Sentences with phrase «specific chemical constituents»
Today, through tests such as gas chromatography and mass spectrometry, we can better ascertain the specific chemical constituents of a plant's essential oil.3
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Rather than ordinary spot - testing approaches, which look for unnatural ratios between biological constituents in a single sample or for direct chemical evidence of known doping agents, the passport allows investigators to see the big picture — any deviations from the rider's test - established norm that might result from doping, even if the specific drug or tactic remains unknown.