| Title: | Development of Carbotrap B-packed needle trap device for determination of volatile organic compounds in air |
| Author(s): | Poormohammadi A; Bahrami A; Farhadian M; Ghorbani Shahna F; Ghiasvand A; |
| Address: | "Center of Excellence for Occupational Health, Research Center for Health Sciences, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran. Center of Excellence for Occupational Health, Research Center for Health Sciences, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran. Electronic address: bahrami@umsha.ac.ir. Department of Biostatistics, School of Public Health and Research Center for Health Sciences, Hamadan University of Medical Sciences, Hamadan, Iran. Department of Chemistry, Lorestan University, Khoramabad, Iran" |
| DOI: | 10.1016/j.chroma.2017.10.062 |
| ISSN/ISBN: | 1873-3778 (Electronic) 0021-9673 (Linking) |
| Abstract: | "Carbotrap B as a highly pure surface sorbent with excellent adsorption/desorption properties was packed into a stainless steel needle to develop a new needle trap device (NTD). The performance of the prepared NTD was investigated for sampling, pre-concentration and injection of benzene, toluene, ethyl benzene, o-xylene, and p-xylene (BTEX) into the column of gas chromatography-mass spectrometry (GC-MS) device. Response surface methodology (RSM) with central composite design (CCD) was also employed in two separate consecutive steps to optimize the sampling and device parameters. First, the sampling parameters such as sampling temperature and relative humidity were optimized. Afterwards, the RSM was used for optimizing the desorption parameters including desorption temperature and time. The results indicated that the peak area responses of the analytes of interest decreased with increasing sampling temperature and relative humidity. The optimum values of desorption temperature were in the range 265-273 degrees C, and desorption time were in the range 3.4-3.8min. The limits of detection (LODs) and limits of quantitation (LOQs) of the studied analytes were found over the range of 0.03-0.04ng/mL, and 0.1-0.13ng/mL, respectively. These results demonstrated that the NTD packed with Carbotrap B offers a high sensitive procedure for sampling and analysis of BTEX in concentration range of 0.03-25ng/mL in air" |
| Keywords: | Adsorption Air/*analysis Air Pollutants/*analysis Environmental Monitoring/*instrumentation/*methods Gas Chromatography-Mass Spectrometry Limit of Detection Needles Temperature Volatile Organic Compounds/*analysis Air Carbotrap B Needle trap device Respon; |
| Notes: | "MedlinePoormohammadi, Ali Bahrami, Abdulrahman Farhadian, Maryam Ghorbani Shahna, Farshid Ghiasvand, Alireza eng Netherlands 2017/11/02 J Chromatogr A. 2017 Dec 8; 1527:33-42. doi: 10.1016/j.chroma.2017.10.062. Epub 2017 Oct 26" |
