids, 1H-isoindole-1,3(2H)-dione, phthalic anhydride, benzene, acetic acids, 1,2-benzenedicarboxylic acids, benzonitrile, acetaldehyde, and acetamide were the most prominent pyrolysis fragments for rainwater organic compounds identified by pyrolysis gas chromatography/mass spectrometry (Py-GC/MS). The results indicate that anthropogenic sources are the most important factors affecting the organic composition of rainwater in an urban area.Published by Copernicus Publications on behalf of the Delft University of Technology.

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Section: Ionic Composition Of Rainwatermentioning

confidence: 99%

Section: Novmentioning

confidence: 99%

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Confirming anthropogenic influences on the major organic and inorganic constituents of rainwater in an urban area

Chon

Kim

Bae

et al. 2015

Drink. Water Eng. Sci.

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“…The water from Nakhon Nayok had a high amount of phosphate, which might be a result of chemical fertilizers and pesticides used in the farm lands. Rain water samples were slightly acidic feasibly because they reacted with gaseous acidic pollutants 22 . Their calcium contents ought to have arrived from contamination of calcium dust pollutants in the atmosphere 23 .…”

Section: Discussionmentioning

confidence: 99%

Minerals in drinking water available in Bangkok, Nakhon Nayok, and Chachoengsao

Lekskulchai¹

2015

ScienceAsia

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ABSTRACT:In this study, drinking water from various sources in Bangkok and two other provinces in Thailand was collected, and its physical properties and mineral content were determined. Water from canals and dug wells contained diverse components making it turbid and coloured. Artesian water from the same province as canal and dug well water had similar mineral content, indicating that pollutants could spread thoroughly. The amount of iron detected in tap water varied from house to house, depending on its plumbing system since it came from corroded aged metal pipelines. The purity and mineral content of some bottled purified and mineral water were identical to that of the tap water. Furthermore, there was phosphate contamination in bottled water, probably from the bottle washing powder. Both local and imported bottled mineral water contained lower amounts of calcium and magnesium than expected, thus they might not be an effective mineral supplement. The high sodium content of sports drinks could make them harmful to health. The perception that bottled water is healthier than tap water should be reconsidered.

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“…2) 4 + in the soil, water, and atmosphere [16]. Importantly, the detection of high Ca 2+ and NH 4 + was found in the agricultural zones of Thailand (i.e., Nakorn Pathom) [17]. Annual wet deposition of SO 4 2-and NO 3 -were high compared to the other charges; perhaps because of combustion, motor vehicle exhaust, and incineration at nearby factories.…”

Section: Rainwater Qualitymentioning

confidence: 94%

Estimation of Rainwater Quality Using GPS-derived Atmospheric Propagation Delay and Meteorological Data

Uang-Aree

Kingpaiboon

Khuanmar

2016

Pol. J. Environ. Stud.

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We investigated GPS-derived atmospheric propagation delays and meteorological data for estimating rainwater quality by creating a regression model using the combinatorial group method of the datahandling algorithm (COMBI GMDH). The dependent variable was the daily wet deposition, while the independent variables were zenith hydrostatic delay, zenith wet delay, daily rainfall, and daily average wind speed. The model had a coeffi cient of determination (R -day. Rainwater quality could be estimated using GPS-derived atmospheric propagation delay (APD) and meteorological data.

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A four-year investigation on wet deposition in western Thailand

Cited by 24 publications

References 17 publications

Confirming anthropogenic influences on the major organic and inorganic constituents of rainwater in an urban area

Confirming anthropogenic influences on the major organic and inorganic constituents of rainwater in an urban area

Minerals in drinking water available in Bangkok, Nakhon Nayok, and Chachoengsao

Estimation of Rainwater Quality Using GPS-derived Atmospheric Propagation Delay and Meteorological Data

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