This study demonstrates the application feasibility of electrochemical impedance spectroscopy (EIS) in measuring estrogen (17β-estradiol) in gas phase. The present biosensor gives a linear response (R 2 = 0.999) for 17β-estradiol vapor concentration from 3.7 ng/L to 3.7 × 10-4 ng/L with a limit of detection (3.7 × 10-4 ng/L). The results show that the fabricated biosensor demonstrates better detection limit of 17β-estradiol in gas phase than the previous report with GC-MS method. This estrogen biosensor has many potential applications for on-site detection of a variety of endocrine disrupting compounds (EDCs) in the gas phase.
Bibliographical noteFunding Information:
This work was carried out with the support of Cooperative Research Program for Agriculture Science and Technology Development (Project no. PJ01083001), Rural Development Administration, and the grant of the National Research Foundation of Korea (NRF) funded by the Korea government (MEST) (no. 2011-0001129), Republic of Korea
© 2016 Jing Li et al.
All Science Journal Classification (ASJC) codes
- Analytical Chemistry
- Chemical Engineering(all)
- Computer Science Applications