Detection of adulterated drugs in traditional Chinese medicine and dietary supplements using hydrogen as a carrier gas - PubMed (original) (raw)
Detection of adulterated drugs in traditional Chinese medicine and dietary supplements using hydrogen as a carrier gas
Yen-Ping Lin et al. PLoS One. 2018.
Abstract
Helium, a minor component of natural gas and radioactive minerals, is most commonly used as a carrier in gas chromatography-mass spectrometry (GC-MS). Its scarcity leads to limited availability and higher costs. In this experiment, hydrogen from a safe source of a hydrogen generator was tested as a substitutive carrier gas for the detection of adulterant in traditional Chinese medicine (TCM) and food supplements by GC-MS analysis. We found that the limits of detection (LODs) of using hydrogen were from 10 to 1000 μg/g. The levels of LODs tested among 170 drugs remain the same whether hydrogen or helium was used as a carrier gas with the exception of 7 drugs-benzbromarone, estradiol benzoate, bezafibrate, mefenamic acid, oxymetholone, piperidenafil and cetilistat. The real sample analysis results using hydrogen were as satisfactory as those using helium. In addition, the retention time was shortened after the chromatographic performance was optimized. In summary, it is worth considering hydrogen as a carrier gas due to its affordable costs, energy efficiency, carbon reduction and chromatographic advantages to detect adulterated drugs in TCM and dietary supplement using GC-MS.
Conflict of interest statement
The authors have declared that no competing interests exist.
Figures
Fig 1
Ion chromatogram of chlorzoxazone when (A) hydrogen and (B) helium is used as a carrier gas.
Fig 2
Mass spectrum of chlorzoxazone when (A) hydrogen and (B) helium is used as a carrier gas.
Fig 3
Ion chromatogram of sildenafil when (A) hydrogen and (B) helium is used as a carrier gas.
Fig 4
Mass spectrum of sildenafil when (A) hydrogen and (B) helium is used as a carrier gas.
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This work was supported by the Tainan City Government. The funder had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
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