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      Determination of 15 phthalate esters in air by gas-phase and particle-phase simultaneous sampling.

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          Abstract

          Based on previous research, the sampling and analysis methods for phthalate esters (PAEs) were improved by increasing the sampling flow of indoor air from 1 to 4L/min, shortening the sampling duration from 8 to 2hr. Meanwhile, through the optimization of chromatographic conditions, the concentrations of 9 additional PAE pollutants in indoor air were measured. The optimized chromatographic conditions required a similar amount of time for analysis as before, but gave high responsivity, the capability of simultaneously distinguishing 15 kinds of PAEs, and a high level of discrimination between individual sample peaks, as well as stable peak generation. The recovery rate of all gas-phase and particle-phase samples of the 15 kinds of PAEs ranged from 91.26% to 109.42%, meeting the quantitative analysis requirements for indoor and outdoor air sampling and analysis. For the first time, investigation of the concentration levels as well as characteristics of 15 kinds of PAEs in the indoor air from four different traffic micro-environments (private vehicles, busses, taxis and subways) was carried out, along with validation of the optimized sampling and analytical method. The results show that all the 9 additional PAEs could be detected at relatively high pollution levels in the indoor air from the four traffic micro-environments. As none of the pollution levels of the 15 kinds of PAEs in the indoor air from the 4 traffic micro-environments should be neglected, it is of great significance to increase the types of PAEs able to be detected in indoor air.

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          Author and article information

          Journal
          J Environ Sci (China)
          Journal of environmental sciences (China)
          Elsevier BV
          1001-0742
          1001-0742
          May 2017
          : 55
          Affiliations
          [1 ] College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China.
          [2 ] College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang National Radiation Environmental Technology Co., Ltd., Hangzhou 310011, China.
          [3 ] College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China; School of Environmental and Resource Sciences, Zhejiang Agriculture and Forestry University, Hangzhou 310058, China.
          [4 ] College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China. Electronic address: shenxueyou@zju.edu.cn.
          Article
          S1001-0742(16)30276-5
          10.1016/j.jes.2016.01.036
          28477807
          4beaf4e1-3fba-4b3e-8a27-0a715ae3bc3c

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