Selective Preconcentration of Ultra Trace Amounts of Cobalt and Nickel on Octadecyl Bonded Silica Membrane Disk Modified with Thioridazine?Hcl and Determination by Inductively Coupled Plasma-Optical Emission Spectrometry

2007 ◽  
Vol 4 (1) ◽  
pp. 43-50 ◽  
Author(s):  
ALI MOGHIMI ◽  
HOSSEIN AREF-AZAR
Keyword(s):  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Optical Emission Spectrometry ◽  
Emission Spectrometry ◽  
Silica Membrane ◽  
Inductively Coupled ◽  
Plasma Optical Emission Spectrometry ◽  
Ultra Trace ◽  
Membrane Disk ◽  
Cobalt And Nickel

Hydride Preconcentration for Inductively Coupled Plasma Optical Emission Spectrometry

1979 ◽  
Vol 33 (4) ◽  
pp. 399-404 ◽  
Author(s):  
R. C. Fry ◽  
M. B. Denton ◽  
D. L. Windsor ◽  
S. J. Northway
Keyword(s):  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Optical Emission Spectrometry ◽  
Emission Spectrometry ◽  
Inductively Coupled ◽  
Arsenic Detection ◽  
Plasma Optical Emission Spectrometry ◽  
Ultra Trace ◽  
Arsenic Determination ◽  
By Products

Studies are presented describing an improved application of the NaBH4 reduction of soluble arsenite to form arsine as a preconcentration approach for ultra-trace level arsenic determination by inductively coupled plasma optical emission spectrometry. Specialized analyte introduction techniques are described for elimination of reaction by-products that would normally extinguish a medium power plasma discharge. An approach is presented to minimize the need for background correction and facilitate a superior arsenic detection limit (≤0.03 ng/ml) in a relatively inexpensive 1.2 kW inductively coupled plasma system.

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