TY - JOUR
T1 - Ionization of pesticides using a far-ultraviolet femtosecond laser in gas chromatography/time-of-flight mass spectrometry
AU - Hashiguchi, Yuichi
AU - Zaitsu, Shin Ichi
AU - Imasaka, Totaro
N1 - Funding Information:
Acknowledgments This research was supported by a Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS KAKENHI Grant Numbers 23245017 and 24510227). This study was also supported by the Steel Industry Foundation for the Advancement of Environmental Protection Technology. The authors thank Dr. Koji Takahashi of Fukuoka Institute of Health and Environmental Science for supplying us with the real vegetable samples prepared in his institute.
PY - 2013/9
Y1 - 2013/9
N2 - The fourth harmonic emission (200 nm) of a femtosecond Ti:sapphire laser (35 fs) was generated and used in the multiphoton ionization of 49 pesticides in gas chromatography/time-of-flight mass spectrometry. The limit of detection was improved when the ionization source from the third harmonic emission (267 nm) was replaced with the fourth harmonic emission for several pesticide molecules that contained no conjugated double bonds since their absorption bands are located in the far-ultraviolet region. This analytical instrument was used in the analysis of a series of real samples including potatoes, carrots, and cabbage, and a signal suspected to arise from di-allate was observed for the potato sample.
AB - The fourth harmonic emission (200 nm) of a femtosecond Ti:sapphire laser (35 fs) was generated and used in the multiphoton ionization of 49 pesticides in gas chromatography/time-of-flight mass spectrometry. The limit of detection was improved when the ionization source from the third harmonic emission (267 nm) was replaced with the fourth harmonic emission for several pesticide molecules that contained no conjugated double bonds since their absorption bands are located in the far-ultraviolet region. This analytical instrument was used in the analysis of a series of real samples including potatoes, carrots, and cabbage, and a signal suspected to arise from di-allate was observed for the potato sample.
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U2 - 10.1007/s00216-013-6976-0
DO - 10.1007/s00216-013-6976-0
M3 - Article
C2 - 23624954
AN - SCOPUS:84883464139
SN - 1618-2642
VL - 405
SP - 7053
EP - 7059
JO - Analytical and Bioanalytical Chemistry
JF - Analytical and Bioanalytical Chemistry
IS - 22
ER -