Comparison of liquid–liquid extraction, solid-phase extraction and co-precipitation preconcentration methods for the determination of cadmium, copper, nickel, lead and zinc in seawater

2006 ◽  
Vol 576 (2) ◽  
pp. 221-228 ◽  
Author(s):  
Irina Komjarova ◽  
Ronny Blust
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Liquid Extraction ◽  
Phase Extraction ◽  
Copper Nickel ◽  
Liquid Liquid Extraction ◽  
Lead And Zinc ◽  
Co Precipitation ◽  
Nickel Lead

scholarly journals Effectiveness of Liquid-Liquid Extraction, Solid Phase Extraction, and Headspace Technique for Determination of Some Volatile Water-Soluble Compounds of Rose Aromatic Water

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Hale Seçilmiş Canbay
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Extraction Methods ◽  
Liquid Extraction ◽  
Water Soluble ◽  
Gas Chromatography Mass Spectrometry ◽  
Phase Extraction ◽  
Liquid Liquid Extraction ◽  
Cosmetic Industry

Steam distillation is used to isolate scent of rose flowers. Rose aromatic water is commonly used in European cuisine and aromatherapy besides its use in cosmetic industry for its lovely scent. In this study, three different sampling techniques, liquid-liquid extraction (LLE), headspace technique (HS), and solid phase extraction (SPE), were compared for the analysis of volatile water-soluble compounds in commercial rose aromatic water. Some volatile water-soluble compounds of rose aromatic water were also analyzed by gas chromatography mass spectrometry (GCMS). In any case, it was concluded that one of the solid phase extraction methods led to higher recoveries for 2-phenylethyl alcohol (PEA) in the rose aromatic water than the liquid-liquid extraction and headspace technique. Liquid-liquid extraction method provided higher recovery ratios for citronellol, nerol, and geraniol than others. Ideal linear correlation coefficient values were observed by GCMS for quantitative analysis of volatile compounds (r2≥0.999). Optimized methods showed acceptable repeatability (RSDs < 5%) and excellent recovery (>95%). For compounds such as α-pinene, linalool, β-caryophyllene, α-humulene, methyl eugenol, and eugenol, the best recovery values were obtained with LLE and SPE.

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