Formaldehyde detection

Gryllaki-Berger M, Mugny C, Perrenoud D, et al. 1992. A comparative study of formaldehyde detection using chromotropic acid, acetylacetone and HPLC in cosmetics and household cleaning products. 

Methods for the determination of fonnaldehyde in drinking water are available and they utilize the same detection methods as those utilized for the analysis of formaldehyde in air, with LODs reported to be 20 ppb (Tomkins et al. 1989) and 8.1 ppb (EPA 1992b). The MRL for chronic oral exposure to formaldehyde is 0.2 mg/kg/day. If a 70-kg person is assumed, the maximum intake is 14 mg/day. If a daily intake of 2 L of water or 2 kg/day of food per day is assumed, then any analytical method must have an LOD of less than 7 mg/L for water or 7 mg/kg (ppm) for food. The cited methods for detecting formaldehyde in water have LODs far below the needed value and are sensitive enough to measure background levels in the environment no additional methods for formaldehyde detection in water are required. Other than for milk (Kaminski et al. 1993b, LOD=9 ppb), no methods for formaldehyde detection in food were found. Additional methods for detection of formaldehyde in foods are needed. Methods for the detection of formaldehyde in soil are not adequately described in the available literature. 

Prompted by a recent study which showed that EDB could be oxidized under anhydrous conditions to formaldehyde by the action of superoxide ion (29), we fortified water solutions with part-per-million concentrations of EDB, incubated them at elevated temperatures, analyzed them and found them to have low but consistent levels of formaldehyde, but only after all the EDB had been hydrolyzed. Studies conducted with natural and deionized water fortified to 10 ppm with ethylene glycol and incubated at 85°C showed that the amounts of formaldehyde detected varied from about 350 ppb to 2 ppm after 40 days of incubation. These findings... 

Niki, H., P. D. Maker, C. M. Savage, and L. P. Breitenbach. 1980. FTIR studies of the Cl atom initiated oxidation of formaldehyde detection of a new metastable species in the presence of NOj. Chem. Phys. Lett. 72 71-73. 

Figure 6 Formaldehyde detected as oxime derivative in headspace of a dish liquid.

In discussing formaldehyde chemistry, we shall first gi e attention to ] the methods by which it is normally produced. Following this, we shall deal with the physical and thermodynamic properties of the various formaldehyde substances the simple monomer (Chapter II), formaldehyde solutions (Chapters III-VI), and polymers (Chapter VII). Chapters TII-X are de oted to the chemical properties of formaldehyde and its reactions with arious types of inorganic and organic chemicals. Chapters XM and X TI deal mth formaldehyde detection and analysis. 

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