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Prinsip Kromatografi
Penukaran Ion
05
Prinsip
Kromatografi penukar ion merupakan
kromatografi yang berdasarkan penukaran ion-ion
secara equivalen antara larutan dan gugusan
fungsional resin yang mengandung ion-ion yang
dapat ditukar (Pudjaatmaka, 2002).
Resin penukar ion didasarkan pada perbedaan daya adsorbsi
spesies-spesies ion oleh kolom penukar ion. Pertukaran ion
bersifat stoikiometri, yakni satu H + diganti oleh suatu M+ .
Stoikiometri bersifat eksak dalam arti satu muatan positif
meninggalkan resin untuk satu muatan yang masuk
(Underwood,2001) Resin penukar anion basa kuat dapat
digunakan diatas rentan pH 0 s/d 12, sedangkan resin penukar
anion basa lemah hanya diatas pH 0 s/d 9. Golongan penukar
basa lemah tidak akan melepaskan asam tapi yang sangat lemah,
tetapi akan lebih disukai untuk asa m kuat yang mungkin tertahan
oleh resin basa kuat seperti Sulfonat (Soebagio,2002,94)
Resin Penukar ion
 pH
 Kecepatan aliran
 Konsentrasi ion terlarut
 Tinggi media penukar ion
Faktor-faktor yang mempengaruhi proses pertukaran
ion

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prinsip penukaran ion.pptx

  • 2. Prinsip Kromatografi penukar ion merupakan kromatografi yang berdasarkan penukaran ion-ion secara equivalen antara larutan dan gugusan fungsional resin yang mengandung ion-ion yang dapat ditukar (Pudjaatmaka, 2002).
  • 3. Resin penukar ion didasarkan pada perbedaan daya adsorbsi spesies-spesies ion oleh kolom penukar ion. Pertukaran ion bersifat stoikiometri, yakni satu H + diganti oleh suatu M+ . Stoikiometri bersifat eksak dalam arti satu muatan positif meninggalkan resin untuk satu muatan yang masuk (Underwood,2001) Resin penukar anion basa kuat dapat digunakan diatas rentan pH 0 s/d 12, sedangkan resin penukar anion basa lemah hanya diatas pH 0 s/d 9. Golongan penukar basa lemah tidak akan melepaskan asam tapi yang sangat lemah, tetapi akan lebih disukai untuk asa m kuat yang mungkin tertahan oleh resin basa kuat seperti Sulfonat (Soebagio,2002,94) Resin Penukar ion
  • 4.  pH  Kecepatan aliran  Konsentrasi ion terlarut  Tinggi media penukar ion Faktor-faktor yang mempengaruhi proses pertukaran ion