Selective Separation of Radiocesium from Complex Aqueous Matrices Using Dual Solid-Phase Extraction Systems

2021 ◽  
pp. 462476
Author(s):  
Ismail M.M. Rahman ◽  
Yan Ye ◽  
M. Ferdous Alam ◽  
Hikaru Sawai ◽  
Zinnat A. Begum ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Selective Separation ◽  
Phase Extraction ◽  
Aqueous Matrices

scholarly journals Selective separation of arsenic species from aqueous solutions with immobilized macrocyclic material containing solid phase extraction columns

Chemosphere ◽  
2011 ◽  
Vol 82 (4) ◽  
pp. 549-556 ◽  
Author(s):  
Ismail M.M. Rahman ◽  
Zinnat A. Begum ◽  
Masayoshi Nakano ◽  
Yoshiaki Furusho ◽  
Teruya Maki ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Aqueous Solutions ◽  
Solid Phase ◽  
Arsenic Species ◽  
Selective Separation ◽  
Phase Extraction

scholarly journals A silica gel-bound macrocycle system for the selective separation of toxic cadmium from metal-affluent aqueous matrix

2013 ◽  
Vol 11 (3) ◽  
pp. 341-347 ◽  
Author(s):  
Hiroshi Hasegawa ◽  
Ismail Rahman ◽  
Zinnat Begum ◽  
Yoshihiro Umehara ◽  
Teruya Maki ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Solid Phase Extraction ◽  
Natural Waters ◽  
Solid Phase ◽  
Selective Separation ◽  
Phase Extraction ◽  
Solution Ph ◽  
Retention Capacity ◽  
Flow Rates ◽  
Ph Range

AbstractAbstract Selective separation of cadmium(II) on a macrocycle immobilized solid phase extraction (SPE) system namely AnaLig Cd-01, and commonly known as molecular recognition technology (MRT) gel, have been examined. The MRT-SPE able to retain the cadmium from the metal-affluent aqueous matrix at the pH range of 2 to 8, and the captured species can be recovered via elution with 1 and 6 M HNO3. Besides the effects of solution pH and eluent concentration, the impacts of sample loading flow rates and coexisting matrix ions were also investigated and optimized. The Cd(II) retention capacity of the MRT-SPE was 0.26 mmol g-1, and it can be reused for more than 100 loading and elution cycles. The Cd(II) recovery attained from the metal-spiked natural waters was satisfactory (95.3–98.1%). However, the Cd(II) retention ability of the MRT-SPE was significantly decreased when excess of chelant remain in the aqueous waste matrix. Graphical abstract

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