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Metode Spektrofotometri

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Title: KIMIA FARMASI ANALISIS Author: Administrator Last modified by: setia Created Date: 12/23/2006 9:57:02 AM Document presentation format: On-screen Show – PowerPoint PPT presentation

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Title: Metode Spektrofotometri


1
Metode Spektrofotometri
2
Spektrofotometri
  • Teknik analisis yang berhubungan dengan
  • penggunaan cahaya
  • untuk
  • - melihat pola spektrum senyawa
  • - mengukur konsentrasi bahan kimia

3
(No Transcript)
4
Conventional Spectrophotometer
Schematic of a conventional single-beam
spectrophotometer
5
(No Transcript)
6
Penyerapan warna yang berbeda
7
Anilin vs Pelarut
1
10 mg/L dlm etanol
2
200 mg/L dlm 0,1N HCl
C6H7N
3
10 mg/L dlm (199) NaOH
8
Ibuprofen C13H18O2
BM 206,3
9
PK. Ibuprofen Spektro UV
Pelarut ( 265 nm )
Air-basa 18,5
10
Meloksikam
Sifat fisika-kimia ? Adakah kromofor dan
auksokrom ?
11
The Magnitude of Molar absorptivity is 0 to
around 105 e 8.7 x 1019 P A P
transition probability (0 to 1) A cross
sectional target area in square centimeters
(for organic molecules, this number is around
10-15 cm2).
12
Rumus Pendekatan
Pada pelarut dan ? tertentu
13
Rumus Pendekatan
  • A ? b c
  • ? x

14
Propil barbital vs Fenobarbital
15
Spektrum Fenobarbital
Ultraviolet Spectrum
16
Fenobarbital dalam larutan bufer pH 9,2
Auksokrom
Kromofor
17
Spektrum propil barbital
18
Papaverin HCl
19
Kunang-kunang
20
Visible Spectrum
21
Colors of Visible light
22
Paprika
23
Lycopene ? Tomato
24
Zeaxanthin ? Corn
25
?-Carotene ? Wortel
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