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DETECTION OF COPPER IN THE SYNTHETIC WASTEWATER BY USING PYRAZOLIDINE LUMINOL (PL)

DETECTION OF COPPER IN THE SYNTHETIC WASTEWATER BY USING PYRAZOLIDINE LUMINOL (PL). Syarifah Hikmah Julinda a , Preeda Parkpian a and Srung Smanmoo b

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DETECTION OF COPPER IN THE SYNTHETIC WASTEWATER BY USING PYRAZOLIDINE LUMINOL (PL)

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  1. DETECTION OF COPPER IN THE SYNTHETIC WASTEWATER BY USING PYRAZOLIDINE LUMINOL (PL) Syarifah Hikmah Julindaa, Preeda Parkpiana and Srung Smanmoob aSchool of Environment, Resources and Development, Asian Institute of Technology, 58, Moo 9, km.42, Phaholyothin Highway, Klong Luang, Pathumthani 12120 Thailand bBioresources Research Unit, National Center for Genetic Engineering and Biotechnology (BIOTEC), 113 Thailand Science Park, Phaholyothin Road, Klong 1, Klong Luang, Pathumthani 12120 Thailand Presented By Syarifah Hikmah Julinda, S.Pi, M.Sc

  2. Contents • Background of study • Research objective • Methodology • Results and discussions • Conclusions

  3. Background Environmental levels of Copper Copper is an essential traceelements but also an environmental pollutant Composition of copper releases to water bodies (United States Department of Agriculture, 1998)

  4. Common methods for Cu (II) ion detection require the use of sophistication and expensive instrumentation Measurement Spectrophotometer

  5. Chemosensor • Upon binding metals: • A fluorescent chemosensor induces fluorescent change • A colorimetric chemosensor exhibits color change. This is challenging technique since the detection of Cu (II) ion can be achieved by naked eye Successful chemosensor for detection metals A dual responsive colorimetric and fluorescent Hg2+ ion from rhodamines based sensor in aqueous media (Huang et al., 2008)

  6. Cu(II) ion Pyrazolidine Luminol Pyrazolidine Luminol (PL) • PL is defined as a colorimetric chemosensor for Cu(II) ion detection. Upon binding with Cu(II) ion, PL induces a color change followed by appearing peak of absorbance around 425 nm. (Nasomphan et al., 2009)

  7. Research objectives • Developing a PL sensor as a colorimetric chemosensor for the detection of Cu (II) ion • Determination of detection limit and optimum conditions of PL sensor

  8. Phase I Pre research Materials and Reagents Preparation Synthesis of sensor and 1HNMR analysis Selectivity of sensor Naked eye UV-vis spectrophotometer Phase II Developing of sensor Detection limit of sensor PL sensor solution • Optimum conditions of PL sensor : • Time response • pH UV-vis spectrophotometer Methodology

  9. Results and discussions PL Cu2+ Ag+ Na+ Mn2+ Zn2+ Co2+ Cd2+ Hg2+ Pb2+ Fe2+ Ba2+ Al2+ Ca2+ Ni2+ Absorbance of PL in the presence of various metal ions Selectivity of PL sensor Concentration of PL and metal ions were 10-3 M

  10. Detection limit of PL sensor 0 10-3 10-2 10-1 Naked eye : Detection limit found at 3.75 x 10-4 M UV spectro : Detection limit found at 0.6 x 10-4 M

  11. Optimum conditions of PL sensor (Cont’) Time influence of UV-vis titration spectra of PL sensor (10-3 M) upon addition Cu(II) ion 10-3 M Effect of pH on UV-vis results of absorbance PL sensor (10-3 M) at 425 nm upon addition Cu(II) ion 10-3 M

  12. Conclusions • There were changes in color of PL sensor upon addition of Cu(II) ion, followed by appearing peak of absorbance at 425.92 nm (UV-Vis spectra) • Detection limit PL sensor 3.75 x 10-4 M of Cu(II) ion by naked eye observation and 0.6 x 10-4 M by UV-vis spectrophotometer • PL sensor give highly selectivity. In addition, PL sensor was more preferable to Cu(II) ion rather than Cu(I) ion.

  13. Terimakasih

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