Isocyanatocyclohexane and isothiocyanatocyclohexane levels in urban and industrial areas and possible emission-related activities |
| |
| Affiliation: | 1. Laboratori del Centre de Medi Ambient, Universitat Politècnica de Catalunya (LCMA-UPC), Avda. Diagonal 647, E 08028 Barcelona, Spain;2. Centro Nacional de Condiciones de Trabajo, INSHT, Dulcet 2-10, E 08034, Barcelona, Spain;1. Research Group of Analytical Chemistry and Life Sciences, Department of Analytical Chemistry, Campus of Fuentenueva, University of Granada, E-18071 Granada, Spain;2. DNOTA Medio Ambiente S.L.?, Research Department, E-18220 Granada, Spain;1. Operations and Analytics Department, Group Technology R&T, Sasolburg, 1947, South Africa;2. Department of Chemistry, University of Pretoria, Hatfield, Pretoria, 0002, South Africa;1. Dpto. Química y Ciencias de los Materiales “Prof. J.C. Vílchez Martín” Facultad de Ciencias Experimentales, Universidad de Huelva, Campus de Excelencia Internacional Agroalimentario, ceiA3, Avda. Fuerzas Armadas, s/n. 21071 Huelva, Spain;2. Universidad Nacional de Santiago del Estero, Avda. Belgrano (s) 1912, 4200 Santiago del Estero, Argentina;3. IFAPA Centro “Agua del Pino”, Apdo. 104, Huelva, Spain;4. Centro de Investigación en Química Sostenible (CIQSO), Campus El Carmen, Universidad de Huelva, Spain;1. Ghent University, Food2Know, Faculty of Bioscience Engineering, Department of Food Safety and Food Quality, Laboratory of Food Microbiology and Food Preservation, Coupure Links 653, 9000 Gent, Belgium;2. Ege University, Fisheries Faculty, Fish Processing Technology Department, Bornova-Izmir 35100, Turkey |
| |
| Abstract: | Isocyanatocyclohexane and isothiocyanatocyclohexane are becoming relevant compounds in urban and industrial air, as they are used in important amounts in automobile industry and building insulation, as well as in the manufacture of foams, rubber, paints and varnishes. Glass multi-sorbent tubes (Carbotrap, Carbopack, Carboxen) were connected to LCMA-UPC pump samplers for the retention of iso- and isothiocyanatocyclohexanes. The analysis was performed by automatic thermal desorption (ATD) coupled with capillary gas chromatography (GC)/mass spectrometry detector (MSD). TD-GC/MS was chosen as analytical method due to its versatility and the possibility of analysis of a wide range of volatility and polarity VOC in air samples. The method was satisfactory sensitive, selective and reproducible for the studied compounds. The concentrations of iso- and isothioisocyanatocyclohexanes were evaluated in different urban, residential and industrial locations from extensive VOC air quality and odour episode studies in several cities in the Northeastern edge of Spain. Around 200–300 VOC were determined qualitatively in each sample. Higher values of iso- and isothiocyanatocyclohexane were found in industrial areas than in urban or residential locations. The concentrations ranged between n.d.?246 and n.d.?29 μg m?3 for isocyanatocyclohexane and isothiocyanatocyclohexane, respectively, for industrial areas. On the other hand, urban and residential locations showed concentrations ranging between n.d.?164 and n.d.?29 μg m?3 for isocyanatocyclohexane and isothiocyanatocyclohexane, respectively. The site location (urban or industrial), the kind and nearness of possible iso- and isothiocyanatocyclohexane emission activities (industrial or building construction) and the changes of wind regimes throughout the year have been found the most important factors influencing the concentrations of these compounds in the different places. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
