scholarly journals Solid-phase Extraction of High Oxidation State Metal Ion-Desferrioxamine B Chelates Using Sulfuric Acid-treated Silica Gel.

2000 ◽  
Vol 16 (4) ◽  
pp. 433-434 ◽  
Author(s):  
Atsushi TAKAHASHI ◽  
Shukuro IGARASHI
Keyword(s):  
Sulfuric Acid ◽  
Solid Phase Extraction ◽  
Oxidation State ◽  
Silica Gel ◽  
Metal Ion ◽  
Solid Phase ◽  
Phase Extraction ◽  
High Oxidation State ◽  
Desferrioxamine B ◽  
High Oxidation

Silica gel surface modified with sulfanilamide for selective solid-phase extraction of Cu(II), Zn(II) and Ni(II)

2009 ◽  
Vol 89 (14) ◽  
pp. 1043-1055 ◽  
Author(s):  
Xiaojun Zou ◽  
Yuemei Cui ◽  
Xijun Chang ◽  
Xiangbing Zhu ◽  
Zheng Hu ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Silica Gel ◽  
Solid Phase ◽  
Phase Extraction ◽  
Surface Modified

scholarly journals Spectrophotometric Determination of Iron(II) after Solid Phase Extraction of Its 2,2′ Bipyridine Complex on Silica Gel-Polyethylene Glycol

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Nahid Pourreza ◽  
Saadat Rastegarzadeh ◽  
Ali Reza Kiasat ◽  
Hossein Yahyavi
Keyword(s):  
Polyethylene Glycol ◽  
Solid Phase Extraction ◽  
Silica Gel ◽  
Limit Of Detection ◽  
Solid Phase ◽  
Extraction Procedure ◽  
Calibration Graph ◽  
Phase Extraction ◽  
Relative Standard

A new solid phase extraction procedure was developed for preconcentration of iron(II) using silica gel-polyethylene glycol (silica-PEG) as an adsorbent. The method is based on retention of iron(II) as 2,2′ bipyridine complex on silica-PEG. The retained complex is eluted by 1.0 mol L−1of sulfuric acid-acetone mixture (1:2) and its absorbance is measured at 518 nm, spectrophotometrically. The effects of different parameters such as pH, concentration of the reagent, eluting reagent, sample volume, amount of adsorbent, and interfering ions were investigated. The calibration graph was linear in the range of 1–60 ng mL−1of iron(II). The limit of detection based on3Sbwas 0.57 ng mL−1and relative standard deviations (R.S.D) for ten replicate measurements of 12 and 42 ng mL−1of iron(II) were 2.4 and 1.7%, respectively. The method was applied to the determination of of iron(II) in water, multivitamin tablet, and spinach samples.

Effective phospholipid removal from plasma samples by solid phase extraction with the use of copper (II) modified silica gel cartridges

2017 ◽  
Vol 1070 ◽  
pp. 1-6 ◽  
Author(s):  
Jolanta Flieger ◽  
Małgorzata Tatarczak-Michalewska ◽  
Anna Kowalska ◽  
Anna Madejska ◽  
Tomasz Śniegocki ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Silica Gel ◽  
Solid Phase ◽  
Phase Extraction ◽  
Plasma Samples ◽  
Modified Silica ◽  
Modified Silica Gel
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