%0 Journal Article
%T Sulfate, nitrate and chloride in PM10 in the city of San Jos¨¦, Costa Rica: 2004-2006
%A HERRERA MURILLO
%A J.
%A ROJAS MAR¨ªN
%A J. F.
%A RODR¨ªGUEZ ROM¨¢N
%A S.
%A GARC¨ªA MART¨ªNEZ
%A R.
%J Atm¨®sfera
%D 2010
%I Scientific Electronic Library Online
%X the analysis of pm10 levels in two sites of the city of san jos¨¦ (catedral metropolitana and junta de educaci¨®n), in a period of 2.5 years (april 2004-october 2006), reported a median of 39 ¡À 8 and 27 ¡À 8 ¦Ìg m-3, respectively. in addition, so42-, no3- and cl- levels were measured in both areas, where annual averages resulted not significantly different between each other. the analysis of main components, applied to the collected data, reveals a 65% of total variance explained by two factors. the pc1 correlates cl- concentration and wind speed, indicating a marine contribution to this ion. the pc2 shows a relation between so42-, no3- and pm10 levels, demonstrating its anthropogenic origin.
%K atmospheric aerosols
%K inorganic anions
%K san jos¨¦-costa rica.
%U http://www.scielo.org.mx/scielo.php?script=sci_abstract&pid=S0187-62362010000100006&lng=en&nrm=iso&tlng=en