ELEMENTS IN THE PRECIPITATION OF SAO-PAULO CITY (BRAZIL)

被引：25

作者：

FORTI, MC ^{[1
]}

MOREIRANORDEMANN, LM ^{[1
]}

ANDRADE, MF ^{[1
]}

ORSINI, CQ ^{[1
]}

机构：

[1] UNIV SAO PAULO,INST FIS,GRUPO ESTUDOS POLUICAO AR,BR-01498 SAO PAULO,SP,BRAZIL

来源：

ATMOSPHERIC ENVIRONMENT PART B-URBAN ATMOSPHERE | 1990年 / 24卷 / 02期

关键词：

Brazil; Precipitation; washout ratio;

D O I：

10.1016/0957-1272(90)90042-S

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Rainwater samples in S. Paulo city were collected on an event basis from October 1983 to October 1985 covering two dry and two rainy periods. Bulk samples only were obtained. At the same site and period, fine, coarse and inhalable particles were also collected. Na+, Ca2+, K+, Mg2+, NO3-, SO42- and NH4+ contents were determined in rainwater samples, while Na, Ca, K, Cl and S concentrations were measured in aerosol samples. Rainwater is slightly acid (mean pH = 5.0), and contains high concentrations of Ca2+, NO3-, SO42- and NH4+. Dry and wet fluxes and washout ratios were determined for some elements. Results obtained suggest that the atmospheric composition in this city is strongly influenced by anthropogenic sources. © 1990.

引用

页码：355 / 360

页数：6

共 26 条

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