TY  - JOUR
AU  - Hong, H.B.
AU  - Krause, H.-J.
AU  - Song, K.
AU  - Choi, C.-J.
TI  - In situ analysis of free radicals from the photodecomposition of hydrogen peroxide using a frequency-mixing magnetic detector
JO  - Applied physics letters
VL  - 101
SN  - 0003-6951
CY  - Melville, NY
PB  - American Institute of Physics
M1  - PreJuSER-22814
SP  - 054105
PY  - 2012
N1  - This research was supported financially by the Converging Research Center Program (2011K000677) and the World Class University (WCU) Program (R31-20029) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology, Republic of Korea.
AB  - We present an analytical method for the real-time detection of free radicals from the photodecomposition (ultraviolet radiation, lambda = 254 nm) of hydrogen peroxide (H2O2) using frequency-mixing magnetic detection. We monitored the free radicals in situ without catalysts or probe molecules. Both water and H2O2 produced frequency-mixing signals under UV radiation, but the water signal was much weaker. The root mean square amplitude of the frequency-mixing signal was found to depend on the initial H2O2 concentration. Considering the physical properties of the reactants, the frequency-mixing signal is attributed to the generation of paramagnetic free radicals by the photodecomposition of H2O2. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.47427401
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000307676600111
DO  - DOI:10.1063/1.4742740
UR  - https://juser.fz-juelich.de/record/22814
ER  -