Citation: Feng Shen, Meng Yang, Yong Yu, Qi Kang. Simultaneous laser-induced fluorescence and contactless-conductivity detection for microfluidic chip[J]. Chinese Chemical Letters, ;2008, 19(11): 1333-1336. doi: 10.1016/j.cclet.2008.06.057 shu

Simultaneous laser-induced fluorescence and contactless-conductivity detection for microfluidic chip

Feng Shen ^a, ,
Meng Yang ^a,b ,
Yong Yu ^a ,
Qi Kang ^a

a National Microgravity Laboratory, Institute of Mechanics, Chinese Academy of Science, Beijing 100190, China;
b College of Chemistry, Beijing Normal University, Beijing 100875, China

Received Date: 6 May 2008

A combined detection system involving simultaneous LIF and contactless-conductometric measurements at the same place of the microfluidic chip was described.The LIF measurement was designed according to the confocal principle and a moveable contactless-conductivity detector was used in C⁴D.Both measurements were mutually independent and advantageous in analyses of mixtures.Various experimental parameters affecting the response were examined and optimized.The performances were demonstrated by simultaneous detection of Rhodamine B.And the results showed that the combined detection system could be used sensitively and reliably.
- Microfluidic chip,
- Lair-induced fluorescence(LIF),
- Capacitively coupled contactless-conductivity detection(C⁴D)
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