A new approach for simultaneous determination of Co(II), Ni(II), Cu(II) and Pd(II) using 2-thiophenaldehyde-3-thiosemicarbazone as reagent by solid phase microextraction–high performance liquid chromatography

2007 ◽  
Vol 603 (1) ◽  
pp. 44-50 ◽  
Author(s):  
Varinder Kaur ◽  
Jatinder Singh Aulakh ◽  
Ashok Kumar Malik
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Simultaneous Determination ◽  
Solid Phase Microextraction ◽  
High Performance ◽  
Solid Phase ◽  
New Approach

scholarly journals Determination of Some Aldehydes by Using Solid-Phase Microextraction and High-Performance Liquid Chromatography with UV Detection

2007 ◽  
Vol 90 (6) ◽  
pp. 1689-1694 ◽  
Author(s):  
Ashwini Kumar ◽  
Baldev Singh ◽  
Ashok Kumar Malik ◽  
Dhananjay K Tiwary
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Solid Phase Microextraction ◽  
High Performance ◽  
Solid Phase ◽  
Detection Limits ◽  
Uv Detection ◽  
New Approach ◽  
Better Than

Abstract A new approach has been developed for the extraction and determination of aldehydes such as veratraldehyde, m-nitrobenzaldehyde, cinnamaldehyde, benzaldehyde, and p-chlorobenzaldehyde by using solid-phase microextraction (SPME) and high-performance liquid chromatography with UV detection (HPLC/UV). The method involves adsorption of the aldehydes on polydimethylsiloxane/divinylbenzenecoated fiber, followed by desorption in the desorption chamber of the SPME-HPLC interface, using acetonitrilewater (70 + 30) as the mobile phase; UV detection was at 254 nm. A good separation of 5 aldehydes was obtained on a C18 column. The detection limits of veratraldehyde, m-nitrobenzaldehyde, cinnamaldehyde, benzaldehyde, and p-chlorobenzaldehyde are 25, 41, 13, 12, and 11 pg/mL, respectively, which are about 100 times better than the detection limits for other SPME methods using gas chromatography. The proposed method was validated by determining benzaldehyde in bitter almonds and cinnamaldehyde in cinnamon bark. The recoveries of the 5 analytes were determined by analysis of spiked drinking water.

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