PENENTUAN ION CU(II) SECARA FLOW-INJECTION ANALYSIS (FIA) SIKLIK DENGAN SENYAWA PENGKOMPLEKS 4-(2 PYRIDYLAZO) RESORCINAL (PAR)DAN ETILEN DIAMIN TETRA ASETAT (EDTA)
Spectrophotometrically, Copper(II) can be determined with 4-(2-pyridylazo)resorcinol (PAR) in the presence of EDTA. The absorption based on complexation copper(II) with PAR (red complex) which detectable by spectrophotometer and the obtained signals corresponded to copper(II) concentration. Cycli...
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| Format: | Final Project |
| Language: | Indonesia |
| Subjects: | |
| Online Access: | https://digilib.itb.ac.id/gdl/view/71912 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Spectrophotometrically, Copper(II) can be determined with 4-(2-pyridylazo)resorcinol
(PAR) in the presence of EDTA. The absorption based on complexation copper(II) with
PAR (red complex) which detectable by spectrophotometer and the obtained signals
corresponded to copper(II) concentration. Cyclic FIA is based on the stability constant of
copper(II)-EDTA complex (log K=18,8) which have bigger value than stability constant of
copper(II)-PAR complex (log K=14,8). Therefore, copper(II)-PAR complex that through the
FIA cell will go back to reservoir and ligand exchange occurred between copper(II)-PAR
became copper(II)-EDTA, consequently the free PAR ligand will be regenerated and could
be reused as ligand in the next determination of copper(II) ion. The aim of this experiment is
to develop cyclic FIA system that can be used repeatedly in the determination of copper(II)
ion. So, with this cylic FIA system will minimize reagents consumption, operating cost, and
time. |
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