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GAS CHROMATOGRAPHY-MASS SPECTROMETRY
(GC-MS)
Khairuddin
A. Pengantar
Identifikasi zat
berbeda dlm
sampel uji
GC
MS
GC-MS Analisis:
Obat, lingkungan, bahan
peledak, puing kebakaran,
keamanan bandara, zat
forensik, unsur runut
A. Pengertian GC-MS
GC ad suatu teknik pemisahan fisis yg
digunakan untuk memisahkan komponen
GC GC terdiri dari fase gerak gas dan fase diam
cairan yg dilapiskan pada suatu padatan.
digunakan untuk memisahkan komponen
senyawa volatil dan stabil secara termal.
MS ad suatu teknik analisis yg dpt
memberikan informasi tentang struktur
molekul anorganik, organik, dan biologis
serta komposisi kualitatif dan kuantitatif
dari campuran kompleks.
Dalam teknik ini, molekul dibombardir dgn
sinar elektron energetik untuk membentuk
ion-ion bermuatan positif yang selanjutnya
disortir menurut rasio massa terhadap
muatannya (m/z).
dari campuran kompleks.
MS
GC memisahkan komponen-komponen
GC-MS ad dua teknik analisis (GC dan MS)
yang dikombinasikan membentuk suatu
metode tunggal untuk menganalisis
campuran zat-zat kimia.
GC memisahkan komponen-komponen
campuran dan MS mengkarakterisasi tiap
komponen secara individual.
GC-MS
Dgn mengkombinasikan dua teknik ini,
kimia.
Dgn mengkombinasikan dua teknik ini,
seorg ahli kimia analitik dpt mengevaluasi
secara kualitatif dan kuantitatif suatu
larutan yang mengandung sejumlah zat
kimia.
GC MS
GC-MS
Memisahkan Mengkarakterisasi
Mengidentifikasi
zat kimia berbeda
dlm sampel uji
Memisahkan
komponen
dari campuran
Mengkarakterisasi
tiap komponen
secara individual
MS dpt memberikan informasi struktural
GC dpt memisahkan senyawa volatil dan
semi volatil dgn resolusi tinggi, tetapi GC
tdk dpt mengidentifikasinya.
MS dpt memberikan informasi struktural
secara detail, tetapi MS tidak dapat
memisahkannya secara cepat.
GC-MS
GC-MS memadukan dua kinerja di atas
(GC & MS) tanpa memisahkan kedua
instrumen tersebut.
B. Mekanisme Kerja GC-MS
Memisahkan
jenis molekul
GC
Mendeteksi
tiap fragmen
DETEKTOR Profil khas tiap
senyawa diubah
menjadi sinyal digital
jenis molekul
berdasarkan
sifat kimianya
Jenis Molekul
MS
Mengidentifikasi tiap
jenis molekul dgn
memfragmentasinya
menjadi ion-ion
tiap fragmen
dgn rasio m/z
menjadi sinyal digital
dan ditransmisi ke
komputer PC
KOMPUTER
Spektrum MS
GC MS
GC-MS
GC-MS
Komponen GC:
1. Gas Pembawa (N2, He)
2. Injektor (Loop Inj., Stop Flow)
3. Oven
4. Kolom (FSOT, SCOT)
Interface antara GC dan MS
(Effusion, Jet/Orifice Sp)
Komponen MS:
1. Sumber (EI, FI, CI)
2. Mass Analyzer (Quadruple Mass Ion Filter)
3. Detektor (Electron Multiplier Tube)
Komputer PC
GC-MS
02_GC-MS.pdf
02_GC-MS.pdf
02_GC-MS.pdf
02_GC-MS.pdf
02_GC-MS.pdf
02_GC-MS.pdf
02_GC-MS.pdf
02_GC-MS.pdf
02_GC-MS.pdf
02_GC-MS.pdf
02_GC-MS.pdf
02_GC-MS.pdf
02_GC-MS.pdf
02_GC-MS.pdf
02_GC-MS.pdf
02_GC-MS.pdf
02_GC-MS.pdf

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02_GC-MS.pdf

  • 2. A. Pengantar Identifikasi zat berbeda dlm sampel uji GC MS GC-MS Analisis: Obat, lingkungan, bahan peledak, puing kebakaran, keamanan bandara, zat forensik, unsur runut
  • 3. A. Pengertian GC-MS GC ad suatu teknik pemisahan fisis yg digunakan untuk memisahkan komponen GC GC terdiri dari fase gerak gas dan fase diam cairan yg dilapiskan pada suatu padatan. digunakan untuk memisahkan komponen senyawa volatil dan stabil secara termal.
  • 4. MS ad suatu teknik analisis yg dpt memberikan informasi tentang struktur molekul anorganik, organik, dan biologis serta komposisi kualitatif dan kuantitatif dari campuran kompleks. Dalam teknik ini, molekul dibombardir dgn sinar elektron energetik untuk membentuk ion-ion bermuatan positif yang selanjutnya disortir menurut rasio massa terhadap muatannya (m/z). dari campuran kompleks. MS
  • 5. GC memisahkan komponen-komponen GC-MS ad dua teknik analisis (GC dan MS) yang dikombinasikan membentuk suatu metode tunggal untuk menganalisis campuran zat-zat kimia. GC memisahkan komponen-komponen campuran dan MS mengkarakterisasi tiap komponen secara individual. GC-MS Dgn mengkombinasikan dua teknik ini, kimia. Dgn mengkombinasikan dua teknik ini, seorg ahli kimia analitik dpt mengevaluasi secara kualitatif dan kuantitatif suatu larutan yang mengandung sejumlah zat kimia.
  • 6. GC MS GC-MS Memisahkan Mengkarakterisasi Mengidentifikasi zat kimia berbeda dlm sampel uji Memisahkan komponen dari campuran Mengkarakterisasi tiap komponen secara individual
  • 7. MS dpt memberikan informasi struktural GC dpt memisahkan senyawa volatil dan semi volatil dgn resolusi tinggi, tetapi GC tdk dpt mengidentifikasinya. MS dpt memberikan informasi struktural secara detail, tetapi MS tidak dapat memisahkannya secara cepat. GC-MS GC-MS memadukan dua kinerja di atas (GC & MS) tanpa memisahkan kedua instrumen tersebut.
  • 8. B. Mekanisme Kerja GC-MS Memisahkan jenis molekul GC Mendeteksi tiap fragmen DETEKTOR Profil khas tiap senyawa diubah menjadi sinyal digital jenis molekul berdasarkan sifat kimianya Jenis Molekul MS Mengidentifikasi tiap jenis molekul dgn memfragmentasinya menjadi ion-ion tiap fragmen dgn rasio m/z menjadi sinyal digital dan ditransmisi ke komputer PC KOMPUTER Spektrum MS
  • 10.
  • 11. Komponen GC: 1. Gas Pembawa (N2, He) 2. Injektor (Loop Inj., Stop Flow) 3. Oven 4. Kolom (FSOT, SCOT) Interface antara GC dan MS (Effusion, Jet/Orifice Sp) Komponen MS: 1. Sumber (EI, FI, CI) 2. Mass Analyzer (Quadruple Mass Ion Filter) 3. Detektor (Electron Multiplier Tube) Komputer PC
  • 12. GC-MS