Development of a newly large-volume injection system for dioxin determinations in blood of Yusho patients.

Takashi Todaka, Hiroshi Uchi, Hironori Hirakawa, Jumboku Kajiwara, Masutaka Furue

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We developed a more effective method to measure the concentrations of polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and non-ortho-coplanar polychlorinated biphenyls (non-ortho PCBs) in the blood of Yusho patients using high-resolution gas chromatography/high-resolution mass spectrometry (HRGC/HRMS) equipped with a newly large-volume injection system. The new injection system linked a LaviStoma system with a unique stomach-shaped inlet liner (SSIL) and a solvent-cut large-volume (SCLV) injection system. This approach made it possible to introduce volumes up to 200 microl into the HRGC/HRMS in comparison with the 20microl volume of the previously reported conventional SCLV method. Based on experiments conducted using the same blood sample, the concentrations of PCDDs, PCDFs, and non-ortho PCBs obtained by the developed method showed a close correlation to that by the conventional SCLV method. By improving the injection method, the operation time and labor for the purification procedure from blood could be reduced. Furthermore, the developed method was more effective than the conventional SCLV method for recovery of PCDDs, PCDFs, and non-ortho PCBs.

Original languageEnglish
Pages (from-to)110-117
Number of pages8
JournalUnknown Journal
Issue number4
Publication statusPublished - Apr 2013

All Science Journal Classification (ASJC) codes

  • General Medicine


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