Column solid phase extraction as preconcentration method for trace element determination in oxalic acid by atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry

Preconcentration and determination of Mercury(II) from natural water and milk sample by Histidine functionalized multi-walled carbon nanotubes (MWCNTs-His)

“…This can be performed simply in many ways including liquid and solid phase extraction (SPE) techniques (Nambiar et al, 1998;Caroli et al, 1991). The application of SPE technique for preconcentration of trace metals from different samples results in several advantages such as the minimal waste generation, reduction of sample matrix effects as well as adsorption of the target species on the solid surface in a more stable chemical form (Alexandrova and Arpadjan, 1993).The normal and selective solid phase extractors are those derived from the immobilization of the organic *Corresponding author. E-mail: alimoghimi@iauvaramin.ac.ir, kamran9537@yahoo.com.…”

“…Amongst these sulfur-containing compounds are dithiocarbamate derivatives for selective extraction of Hg(II) (Mahmoud, 1998(Mahmoud, , 1999 and pre-concentration of various cations (Leyden et al, 1976;Moghimi et al, 2009;Tehrani et al, 2005) and 2-mercaptobenzothiazol-modified silica gel for on-line pre-concentration and separation of silver for atomic absorption spectrometric determinations (Moghimi et al, 2009). Ammonium hexa-hydroazepin-1-dithiocarboxylate (HMDC)-loaded on silica gel as solid phase pre-concentration column for atomic absorption spectrometry (AAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) was reported (Alexandrova and Arpadjan, 1993). Mercapto-modified silica gel phase was used in pre-concentration of some trace metals from seawater (Moghimi et al, 2009).…”

Extraction of Trace Amounts Copper (II) Using Octadecyl Silica Membrane Disks Modified Isocyanate-Treated GOs (iGOs)

“…This can be performed simply in many ways including liquid and solid phase extraction techniques (Nambiar et al, 1998;Caroli et al, 1991). The application of solid phase extraction technique for pre-concentration of trace metals from different samples results in several advantages such as the minimal waste generation, reduction of sample matrix effects as well as adsorption of the target species on the solid surface in a more stable chemical form (Alexandrova et al, 1993) .…”

Solid Phase extraction for trace amount Cu (II) by C18 modified carbon Nano tube and cupferron ligand in waste water Sample and determination it by flame atomic adsorption.

“…extraction technique for pre-concentration of trace metals from different samples results in several advantages such as the minimal waste generation, reduction of sample matrix effects as well as adsorption of the target species on the solid surface in a more stable chemical form (Alexandrova et al, 1993) .…”

“…Amongst these sulfur-containing compounds are dithiocarbamate derivatives for selective extraction of copper(II) (Mahmoud 1999;Mahmoud 1998) and preconcentration of various cations (Leyden et al, 1976;Tehrani et al, 2005) and 2-mercaptobenzothiazol-modified silica gel for on-line pre-concentration and separation of silver for atomic absorption spectrometric determinations . Ammonium hexa-hydroazepin-1-dithiocarboxylate (HMDC)-loaded on silica gel as solid phase pre-concentration column for atomic absorption spectrometry (AAS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) was reported (Alexandrova et al, 1993). Mercapto-modified silica gel phase was used in preconcentration of some trace metals from seawater In this study, we report the synthesis of this new sorbent and its application as a selective sorbent for separation.…”