Abstract:For the fluorometric determination of picolinic acid in human serum, HPLC-postcolumn UV irradiation using zinc acetate has been developed. Picolinic acid in serum sample was separated on a Capcell Pak C18. The mobile phase consisted of 0.1 mol/L sodium phosphate solution (adjusted to pH 3.0) containing 3.0 mmol/L zinc acetate and 3.5 mmol/L trimethylamine, and delivered at a flow rate of 0.8 mL/minutes. In order to stabilize the retention time (6.5 minutes), a back pressure tube (0.4 m × 0.13 mm i.d.) was atta… Show more
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