NDLI: Cloud Point Extraction Using NDTT Reagent for Preconcentration and Determination of Copper in Some Environmental Water Samples by Flame Atomic Absorption Spectroscopy

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Cloud Point Extraction Using NDTT Reagent for Preconcentration and Determination of Copper in Some Environmental Water Samples by Flame Atomic Absorption Spectroscopy

Content Provider	Semantic Scholar
Author	Biparva, Pourya Hadjmohammadi, Mohammad Reza
Copyright Year	2007
Abstract	A micellar-mediated phase separation using Triton X-114 was applied for preconcentration of copper, by formation of a complex with 6-(2-naphthyl)-2,3-dihydro-as-triazine-3-thione (NDTT) reagent, and its analysis by flame atomic absorption spectrometry (FAAS).The effect of experimental conditions such as pH, concentration of reagent and surfactant, equilibration temperature and time on cloud point extraction for maximum recovery were investigated. The complex of copper with NDTT was quantitatively extracted by Triton-Xl 14 at 40 °C, then acidified methanol was added to surfactant-rich phase to decrease the viscosity for measurement of copper. The optimum conditions were pH = 8.5 using borate buffer, 0.05% (v/v) Triton X-114 and 3 x 10 -6 mol 1 -1 of NDTT. Calibration graph of copper under optimum conditions was linear in the range of 0.22-100 ng ml- 1 with a correlation coefficient of 0.998 and limit of detection of 0.22 ng ml -1 . The relative standard deviation (R.S.D.) for 5 replicate measurements at 50 ng ml -1 Cu level was 2.1% and the enrichment factor for this determination was 22.4. Finally, the proposed method was successfully applied for copper determination in some environmental water samples.
Starting Page	805
Ending Page	810
Page Count	6
File Format	PDF HTM / HTML
Volume Number	54
Alternate Webpage(s)	http://acta-arhiv.chem-soc.si/54/54-4-805.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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