The effects of magnetic fields exposure on relative permittivity of saline solutions measured by a high resolution SPR system.
A measurement system for the relative permittivity of a physiological solution under 50 Hz magnetic fields (MF) is presented. It is based on a phase-sensitive surface plasmon resonance (SPR) system. Relative permittivity was analyzed for different solute concentrations of sodium chloride under various MF exposure parameters. We found that MF exposure at 0.2-4.0 mT step-wise decreased significantly the SPR phase signal of a 0.9% sodium chloride solution while 0.1 mT of MF exposure did not. The decreases in the SPR phase signal depended on the duration of MF exposure, and the signal reached a plateau after 15 min of exposure. Interestingly, the decreased SPR phase signal showed a gradual increase and approached the background level when the exposure was drawn off. In addition, we found that the response of the sodium chloride solution to MF also depended on its concentration. In brief, the relative permittivity of sodium chloride in solutions appears to be practically affected by 50 Hz MF exposure. Our data indicates that the relative permittivity of the saline solution influenced by MF exposure should be considered when investigating the biological effects of MF exposure on organisms in experimental study.
State Key Laboratory of Modern Optical Instrumentation (Zhejiang University), Centre for Optical and Electromagnetics Research, Zhejiang Provincial Key Laboratory for Sensing Technologies, JORCEP (Sino-Swedish Joint Research Center of Photonics), Zhejiang University, Hangzhou 310058, China.
Li
L
Jiang
Bioelectromagnetics Laboratory, Zhejiang University School of Medicine, Hangzhou 310058, China.
Xinyuan
X
Zhao
Bioelectromagnetics Laboratory, Zhejiang University School of Medicine, Hangzhou 310058, China.
Yue
Y
Fei
Bioelectromagnetics Laboratory, Zhejiang University School of Medicine, Hangzhou 310058, China.
Dongdong
D
Yu
State Key Laboratory of Modern Optical Instrumentation (Zhejiang University), Centre for Optical and Electromagnetics Research, Zhejiang Provincial Key Laboratory for Sensing Technologies, JORCEP (Sino-Swedish Joint Research Center of Photonics), Zhejiang University, Hangzhou 310058, China.
Jun
J
Qian
State Key Laboratory of Modern Optical Instrumentation (Zhejiang University), Centre for Optical and Electromagnetics Research, Zhejiang Provincial Key Laboratory for Sensing Technologies, JORCEP (Sino-Swedish Joint Research Center of Photonics), Zhejiang University, Hangzhou 310058, China.
Jinguang
J
Tong
Bioelectromagnetics Laboratory, Zhejiang University School of Medicine, Hangzhou 310058, China.
Guangdi
G
Chen
State Key Laboratory of Modern Optical Instrumentation (Zhejiang University), Centre for Optical and Electromagnetics Research, Zhejiang Provincial Key Laboratory for Sensing Technologies, JORCEP (Sino-Swedish Joint Research Center of Photonics), Zhejiang University, Hangzhou 310058, China.
Sailing
S
He
D060526:Magnetic Fields; D012965:Sodium Chloride / Q000737:chemistry*; D020349:Surface Plasmon Resonance
D012965:Sodium Chloride