Short communicationHigh-performance liquid chromatographic determination of N-methylformamide and N-methyl-N-(hydroxymethyl)-formamide in human urine
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Add time:09/08/2019 Source:sciencedirect.com
A reliable high-performance liquid chromatographic (HPLC) method which allows the determination in human urine of two important metabolites of N,N-dimethylformamide (DMF), namely N-methylformamide (MMF) and N-methyl-N-(hydroxymethyl)formamide (DMFOH), is reported. A single-step rapid purification of urine was performed on a C18 solid-phase extraction column and the eluate was injected directly on to the HPLC column. HPLC was carried out isocratically on Aminex Ion Exclusion HPX-87H column using 7.5 · 10−4 M sulphuric acid as the mobile phase with ultraviolet detection at 196 nm. The method is specific, accurate, precise and sufficiently sensitive to be applied to the biological monitoring of MMF and DMFOH in workers exposed to DMF.
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