Multivariate optimization of mercury determination by flow injection-cold vapor generation-inductively coupled plasma optical emission spectrometry

The Analyst ◽  
2012 ◽  
Vol 137 (19) ◽  
pp. 4458 ◽  
Author(s):  
Vanessa Cristina Gonçalves dos Santos ◽  
Marco Tadeu Grassi ◽  
Mônica Soares de Campos ◽  
Patricio Guillermo Peralta-Zamora ◽  
Gilberto Abate
Keyword(s):  
Flow Injection ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Emission Spectrometry ◽  
Mercury Determination ◽  
Multivariate Optimization ◽  
Vapor Generation ◽  
Inductively Coupled ◽  
Cold Vapor Generation ◽  
Plasma Optical Emission Spectrometry

Analytical Performance in Flow Injection—Simultaneous Multielement—Inductively Coupled Plasma—Optical Emission Spectrometry Employing a Cyclonic Spray Chamber

1996 ◽  
Vol 50 (8) ◽  
pp. 1015-1022 ◽  
Author(s):  
Terrance D. Hettipathirana ◽  
David E. Davey
Keyword(s):  
Flow Rate ◽  
Flow Injection ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Analytical Performance ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
Spray Chamber ◽  
Inductively Coupled ◽  
Plasma Optical Emission Spectrometry

Simultaneous multielement–inductively coupled plasma–optical emission spectrometry (ICP-OES) with flow injection (FI) and a small-volume cyclonic spray chamber is described. Analytical performance of FI-ICP-OES was studied with the use of a concentric nebulizer and the cyclonic spray chamber for carrier nebulization. A noise study using Fourier transformation analysis was also carried out to identify the factors that affect the analytical figures of merit of FI-ICP-OES. At a carrier flow rate of 1.0 mL/min, the major source of noise, between 0 and 15 Hz, was the peristaltic pump's roller rotation; this pump noise disappeared at a flow rate of 3.5 mL/min. A number of other discrete low-frequency noise sources were also observed at flow rates below 2.5 mL/min, with resultant degradation of precision and detection limit.

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