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(Received : July 31, 1997 ; Accepted for publication : November 4, 1997 ; Published on Web : February 17, 1998)
Automatic analyzers for rainfall and Automatic water sampling apparatus areusually used as monitoring systems for acid rain. Instead of these apparatus, a simple system which measurs hydrogen ion concentration and electric conductivityin rainfall was devised by using a personal computer. This system consists ofpH meter, electric conductivity meter, automatic level controller and personalcomputer. This paper showes that the system was able to usefully measure hydro-genion concentration in rainfall.
Key words: Chemical instrument, Acid rain
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