Characterization　of　Ion　Chemical　of　Precipitation　in　Pusan，Korea

Abstract

In　order　to　investigate　the　source　and　chemical　composition　of　precipitation　were　meased　at　eight　sites　in　the　pusan region　during　the　period　from　February　to　September 1995．289 samples　of　precipitation　were　collected　by　automatic seperation　sampler　of 6－step，and　the　amount　of　dissolved　components（H⁺，Na^＋，K^＋，NH₄^＋，Ca^2＋, Mg^2＋, C1^-，SO₄^-, NO₃^-）and　conductivity　were　measured　by　ion　chromatography，pH　meter　and　conductivity　meter． In　this　study，the　avefage　of　total 289 samples　pH　and　electric　conductivity　xvere 5.99 and 70.3μs／cm，and　according to　average　concentrations　of　components　were　composed　of　SO₄^2-，Ca^2＋，C1^-，NH₄^＋，Na⁺ Mg^2＋，NO₃^-，K^＋ with 221， 159.8，157，99.9，96.2，56.5，50.9 and 24.6μeq／1，respectively， Colltribution　of　non－seasalts　were　larger　than　the　seasalt，which　has 71.3 ％ and　among　the　rest 81.3％ was　neutralized by　ammonia　and　calcium　species　to　acidfy　compounds，such　as　H₂SO₄ and　HNO₃ in　the　procipitation． Especially，source　of　calcium　compounds　was　estimated　from　soil，so，it　seems　that　precipitation　is　neutralized　by　Ca²⁺ than　NH₄⁺in　pusan，korea.