Preconcentration and ultra-trace determination of hexavalent chromium ions using tailor-made polymer nanoparticles coupled with graphite furnace atomic absorption spectrometry: ultrasonic assisted-dispersive solid-phase extraction

2018 ◽  
Vol 42 (12) ◽  
pp. 10357-10365 ◽  
Author(s):  
Samira Parvizi ◽  
Mohammad Behbahani ◽  
Fatemeh zeraatpisheh ◽  
Ali Esrafili

We describe ultrasonic assisted-dispersive solid-phase extraction based on tailor-made polymer (UA-DSPE-TMP) nanoparticles for selective extraction of Cr(vi) ions.

Author(s):  
J. C. García-Mesa ◽  
P. Montoro-Leal ◽  
S. Maireles-Rivas ◽  
M. M. López Guerrero ◽  
E. Vereda Alonso

The preconcentration of Hg through MDSPE and cold vapor (CV) resulted in an excellent LOD.


2015 ◽  
Vol 7 (5) ◽  
pp. 2093-2099 ◽  
Author(s):  
Wei Xiong ◽  
Chunsheng Cheng ◽  
Yaling Yang

A method to separate and preconcentrate trace levels of chromium using silver nanoparticle (Ag NP) technology and suspension dispersive solid phase extraction is proposed.


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