Analysis of formaldehyde and acrolein in the aqueous samples using a novel needle trap device containing nanoporous silica aerogel sorbent.
In this research, a needle trap device (NTD) packed with nanoporous silica aerogel as a sorbent was used as a new technique for sampling and analysis of formaldehyde and acrolein compounds in aqueous and urine samples. The obtained results were compared with those of the commercial sorbent Carboxen1000. Active sampling was used and a 21-G needle was applied for extraction of gas in the sample headspace. The optimization of experimental parameters like salt addition, temperature and desorption time was done and the performance of the NTD for the extraction of the compounds was evaluated. The optimum temperature and time of desorption were 280 °C and 2 min, respectively. The ranges of limit of detection, limit of quantification and relative standard deviation (RSD) were 0.01-0.03 μg L-1, 0.03-0.1 μg L-1and 2.8-7.3%, respectively. It was found that the NTD containing nanoporous silica aerogel had a better performance. Thus, this technique can be applied as an effective and reliable method for sampling and analysis of aldehyde compounds from different biological matrices like urine, exhalation and so on.
Department of Occupational Health, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Abdullah
A
Barkhordari
Safety Promotion and Injury Prevention Research Center and Department of Occupational Health, School of Public Health, Shahid Beheshti University of Medical Science, Tehran, Iran. mrazari@sbmu.ac.ir.
Mansour R
MR
Azari
Department of Occupational Health, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Rezvan
R
Zendehdel
Department of Occupational Health, School of Public Health, Guilan University of Medical Sciences, Rasht, Iran.
Mahmoud
M
Heidari
D000171:Acrolein / Q000032:analysis*; D004784:Environmental Monitoring / Q000295:instrumentation* / Q000379:methods; D005557:Formaldehyde / Q000032:analysis*; D058608:Nanopores; D009339:Needles; D012822:Silicon Dioxide / Q000737:chemistry; D013696:Temperature
D005557:Formaldehyde; D012822:Silicon Dioxide; D000171:Acrolein
Acrolein; Aqueous samples; Formaldehyde; Nanoporous silica aerogel; Needle trap device