Development of a Needle Trap Device Packed with HKUST-1 Sorbent for Sampling and Analysis of BTEX in Air

In this study, we developed a needle trap device packed with HKUST-1 (Cu-based metal-organic framework) for the sampling and analysis of benzene, toluene, ethylbenzene, xylene (BTEX) in ambient air first time. The was synthesized via electrochemical process. Afterwards, adsorbent into 22 gauge needles. To provide different concentrations BTEX, syringe pump connected to glass chamber inject specific rate BTEX compounds. Design-expert software (version 7) used optimize analytical parameters including breakthrough volume, desorption conditions conditions. best were achieved at 548 K 6 min, determined 309 temperature 20 % relative humidity. According results, limit quantification (LOQ) detection (LOD) (NTD) range 0.52–1.41 0.16–0.5 mg/m3, respectively. addition, repeatability reproducibility method calculated be 5.5–13.2 5.3–12.3 %, needles stored refrigerator (>277 K) room (298 showed that NTD can store analytes least 10 days, Our findings indicated sorbent as trustworthy useful technique determination air.