PMID- 29495660
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20190211
LR  - 20190215
IS  - 1520-6882 (Electronic)
IS  - 0003-2700 (Linking)
VI  - 90
IP  - 7
DP  - 2018 Apr 3
TI  - An Image Auxiliary Method for Quantitative Analysis of Laser-Induced Breakdown 
      Spectroscopy.
PG  - 4686-4694
LID - 10.1021/acs.analchem.7b05284 [doi]
AB  - Improving both the stability and accuracy of laser-induced breakdown spectroscopy 
      (LIBS) is an issue in quantitative analysis. For certain environments outside of 
      the laboratory, consistently and exactly maintaining the distance from the 
      optical system to the sample surface is difficult, and fluctuations of this 
      distance severely affect the stability of the spectrum. In this work, the 
      principal components of the plasma images are extracted and used to correct the 
      spectral line intensities as an auxiliary method to reduce spectral fluctuation. 
      The presented image auxiliary method is combined with univariate analysis and 
      multivariate analysis, and the element concentrations of Cu, Mn, V, and Cr in 
      steel samples are analyzed. For univariate analysis, all the determination 
      coefficients ( R(2)) of the four elements exceed 0.99, whereas the average 
      relative standard deviations (RSDs) of the intensities decrease from 30.45, 
      23.14, 27.03, and 22.04%, to 2.13, 3.38, 2.49, and 3.58%, respectively. For the 
      multivariate analysis, the R(2) values for Cu, Mn, V, and Cr also all exceed 
      0.99, and the average RSDs of the predicted concentrations of the validation 
      samples decrease to 2.87, 3.82, 2.86, and 6.51%, respectively.
FAU - Zhang, Peng
AU  - Zhang P
AUID- ORCID: 0000-0003-4524-0262
AD  - University of Chinese Academy of Sciences , Beijing 100049 , China.
FAU - Sun, Lanxiang
AU  - Sun L
FAU - Yu, Haibin
AU  - Yu H
FAU - Zeng, Peng
AU  - Zeng P
FAU - Qi, Lifeng
AU  - Qi L
FAU - Xin, Yong
AU  - Xin Y
AD  - University of Chinese Academy of Sciences , Beijing 100049 , China.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20180313
PL  - United States
TA  - Anal Chem
JT  - Analytical chemistry
JID - 0370536
EDAT- 2018/03/03 06:00
MHDA- 2018/03/03 06:01
CRDT- 2018/03/03 06:00
PHST- 2018/03/03 06:00 [pubmed]
PHST- 2018/03/03 06:01 [medline]
PHST- 2018/03/03 06:00 [entrez]
AID - 10.1021/acs.analchem.7b05284 [doi]
PST - ppublish
SO  - Anal Chem. 2018 Apr 3;90(7):4686-4694. doi: 10.1021/acs.analchem.7b05284. Epub 
      2018 Mar 13.