Ethanol/Water Extraction Combined with Solid-Phase Extraction and Solid-Phase Microextraction Concentration for the Determination of Chlorophenols in Cork Stoppers

2006 ◽  
Vol 54 (3) ◽  
pp. 627-632 ◽  
Author(s):  
Sara Insa ◽  
Emili Besalú ◽  
Cristina Iglesias ◽  
Victòria Salvadó ◽  
Enriqueta Anticó
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Water Extraction ◽  
Phase Extraction ◽  
Cork Stoppers

Determination of estrogenic short ethoxy chain nonylphenols and metabolites in river and treated water by SPE (solid phase extraction) and SPME (solid phase microextraction)

2003 ◽  
Vol 3 (1-2) ◽  
pp. 329-334
Author(s):  
A. Díaz ◽  
M.T. Galceran ◽  
F. Ventura
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Time Effect ◽  
Phase Extraction ◽  
Organic Modifiers ◽  
Treated Water ◽  
Headspace Spme ◽  
Fiber Selection

Two solid-phase microextraction (SPME) procedures have been developed to determine short ethoxy chain nonylphenols and metabolites in water. A direct-SPME method has been used for the determination of short ethoxy chain nonylphenols and their brominated derivatives, whereas the in-sample derivatization headspace-SPME method has proved to be suitable for the simultaneous determination of short ethoxy nonylphenols and their acidic metabolites. Several parameters affecting both SPME procedures, such as extraction mode, fiber selection, extraction time, effect of organic modifiers, derivatization reagents and temperature, were optimized. Both methods were able to determine all these compounds at the sub-mg/L level and the results obtained were compared to a solid phase extraction method (SPE). The procedures developed were applied to raw and treated water from Barcelona (NE Spain).

Magnetic nanoparticle based dispersive micro-solid-phase extraction for the determination of malachite green in water samples: optimized experimental design

2015 ◽  
Vol 39 (12) ◽  
pp. 9813-9823 ◽  
Author(s):  
Arash Asfaram ◽  
Mehrorang Ghaedi ◽  
Alireza Goudarzi ◽  
Mustafa Soylak ◽  
Sanaz Mehdizadeh Langroodi
Keyword(s):  
Experimental Design ◽  
Solid Phase Extraction ◽  
Malachite Green ◽  
Water Samples ◽  
Extraction Method ◽  
Solid Phase Microextraction ◽  
Magnetic Nanoparticle ◽  
Solid Phase ◽  
Phase Extraction

This paper presents an extraction method based on dispersive-nanoparticle-solid phase microextraction for the preliminary preconcentration and subsequent spectrophotometric determination of trace amounts of malachite green.

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