Time weighted average concentration monitoring of compounds with wide range of physicochemical properties in aquatic environment using thin film solid phase microextraction

2017-03-05
Boyacı, Ezel
Ahmadi, Fardin
Pawliszyn, Janusz
This study offers an integrated approach for time weighted average (TWA) concentration determination of analytes with a wide range of physical-chemical properties. Two types of thin film solid phase microextraction (TF-SPME) passive sampler, namely a retracted TF-SPME device using a hydrophilic lipophilic balance (HLB) sorbent and an open bed configuration TF-SPME device with octadecyl silica-based (C18) sorbent were developed and used for monitoring TWA concentrations of selected UV blockers and biocides. Laboratory calibration results indicated that the thin film retracted device using HLB sorbent is suitable to determine TWA concentrations of hydrophilic analytes in water and uptake was linear up to 70 days. In open bed form, a one-calibrant kinetic calibration technique was accomplished by loading Benzophenone 3-d5 as calibrant on the C18 coating to quantify all hydrophobic compounds. The experimental results showed that the one-calibrant kinetic calibration technique can be used for determination of classes of compounds in cases where deuterated counterparts are either not available or expensive. The developed passive samplers were used in field trials which indicated that these devices are suitable for long-term and short-term monitoring of compounds varying in polarity.

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Citation Formats
E. Boyacı, F. Ahmadi, and J. Pawliszyn, “Time weighted average concentration monitoring of compounds with wide range of physicochemical properties in aquatic environment using thin film solid phase microextraction,” Chicago, Illinois, USA, 2017, p. 305, Accessed: 00, 2021. [Online]. Available: https://pittcon.org/2017/Pittcon-2017-Technical-Program.pdf.