title: Gas chromatographic-mass spectrometric analysis of formaldehyde in ambient air using a sampling tube.
abstract: A gas chromatographic-mass spectrometric technique for the analysis of trace concentrations of formaldehyde in air is described. Molecular Sieve 13X was found to be an excellent adsorbent. The collected samples were thermally desorbed onto the analytical column (Porapak T) for separation, and quantified by mass fragmentography (m/e 29 and 30). Advantages of the technique include ppb sensitivity, selectivity and quantitative recovery. Experimental results are given for air samples in a rural area.
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D005557:Formaldehyde / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods
chemical_list: D000393:Air Pollutants; D005557:Formaldehyde