Evidence for the lack of a carrier effect in the solvent extraction and determination of octopamine by gas chromatography mass spectrometry

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Abstract
It has been shown that there is no significant carrier effect when low levels of [3H]octopamine (100 pg) are extracted by ethyl acetate from aqueous solutions containing a 103 or 106 times excess of unlabelled octopamine. It is also shown that there is no carrier effect when low levels of octopamine as the tetrakis‐TMS derivative are injected with 100 times the amount of the [2H3] analogue on an SE 30 column.