File Download
 
Links for fulltext
(May Require Subscription)
 
Supplementary

Article: Precipitation chemistry of Lhasa and other remote towns, Tibet
  • Basic View
  • Metadata View
  • XML View
TitlePrecipitation chemistry of Lhasa and other remote towns, Tibet
 
AuthorsZhang, DD2
Peart, M2
Jim, CY2
He, YQ3
Li, BS1
Chen, JA4
 
KeywordsAirborne dust
Alkaline precipitation
CO2
PH
Rainwater chemistry
 
Issue Date2003
 
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenv
 
CitationAtmospheric Environment, 2003, v. 37 n. 2, p. 231-240 [How to Cite?]
DOI: http://dx.doi.org/10.1016/S1352-2310(02)00835-X
 
AbstractPrecipitation event samples during 1987-1988 field expedition periods and 1997, 1998, 1999 and 2000 have been collected at Lhasa, Dingri, Dangxiong and Amdo, Tibet. The sampling and analysis were based on WMO recommendations for a background network with some modifications according to local conditions and environmental characteristics. The following precipitation constituents and related parameters were measured: pH, conductivity, CO2 partial pressure, total suspended particles, and the content of K+, Na+, Ca2+, Mg2+, Fe, Mn, NH4 +, Cl-, NO2 -, NO3 -, SO4 2-Br-, HCO3 - and HPO4 2-. Some atmospheric dust samples have also been collected. Over 300 precipitation events have been measured for pH and conductivity. Among these, 60 have been analysed for their chemical components. The results show that Lhasa's precipitation events were constantly alkaline with weighted averages of pH 8.36 in the 1987-1988 period, and 7.5 for 1997 to 1999. Only one event was weakly acidic during 1997-1999. Although CO2 partial pressure, a major producer of acidity in natural water on the Plateau, falls with increasing elevation, the lowest measured CO2 partial pressure can only raise pH value by 0.1 units in the sampling areas. Chemical analysis indicates that the major contributor to alkaline precipitation is the continental dust, which is rich in calcium. The analysis also shows that Tibet is still one of the cleanest areas in the world with little air pollution. However, the decline of pH from the 1980s to 1990s, which was reflected by an increase of NO3 - and SO4 2- in precipitation, alerts us to the urgency of environmental protection in this fragile paradise. © 2002 Elsevier Science Ltd. All rights reserved.
 
ISSN1352-2310
2013 Impact Factor: 3.062
2013 SCImago Journal Rankings: 1.776
 
DOIhttp://dx.doi.org/10.1016/S1352-2310(02)00835-X
 
ISI Accession Number IDWOS:000180455000006
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorZhang, DD
 
dc.contributor.authorPeart, M
 
dc.contributor.authorJim, CY
 
dc.contributor.authorHe, YQ
 
dc.contributor.authorLi, BS
 
dc.contributor.authorChen, JA
 
dc.date.accessioned2009-04-03T07:44:14Z
 
dc.date.available2009-04-03T07:44:14Z
 
dc.date.issued2003
 
dc.description.abstractPrecipitation event samples during 1987-1988 field expedition periods and 1997, 1998, 1999 and 2000 have been collected at Lhasa, Dingri, Dangxiong and Amdo, Tibet. The sampling and analysis were based on WMO recommendations for a background network with some modifications according to local conditions and environmental characteristics. The following precipitation constituents and related parameters were measured: pH, conductivity, CO2 partial pressure, total suspended particles, and the content of K+, Na+, Ca2+, Mg2+, Fe, Mn, NH4 +, Cl-, NO2 -, NO3 -, SO4 2-Br-, HCO3 - and HPO4 2-. Some atmospheric dust samples have also been collected. Over 300 precipitation events have been measured for pH and conductivity. Among these, 60 have been analysed for their chemical components. The results show that Lhasa's precipitation events were constantly alkaline with weighted averages of pH 8.36 in the 1987-1988 period, and 7.5 for 1997 to 1999. Only one event was weakly acidic during 1997-1999. Although CO2 partial pressure, a major producer of acidity in natural water on the Plateau, falls with increasing elevation, the lowest measured CO2 partial pressure can only raise pH value by 0.1 units in the sampling areas. Chemical analysis indicates that the major contributor to alkaline precipitation is the continental dust, which is rich in calcium. The analysis also shows that Tibet is still one of the cleanest areas in the world with little air pollution. However, the decline of pH from the 1980s to 1990s, which was reflected by an increase of NO3 - and SO4 2- in precipitation, alerts us to the urgency of environmental protection in this fragile paradise. © 2002 Elsevier Science Ltd. All rights reserved.
 
