Determination of aluminium levels in tea and coffee by inductively coupled plasma optical emission spectrometry and graphite furnace atomic absorption spectrometry

The Analyst ◽  
1989 ◽  
Vol 114 (8) ◽  
pp. 911 ◽  
Author(s):  
Klaus R. Koch ◽  
M. A. Bruno Pougnet ◽  
Stephanie De Villiers
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Inductively Coupled Plasma ◽  
Graphite Furnace ◽  
Optical Emission ◽  
Absorption Spectrometry ◽  
Emission Spectrometry ◽  
Inductively Coupled ◽  
Graphite Furnace Atomic Absorption ◽  
Plasma Optical Emission Spectrometry

scholarly journals Performance Parameters of Inductively Coupled Plasma Optical Emission Spectrometry and Graphite Furnace Atomic Absorption Spectrometry Techniques for Pd and Pt Determination in Automotive Catalysts

Materials ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5136
Author(s):  
Marin Senila ◽  
Oana Cadar ◽  
Lacrimioara Senila ◽  
Sarah Böringer ◽  
Karine Seaudeau-Pirouley ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Graphite Furnace ◽  
Optical Emission ◽  
Absorption Spectrometry ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
Inductively Coupled ◽  
Graphite Furnace Atomic Absorption ◽  
Plasma Optical Emission Spectrometry

Palladium (Pd) and platinum (Pt) are extensively used as catalysts in the petrochemical and automotive industries, and due to high demand for them on the market, their recycling from spent supported catalysts is clearly needed. To assess the content of Pd and Pt in catalysts in order to establish their commercial value or to evaluate the recovery efficiency of technologies used for recycling, reliable analytical methods for determination of these elements are required. Spectrometric methods, such as inductively coupled plasma optical emission spectrometry (ICP-OES) and graphite furnace atomic absorption spectrometry (GFAAS) are powerful tools that can be employed for the determination of Pd and Pt in various sample matrices. However, these methods allow only the injection of liquid samples. In this regard, the digestion of solid sample by microwave-assisted acid extraction procedures at high pressures and temperatures is often used. In this study, a microwave acid digestion method was optimized for the extraction of Pd and Pt from spent catalysts, using a four-step program, at a maximum 200 °C. The resulting solutions were analyzed using ICP-OES, at two different wavelengths for each metal (Pd at 340.458 and 363.470 nm, and Pt at 265.945 and 214.423 nm, respectively) and using GFAAS (Pd at 247.64 nm, Pt at 265.94 nm). Five types of spent catalyst were analyzed and the standard deviations of repeatability for five parallel samples were less than predicted relative standard deviations (PRSD%) calculated using Horvitz’s equation for all the analyzed samples.

Sign in / Sign up

Export Citation Format

Share Document