Quantitative analysis of heavy metals in automotive brake linings: A comparison between wet-chemistry based analysis and in-situ screening with a handheld X-ray fluorescence spectrometer

2010 ◽  
Vol 676 (1-2) ◽  
pp. 46-52 ◽  
Author(s):  
R. Figi ◽  
O. Nagel ◽  
M. Tuchschmid ◽  
P. Lienemann ◽  
U. Gfeller ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Quantitative Analysis ◽  
Wet Chemistry ◽  
X Ray ◽  
Fluorescence Spectrometer ◽  
Automotive Brake

The application of the in situ high-temperature X-ray diffraction quantitative analysis

2008 ◽  
Vol 452 (2) ◽  
pp. 446-450 ◽  
Author(s):  
Qiuguo Xiao ◽  
Ling Huang ◽  
Hui Ma ◽  
Xinhua Zhao
Keyword(s):  
High Temperature ◽  
Quantitative Analysis ◽  
X Ray Diffraction ◽  
X Ray

Determination of Nickel(II) Oxide in Ceramic Pigments by In Situ X-ray Diffraction Quantitative Analysis

1999 ◽  
Vol 82 (9) ◽  
pp. 2566-2568 ◽  
Author(s):  
Alessandro F. Gualtieri ◽  
Edoardo Mazzucato ◽  
Paolo Venturelli ◽  
Alberto Viani ◽  
Paolo Zannini ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Ceramic Pigments ◽  
X Ray Diffraction ◽  
X Ray ◽  
Determination Of Nickel

scholarly journals In situ metalation of free base phthalocyanine covalently bonded to silicon surfaces

2014 ◽  
Vol 5 ◽  
pp. 2222-2229 ◽  
Author(s):  
Fabio Lupo ◽  
Cristina Tudisco ◽  
Federico Bertani ◽  
Enrico Dalcanale ◽  
Guglielmo G Condorelli
Keyword(s):  
Porous Silicon ◽  
Photoelectron Spectroscopy ◽  
Relevant Information ◽  
Silicon Surfaces ◽  
Porous Si ◽  
Wet Chemistry ◽  
X Ray ◽  
Covalently Bonded ◽  
Phthalocyanine Ring

Free 4-undecenoxyphthalocyanine molecules were covalently bonded to Si(100) and porous silicon through thermic hydrosilylation of the terminal double bonds of the undecenyl chains. The success of the anchoring strategy on both surfaces was demonstrated by the combination of X-ray photoelectron spectroscopy with control experiments performed adopting the commercially available 2,3,9,10,16,17,23,24-octakis(octyloxy)-29H,31H-phthalocyanine, which is not suited for silicon anchoring. Moreover, the study of the shape of the XPS N 1s band gave relevant information on the interactions occurring between the anchored molecules and the substrates. The spectra suggest that the phthalocyanine ring interacts significantly with the flat Si surface, whilst ring–surface interactions are less relevant on porous Si. The surface-bonded molecules were then metalated in situ with Co by using wet chemistry. The efficiency of the metalation process was evaluated by XPS measurements and, in particular, on porous silicon, the complexation of cobalt was confirmed by the disappearance in the FTIR spectra of the band at 3290 cm−1 due to –NH stretches. Finally, XPS results revealed that the different surface–phthalocyanine interactions observed for flat and porous substrates affect the efficiency of the in situ metalation process.

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