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  • 한국과학기술정보연구원(KISTI) 서울분원 대회의실(별관 3층)
  • 2024년 07월 03일(수) 13:30
 

  • P-ISSN2233-4203
  • E-ISSN2093-8950
  • ESCI, SCOPUS, KCI

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  • P-ISSN 2233-4203
  • E-ISSN 2093-8950

Inspection of the Fragmentation Pathway for Thiamethoxam

Mass Spectrometry Letters / Mass Spectrometry Letters, (P)2233-4203; (E)2093-8950
2017, v.8 no.3, pp.65-68
https://doi.org/10.5478/MSL.2017.8.3.65
Sunwoong Son (Korea Research Institute of Standard and Science)
Byungjoo Kim (Korea Research Institute of Standard and Science)
Soenghee Ahn (Korea Research Institute of Standard and Science)
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Abstract

Thiamethoxam is one of the main suspect in honeybee colony collapse disorder (CCD). Due to this reason, thiamethoxam including imidacloprid and clothianidin has been banned for two years in some Europe countries. The CCD phe-nomenon has also been reported in Korea. Regarding this issue and needs, a new project has started to develop the method for the quatitation of thiamethoxam using isotope dilution mass spectrometry (IDMS). In the process of optimization for the IDMS method with thiamethoxam and thiamethoxam-d 3 , we observed that the fragment peaks did not correspond to the fragmentation pathway as published elsewhere. Here, we proposed a candidate fragmentation pathway. To validate the proposed fragmentation pathway, another isotope analogue, thiamethoxam-d 4 , was introduced and the MS/MS spectra of both isotope analogues were compared. In addition, the MS/MS/MS spectra of thiamethoxam were inspected for more evidence of the candidate pathway. Those spectra indicated that the proposed fragmentation pathway could be used to assign the fragment peaks of thiamethoxam.

keywords
neonicotinoid insecticide, thiamethoxam, thiamethoxam-d 3, thiamethoxam-d 4, fragmentation pathway, isotope dilution mass spectrometry


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투고일Submission Date
2017-08-03
수정일Revised Date
2017-09-20
게재확정일Accepted Date
2017-09-20
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