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Some new aspects of a HPLC-method for the determination of traces of formaldehyde in air

Einige neue Aspekte einer HPLC-Methode zur Spurenbestimmung von Formaldehyd in Luft

  • Original Papers
  • Organic trace analysis
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Summary

A practicable method was developed for the routine determination of formaldehyde in air. Formaldehyde is sampled in small sampling tubes filled with Chromosorb P, coated with 2,4-dinitrophenylhydrazine (= DNPH). The sorbent is extracted with acetonitrile, and the different DNPhydrazones were separated by reversed-phase HPLC. UV-detection at γ = 345 nm was compared with electrochemical detection. The detection limit was 100 pg for UV- and 50 pg for electrochemical detection with a linear range of more than 3 decades, respectively. For the determination of formaldehyde in air the detection limit is 10 ppb with an average recovery of 99.3% and an estimated relative standard deviation S of 1.5%. This method was compared with the sampling by impingers using the same separation and detection method.

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Dedicated to Prof. Dr. G. Tölg on the occasion of his 60th birthday

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Grömping, A., Cammann, K. Some new aspects of a HPLC-method for the determination of traces of formaldehyde in air. Z. Anal. Chem. 335, 796–801 (1989). https://doi.org/10.1007/BF01204090

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  • DOI: https://doi.org/10.1007/BF01204090

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