dc.description.naturepostprint
 
dc.identifier.citationAtmospheric Environment, 2003, v. 37 n. 2, p. 231-240 [How to Cite?]
DOI: http://dx.doi.org/10.1016/S1352-2310(02)00835-X
 
dc.identifier.doihttp://dx.doi.org/10.1016/S1352-2310(02)00835-X
 
dc.identifier.epage240
 
dc.identifier.hkuros80650
 
dc.identifier.isiWOS:000180455000006
 
dc.identifier.issn1352-2310
2013 Impact Factor: 3.062
2013 SCImago Journal Rankings: 1.776
 
dc.identifier.issue2
 
dc.identifier.openurl
 
dc.identifier.scopuseid_2-s2.0-0037213151
 
dc.identifier.spage231
 
dc.identifier.urihttp://hdl.handle.net/10722/54352
 
dc.identifier.volume37
 
dc.languageeng
 
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/atmosenv
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofAtmospheric Environment
 
dc.relation.referencesReferences in Scopus
 
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License
 
dc.subjectAirborne dust
 
dc.subjectAlkaline precipitation
 
dc.subjectCO2
 
dc.subjectPH
 
dc.subjectRainwater chemistry
 
dc.titlePrecipitation chemistry of Lhasa and other remote towns, Tibet
 
dc.typeArticle
 
<?xml encoding="utf-8" version="1.0"?>
<item><contributor.author>Zhang, DD</contributor.author>
<contributor.author>Peart, M</contributor.author>
<contributor.author>Jim, CY</contributor.author>
<contributor.author>He, YQ</contributor.author>
<contributor.author>Li, BS</contributor.author>
<contributor.author>Chen, JA</contributor.author>
<date.accessioned>2009-04-03T07:44:14Z</date.accessioned>
<date.available>2009-04-03T07:44:14Z</date.available>
<date.issued>2003</date.issued>
<identifier.citation>Atmospheric Environment, 2003, v. 37 n. 2, p. 231-240</identifier.citation>
<identifier.issn>1352-2310</identifier.issn>
<identifier.uri>http://hdl.handle.net/10722/54352</identifier.uri>
<description.abstract>Precipitation event samples during 1987-1988 field expedition periods and 1997, 1998, 1999 and 2000 have been collected at Lhasa, Dingri, Dangxiong and Amdo, Tibet. The sampling and analysis were based on WMO recommendations for a background network with some modifications according to local conditions and environmental characteristics. The following precipitation constituents and related parameters were measured: pH, conductivity, CO2 partial pressure, total suspended particles, and the content of K+, Na+, Ca2+, Mg2+, Fe, Mn, NH4 +, Cl-, NO2 -, NO3 -, SO4 2-Br-, HCO3 - and HPO4 2-. Some atmospheric dust samples have also been collected. Over 300 precipitation events have been measured for pH and conductivity. Among these, 60 have been analysed for their chemical components. The results show that Lhasa&apos;s precipitation events were constantly alkaline with weighted averages of pH 8.36 in the 1987-1988 period, and 7.5 for 1997 to 1999. Only one event was weakly acidic during 1997-1999. Although CO2 partial pressure, a major producer of acidity in natural water on the Plateau, falls with increasing elevation, the lowest measured CO2 partial pressure can only raise pH value by 0.1 units in the sampling areas. Chemical analysis indicates that the major contributor to alkaline precipitation is the continental dust, which is rich in calcium. The analysis also shows that Tibet is still one of the cleanest areas in the world with little air pollution. However, the decline of pH from the 1980s to 1990s, which was reflected by an increase of NO3 - and SO4 2- in precipitation, alerts us to the urgency of environmental protection in this fragile paradise. &#169; 2002 Elsevier Science Ltd. All rights reserved.</description.abstract>
<language>eng</language>
<publisher>Pergamon. The Journal&apos;s web site is located at http://www.elsevier.com/locate/atmosenv</publisher>
<relation.ispartof>Atmospheric Environment</relation.ispartof>
<rights>Creative Commons: Attribution 3.0 Hong Kong License</rights>
<subject>Airborne dust</subject>
<subject>Alkaline precipitation</subject>
<subject>CO2</subject>
<subject>PH</subject>
<subject>Rainwater chemistry</subject>
<title>Precipitation chemistry of Lhasa and other remote towns, Tibet</title>
<type>Article</type>
<identifier.openurl>http://library.hku.hk:4550/resserv?sid=HKU:IR&amp;issn=1352-2310&amp;volume=37&amp;issue=2&amp;spage=231&amp;epage=240&amp;date=2003&amp;atitle=Precipitation+chemistry+of+Lhasa+and+other+remote+towns,+Tibet</identifier.openurl>
<description.nature>postprint</description.nature>
<identifier.doi>10.1016/S1352-2310(02)00835-X</identifier.doi>
<identifier.scopus>eid_2-s2.0-0037213151</identifier.scopus>
<identifier.hkuros>80650</identifier.hkuros>
<relation.references>http://www.scopus.com/mlt/select.url?eid=2-s2.0-0037213151&amp;selection=ref&amp;src=s&amp;origin=recordpage</relation.references>
<identifier.volume>37</identifier.volume>
<identifier.issue>2</identifier.issue>
<identifier.spage>231</identifier.spage>
<identifier.epage>240</identifier.epage>
<identifier.isi>WOS:000180455000006</identifier.isi>
<publisher.place>United Kingdom</publisher.place>
<bitstream.url>http://hub.hku.hk/bitstream/10722/54352/2/80650.pdf</bitstream.url>
</item>
Author Affiliations
  1. South China Normal University
  2. The University of Hong Kong
  3. Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences
  4. Chinese Academy of Sciences