LOW-COST AUTOMATED RAIN COLLECTOR AND ITS APPLICATION TO THE STUDY OF WET ONLY DEPOSITION IN SAO-PAULO (BRAZIL)

被引：14

作者：

FORNARO, A ^{[1
]}

ISOLANI, PC ^{[1
]}

GUTZ, IGR ^{[1
]}

机构：

[1] UNIV SAO PAULO,INST QUIM,BR-01498 SAO PAULO,BRAZIL

来源：

ATMOSPHERIC ENVIRONMENT PART B-URBAN ATMOSPHERE | 1993年 / 27卷 / 03期

关键词：

RAIN COLLECTOR; ACID RAIN; WET ONLY DEPOSITION; PH AND CONDUCTIVITY OF RAIN IN SAO PAULO (BRAZIL);

D O I：

10.1016/0957-1272(93)90025-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

An automatic rain collector was developed with emphasis on simplicity, construction with readily available low-cost materials, inexpensive maintenance and reliable operation at temperatures above freezing point. The rain sensor is of the heated AC conductometric type and the circuit includes electronic protections against false triggering by electrical transients. With this collector, the first studies of chemical characterization of wet only deposition were made in Sao Paulo over the period of November 1988 to June 1990. Results are presented and compared with previous total deposition studies. For this period the volume-weighted mean values of the pH and conductivity were 4.6 and 19 mu S cm(-1), respectively.

引用

页码：307 / 312

页数：6