Analysis of phthalate esters by ion mobility spectrometry
Conference
·
OSTI ID:460505
- Texas A and M Univ., Galveston, TX (United States). Environmental Analytical Research Lab.
Esters of phthalic acid can be detected by IMS (ion mobility spectrometry). The six phthalates in the EPA`s Priority Pollutant List can be detected in both modes--positive as well as negative mode. In the positive mode, a characteristic reduced mobility was obtained for each phthalate; thus the different esters can be distinguished, including the isomeric di-n-octyl- and di-2-ethylhexyl phthalate. Phthalates can be detected in the low nanogram range; detection sensitivity is comparable or better than those found by gas chromatography using different detectors, including by GC-ECD, GC-FID or GC-MS. Direct Monitoring of environmental phthalates by IMS possess several advantages, e.g., without the usual separation protocols for ubiquitous interferants, faster instrumental analysis time (minutes instead of hours), and lower cost. Thus, IMS of phthalates has a great potential as an environmental monitor.
- OSTI ID:
- 460505
- Report Number(s):
- CONF-961149--
- Country of Publication:
- United States
- Language:
- English
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