| Title: | SPME-Based C(a)-History Method for Measuring SVOC Diffusion Coefficients in Clothing Material |
| Address: | "Department of Building Science, Tsinghua University , Beijing 100084, China. Beijing Key Laboratory of Indoor Air Quality Evaluation and Control , Beijing 100084, China" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "Clothes play an important role in dermal exposure to indoor semivolatile organic compounds (SVOCs). The diffusion coefficient of SVOCs in clothing material (D(m)) is essential for estimating SVOC sorption by clothing material and subsequent dermal exposure to SVOCs. However, few studies have reported the measured D(m) for clothing materials. In this paper, we present the solid-phase microextraction (SPME) based C(a)-history method. To the best of our knowledge, this is the first try to measure D(m) with known relative standard deviation (RSD). A thin sealed chamber is formed by a circular ring and two pieces of flat SVOC source materials that are tightly covered by the targeted clothing materials. D(m) is obtained by applying an SVOC mass transfer model in the chamber to the history of gas-phase SVOC concentrations (C(a)) in the chamber measured by SPME. D(m)'s of three SVOCs, di-iso-butyl phthalate (DiBP), di-n-butyl phthalate (DnBP), and tris(1-chloro-2-propyl) phosphate (TCPP), in a cotton T-shirt can be obtained within 16 days, with RSD less than 3%. This study should prove useful for measuring SVOC D(m) in various sink materials. Further studies are expected to facilitate application of this method and investigate the effects of temperature, relative humidity, and clothing material on D(m)" |
| Keywords: | "*Air Pollution, Indoor *Clothing Dibutyl Phthalate/analogs & derivatives Diffusion *Solid Phase Microextraction Volatilization;" |
| Notes: | "MedlineCao, Jianping Liu, Ningrui Zhang, Yinping eng 2017/07/18 Environ Sci Technol. 2017 Aug 15; 51(16):9137-9145. doi: 10.1021/acs.est.7b02540. Epub 2017 Jul 28" |
