利用固相微萃取技術被動式採集空氣中之鄰苯二甲酸酯類

Passive Air Sampling Method for Gas-Phase Phthalates by Solid-Phase Microextraction

王韻筑(Yun-Chu Wang)

指導教授 ： 蔡詩偉

國立臺灣大學/公共衛生學院/環境衛生研究所/碩士(2010年)

https://doi.org/10.6342/NTU.2010.10254

摘要

無資料

關鍵字

固相微萃取 ； 氣袋 ； 鄰苯二甲酸酯

並列摘要

Phthalates are widely used in a variety of industries, mainly as plasticizers. Many consumer products contain phthalates, such as building materials, cosmetics and medical devices. It exhibits low acute toxicity but its estrogenic activity has been documented. Previous studies also indicate that the inhalation is an important exposure route, especially from indoor air.
For the assessments of gas-phase phthalates exposures, traditional methods usually require complicated pretreatment processes, which further lead to the possible loss of the analytes and large consumption of toxic solvent. On the other hand, solid phase microextraciton (SPME) presents many advantages over conventional analytical methods by combining sampling, preconcentration, and direct transfer of the analytes into a standard gas chromatography system. Therefore, the purpose of this research was to develop a passive sampler for gaseous phthalates based on the technique of SPME.
Known concentrations of the phthalates vapors were generated in gas bags for the validations of the SPME diffusive sampler. After exposures, the SPME fibers were directly inserted into the injection port of the gas chromatography/mass spectrometer (GC/MS) for thermal desorption and further analysis. The experimental sampling constants of the designed passive sampler for phthalates as well as the effect of different environmental factors on the samplers were validated.
The 100 μm PDMS fiber was used in this study. The experimental sampling constants of phthalates were found to be ranged from 0.0165 to 0.307 cm3 min-1. Different temperatures during sampling lead to the differences of the sampling rates, while the effect of relative humidity can be neglected. The results showed the potential of using passive air sampling by solid-phase microextraction to evaluate the time-weighted average concentrations of phthalates.

並列關鍵字

SPME ； Gas bag ； Phthalates

參考文獻

1. Weschler, C. J., Changes in indoor pollutants since the 1950s. Atmospheric Environment, 2009. 43(1): p. 153-169.

2. Latini, G., Monitoring phthalate exposure in humans. Clinica Chimica Acta, 2005. 361(1-2): p. 20-29.

4. Destaillats, H., Maddalena, R. L., Singer, B. C., et al., Indoor pollutants emitted by office equipment: A review of reported data and information needs. Atmospheric Environment, 2008. 42(7): p. 1371-1388.

5. Rudel, R. A. and Perovich, L. J., Endocrine disrupting chemicals in indoor and outdoor air. Atmospheric Environment, 2009. 43(1): p. 170-181.

6. Wormuth, M., Scheringer, M., Vollenweider, M., et al., What are the sources of exposure to eight frequently used phthalic acid esters in Europeans? Risk Analysis, 2006. 26(3): p. 803-824.