This paper introduced needle traps filled with the new Schiff base network-1/single-walled carbon nanotube (SNW-1/SWCNT) adsorbent for sampling and analyzing phenolic compounds (phenol, 3-chlorophenol, o-cresol, and p-cresol) in air. In this perusal, the SNW-1/SWCNT adsorbent was synthesized and packaged using a 22- gauge spinal needle. This approach was first examined inside the laboratory and then applied in the field for real sampling. A 3-inlet container was placed on a heater at a specific temperature to produce different concentrations of phenolic compounds. The response surface methodology and central composite design methods were used to evaluate the desorption and breakthrough volume parameters of needle trap device packed with SNW-1/SWCNT. The Limit of detection and limit of quantitation values of this technique were 0.002–0.011 ng/ ml and 0.008–0.037 ng/ml, respectively, indicating that the proposed sampler had very high sensitivity. The maximum response of the peak area was obtained at the extraction temperature of 270 ◦C and the extractions time of 5 min. The current technique was compared to the NIOSH-2546 method, and an R2 of 0.9812 was obtained between the two methods. The proposed method was used to determine the concentration of target compounds in the air of a plastic factory. The results showed that the concentration was less than the threshold limit values for phenolic compounds. SNW-1/SWCNTs have selectivity and the proposed method is a one-step procedure for analyzing phenolic compounds from the air.
