Determination of low-molecule-weight aldehydes in packed drinking water by high performance liquid chromatography
A high performance liquid chromatographic (HPLC) method for the determination of formaldehyde, acetaldehyde and propionaldehyde in packed drinking water was developed. Aldehydes were derivatized with 0.5 mL DNPH (2,4-dinitrophenylhydrazine) reagent and 0.1 mL 2 M perchloride at 55°C in 60 minutes, then adsorbed in C18 glass cartridge (was performed), eluted with 5 mL acetonitrile and finally determined by HPLC. Formaldehyde, acetaldehyde and propionaldehyde-DNPH-derivatives were seperated on a Cosmosil 5C18-MS column by using acetonitrile/D.I. water (55/45, v/v) as a mobile phase, and detected with UV 360 nm. Recovery studies were performed by fortifying D.I. water with formaldehyde, acetaldehyde and propionaldehyde at various concentrations from 2 to 200 ppb. Recovery rates were in the range of 84.4 - 103.2%, 90.2 - 122.1 % and 60.8 - 100.4%. The detection limits for all three aldehydes were 1 ppb. Sixty-three packed drinking water samples collected from various markets were analyzed. These results were well below the guideline for drinking water quality by WHO (900 μg/L).
Tsai, C.-F.; Shiau, H.-W.; Lee, S.-C.; and Chou, S.-S.
"Determination of low-molecule-weight aldehydes in packed drinking water by high performance liquid chromatography,"
Journal of Food and Drug Analysis: Vol. 11
, Article 11.
Available at: https://doi.org/10.38212/2224-6614.2734