Separation and analysis of trace volatile formaldehyde in aquatic products by a MoO₃/polypyrrole intercalative sampling adsorbent with thermal desorption gas chromatography and mass spectrometry

Abstract

An in situ embedded synthesis strategy was developed for the preparation of a MoO3 /polypyrrole intercalative sampling adsorbent for the separation and analysis of trace volatile formaldehyde in aquatic products. Structural and morphological characteristics of the MoO3 /polypyrrole intercalative adsorbent were investigated by a series of characterization methods. The MoO3 /polypyrrole sampling adsorbent possessed a higher sampling capacity and selectivity for polar formaldehyde than commonly used commercial adsorbent Tenax TA. Finally, the MoO3 /polypyrrole adsorbent was packed in the thermal desorption tube that was directly coupled to gas chromatography with mass spectrometry for the analysis of trace volatile formaldehyde in aquatic products. Trace volatile formaldehyde from real aquatic products could be selectively sampled and quantified to be 0.43-6.6 mg/kg. The detection limit was achieved as 0.004 μg/L by this method. Good recoveries for spiked aquatic products were achieved in range of 75.0-108% with relative standard deviations of 1.2-9.0%.

Simple high‐performance liquid chromatography method for formaldehyde determination in human tissue through derivatization with 2,4‐dinitrophenylhydrazine

“…Several methods have been reported for the determination of FA including HPLC following a derivatization reaction with 2,4‐dinitrophenylhydrazine (DNPH) . The technique has been reported for analyses of cosmetics , aquatic products , vaccines products , fluorescent products , aqueous extracts, and model mixtures simulating foods . Hyphenated techniques such as GC–MS and LC–MS/MS can be used as a confirmatory technique.…”

The Research Progress of Detection Method of Formaldehyde in Food

“…Ma et al determined trace volatile FA in aquatic products by aMoO 3 /polypyrrole intercalative sampling adsorbent with thermal desorption GC-MS. A good linear range was found in a concentration range from 0.02 to 20.35 µg/L.The detection limit was achieved as 0.004 µg/L by this method. Good recoveries for spiked aquatic products were achieved in range of 75.0-108% with relative standard deviations of 1.2-9.0% [30].…”

The Research Progress of Endogenous Formaldehyde in Aquatic Products

“…The detection limit was achieved as 0.004 µg/L by this method. Good recoveries for spiked aquatic products were achieved in range of 75.0% -108% with relative standard deviations of 1.2% -9.0% [27].…”