Determination of ultra traces of lead in water samples after combined solid-phase extraction–dispersive liquid–liquid microextraction by graphite furnace atomic absorption spectrometry

2013 ◽  
Vol 11 (1) ◽  
pp. 249-256 ◽  
Author(s):  
Mojtaba Shamsipur ◽  
Nazir Fattahi ◽  
Marzieh Sadeghi ◽  
Meghdad Pirsaheb
Keyword(s):  
Solid Phase Extraction ◽  
Water Samples ◽  
Solid Phase ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Phase Extraction ◽  
Graphite Furnace Atomic Absorption ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

scholarly journals Determination of Trace Amounts of Palladium in Water Samples by Graphite Furnace Atomic Absorption Spectrometry after Dispersive Liquid-Liquid Microextraction

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Mohammad Reza Jamali ◽  
Yaghoub Assadi ◽  
Reyhaneh Rahnama Kozani
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Water Samples ◽  
Natural Waters ◽  
Graphite Furnace ◽  
Absorption Spectrometry ◽  
Graphite Furnace Atomic Absorption ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

A simple, rapid, and powerful microextraction technique was used for determination of palladium (II) ion in water samples using dispersive liquid-liquid microextraction (DLLME) followed by graphite furnace atomic absorption spectrometry (GF AAS). The different variables affecting the complexation and extraction conditions such as extraction and disperser solvent type, extraction time, pH, and concentration of chelating agent were optimized. Under the optimum conditions, the calibration graph was linear in the ranges of 0.05–1 μg L−1with detection limit of 0.02 μg L−1. The precision (RSD %) for ten replicate determination at 0.2 μg L−1of palladium was better than 3.5% and the enrichment factor 166.5 was obtained from only 5.0 mL of sample. Under the presence of foreign ions, no significant interference was observed. Finally, accuracy and application of the method were estimated by using test samples of natural waters spiked with different amounts of palladium.

Solid-phase extraction combined with dispersive liquid–liquid microextraction for the spectrophotometric determination of ultra-trace amounts of azide ion in water samples

2014 ◽  
Vol 6 (15) ◽  
pp. 5784-5791 ◽  
Author(s):  
Ali Reza Zarei ◽  
Reihaneh Hajiaghabozorgy
Keyword(s):  
Solid Phase Extraction ◽  
Spectrophotometric Determination ◽  
Water Samples ◽  
Solid Phase ◽  
Phase Extraction ◽  
Azide Ion ◽  
Ultra Trace ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

Schematic of the preparation of surfactant-coated MWCNT/nano-Fe3O4composites and their application for the SPE–DLLME procedure.

Sign in / Sign up

Export Citation Format

Share Document