Abstract
The aim of this work was to evaluate the capabilities and feasibility of using the averaged mass spectra obtained from pyrograms for assessing the group distributions and similarities of vehicle paint samples. To achieve this, all the profiles of averaged mass spectra were examined using hierarchical cluster analysis and principal component analysis after data processing. The pyrograms of 54 vehicle top coating samples were characterized by mass fragments chosen from 15 major paint constituents commonly used in the paint industry and multivariate chemometric analysis based on 76 variables, used as indicators for the classification of paint samples. Not only the characteristics of the variables were discussed, but the discriminating power among the samples was also evaluated by adding six blind test samples. In addition, validation of this method was accomplished by mixing three sets of international proficiency test samples and 23 randomly selected paired samples for comparison purposes, and the results of these gave the expected discriminating capability of the technique developed. The results indicated that this method was a promising, efficient and time saving tool for examining top-coating paint traces, with the application of combined pyrolysis-gas chromatography/mass spectroscopy with multivariate chemometrics for forensic purposes.
| Original language | English |
|---|---|
| Pages (from-to) | 1527-1534 |
| Number of pages | 8 |
| Journal | Analytical Methods |
| Volume | 7 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2015 Feb 21 |
Fingerprint
ASJC Scopus subject areas
- Analytical Chemistry
- Chemical Engineering(all)
- Engineering(all)
Cite this
Differentiation of vehicle top coating paints using pyrolysis-gas chromatography/mass spectrometry and multivariate chemometrics with statistical comparisons. / Yang, Sheng Hsiung; Shen, Jermiah Y.; Chang, Matt S.; Wu, Gaston J. C.
In: Analytical Methods, Vol. 7, No. 4, 21.02.2015, p. 1527-1534.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Differentiation of vehicle top coating paints using pyrolysis-gas chromatography/mass spectrometry and multivariate chemometrics with statistical comparisons
AU - Yang, Sheng Hsiung
AU - Shen, Jermiah Y.
AU - Chang, Matt S.
AU - Wu, Gaston J. C.
PY - 2015/2/21
Y1 - 2015/2/21
N2 - The aim of this work was to evaluate the capabilities and feasibility of using the averaged mass spectra obtained from pyrograms for assessing the group distributions and similarities of vehicle paint samples. To achieve this, all the profiles of averaged mass spectra were examined using hierarchical cluster analysis and principal component analysis after data processing. The pyrograms of 54 vehicle top coating samples were characterized by mass fragments chosen from 15 major paint constituents commonly used in the paint industry and multivariate chemometric analysis based on 76 variables, used as indicators for the classification of paint samples. Not only the characteristics of the variables were discussed, but the discriminating power among the samples was also evaluated by adding six blind test samples. In addition, validation of this method was accomplished by mixing three sets of international proficiency test samples and 23 randomly selected paired samples for comparison purposes, and the results of these gave the expected discriminating capability of the technique developed. The results indicated that this method was a promising, efficient and time saving tool for examining top-coating paint traces, with the application of combined pyrolysis-gas chromatography/mass spectroscopy with multivariate chemometrics for forensic purposes.
AB - The aim of this work was to evaluate the capabilities and feasibility of using the averaged mass spectra obtained from pyrograms for assessing the group distributions and similarities of vehicle paint samples. To achieve this, all the profiles of averaged mass spectra were examined using hierarchical cluster analysis and principal component analysis after data processing. The pyrograms of 54 vehicle top coating samples were characterized by mass fragments chosen from 15 major paint constituents commonly used in the paint industry and multivariate chemometric analysis based on 76 variables, used as indicators for the classification of paint samples. Not only the characteristics of the variables were discussed, but the discriminating power among the samples was also evaluated by adding six blind test samples. In addition, validation of this method was accomplished by mixing three sets of international proficiency test samples and 23 randomly selected paired samples for comparison purposes, and the results of these gave the expected discriminating capability of the technique developed. The results indicated that this method was a promising, efficient and time saving tool for examining top-coating paint traces, with the application of combined pyrolysis-gas chromatography/mass spectroscopy with multivariate chemometrics for forensic purposes.
UR - http://www.scopus.com/inward/record.url?scp=84923195565&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84923195565&partnerID=8YFLogxK
U2 - 10.1039/c4ay02730b
DO - 10.1039/c4ay02730b
M3 - Article
AN - SCOPUS:84923195565
VL - 7
SP - 1527
EP - 1534
JO - Analytical Methods
JF - Analytical Methods
SN - 1759-9660
IS - 4
ER -