Sensing Estrogen with Electrochemical Impedance Spectroscopy.
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 (R2= 0.999) for 17β-estradiol vapor concentration from 3.7 ng/L to 3.7 × 10-4ng/L with a limit of detection (3.7 × 10-4ng/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.
Department of Chemistry, Yonsei University, Seoul 120-749, Republic of Korea.
Jing
J
Li
Department of Chemistry, Yonsei University, Seoul 120-749, Republic of Korea.
Byung Kun
BK
Kim
Department of Chemistry, Yonsei University, Seoul 120-749, Republic of Korea.
Kang-Kyun
0000-0001-5116-8151
KK
Wang
Department of Chemistry, Yonsei University, Seoul 120-749, Republic of Korea.
Ji-Eun
JE
Im
Department of Chemistry, Yonsei University, Seoul 120-749, Republic of Korea.
Han Nim
HN
Choi
Department of Chemistry, Yonsei University, Seoul 120-749, Republic of Korea.
Dong-Hwan
DH
Kim
Department of Biosystems and Biomaterials Science and Engineering, Seoul National University, Seoul 151-921, Republic of Korea.
Seong In
SI
Cho
Department of Chemistry, Yonsei University, Seoul 120-749, Republic of Korea.
Won-Yong
0000-0002-1394-3193
WY
Lee
Department of Chemistry, Yonsei University, Seoul 120-749, Republic of Korea.
Yong-Rok
0000-0001-8166-9889
YR
Kim