HUJAN ASAM DI CITEKO BOGOR DAN KEMAYORAN JAKARTA

Abstract

Using data on sulfate ions and nitrate ions collected at air quality observation stations in Citeko, Puncak Bogor and Kemayoran, Central Jakarta from 1993 – 2012, we have calculated the deposition of acid using the cation and anion analysis technique from water samples using the ion chromatography method. . The  Citeko  region  which  is  in  the  peak  region  of  Bogor    has  been  exposed  to  acid  rain. Acid deposition in  Citeko   averages 10.5  meq/m2/month    equivalent to 5.04 kg/ha/month  with  a  range  between  6.11   – 13.03    meq/m2/month. In     Kemayoran, the average monthly acid deposition is 8.5 meq/m2/month   or    equivalent   to  4.08  kg/ha /month  with  a  range  between 5.15   - 15.2  meq/m2/month. In both locations,   the type of acid  deposited  is a large  contribution of sulfuric acid, 69.9% respectively in   Kemayoran  and   64.9   in   Citeko. In Kemayoran,    sulfuric acid   is deposited   more than in Citeko. Nitrate is deposited more     a lot     in     Citeko     than     in Kemayoran. Based  on  monthly    and  normal    annual  windrose  data  in   Citeko,  it  is  possible  that  there  has  been  transport  of  SO2  and  NO2  pollutants  from  DKI  Jakarta, Depok, Tangerang and surrounding areas to the peak area of ?? Bogor. Local  wind  vectors  (sea-land breeze)  also  play  a  role   in  bringing  pollutants  to  the  Citeko  area  in Puncak Bogor