Solid chemosorbent for sampling sub-ppm levels of acrolein and glutaraldehyde in air

Derivatization of carbonyl compounds with 2,4-dinitrophenylhydrazine and their subsequent determination by high-performance liquid chromatography

“…A number of cartridge devices containing solid sorbents coated with DNPH have recently been provided for sampling aldehydes. The solid sorbents include XAD-2 [33,34], silica gel [35,36], glass beads [37], octadecylsilane bonded silica gel [38], Florisil [39], and glass fiber filters [40]. In aqueous samples, an acidic solution of DNPH is used to form the corresponding hydrazones followed by high performance liquid chromatography (HPLC) separation and ultraviolet (UV) detection at 360 nm (depending on the absorption maximum wavelength of the hydrazones) [28,[41][42][43] or mass spectrometry (MS) [44][45][46].…”

A passive sampler for formaldehyde in air using 2,4-dinitrophenylhydrazine-coated glass fiber filters

“…For sampling of ambient air, absorber solutions have been most frequently used; these are not suited for field work, however, especially not in personal monitoring. We have previously reported the use of XAD-2 coated with 2,4-dinitrophenylhydrazine (DNPH) for the sampling of several aldehydes, including formaldehyde, acrolein, and glutaraldehyde (8,10,11). Other workers have subsequently used other DNPH-coated solid sorbents (9, [12][13][14][15].…”

Liquid chromatographic determination of hydrazine at sub-parts-per-million levels in workroom air as benzaldazine with the use of chemisorption on benzaldehyde-coated amberlite XAD-2

“…The method utilizes hydrazone formation on an Amberlite XAD-2 adsorbent coated with (2,4-dinitrophenyl)hydrazine hydrochloride. The method has been used for determination of formaldehyde (8, 9), acrolein (10), and glutaraldehyde (10) in air. Another chemosorption method has been developed for monitoring exposure to gaseous diisocyanates (11,13), which utilizes XAD-2 coated with 9-((Ñ-methylamino)methyl) anthracene for the formation of a urea derivative.…”