[Studies on sequential injection spectrophotometric system using a reflective flow cell for process analysis]

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[Studies on sequential injection spectrophotometric system using a reflective flow cell for process analysis] Abstract Text:

Shi-hua Fan,Shi-li Wang,Xiao-feng Fan,Fu-ren Wang,Zhao-lun Fang,

A reflective flow cell was developed and coupled to a sequential injection system and optical fiber photometric detection system based on emitting diode light source. A multistrand bifurcated optical fiber was coupled with incident light, detector and flow cell. Optical fibers were used to carry light from the electronics unit to a reflective flow-through cell and back. The liquid flow path through the cell is linear with a large exit aperture such that bubbles are not trapped in the optical path. The optical arrangement is such that the incident light crosses the liquid flow orthogonally and is reflected back to the receiver fiber. This arrangement reduces the reflective index sensitivity by an order of magnitude relative to a conventional flow cell. The cell showed good immunity to refractive index and air bubble effects. The chromogenic reaction of chloride ion with mercury thiocyanate-iron(III) was used as a model reaction to optimize the experiment system and check the optical system. The reflectance of the reaction was monitored with blue emitting diode. The linear range was 0-100 mg x L(-1) Cl-. A detection limit (3sigma) of 1.2 mg x L(-1), precision of 1.5% (n = 11), and a throughput of 30 samples per hour were achieved.

[Studies on sequential injection spectrophotometric system using a reflective flow cell for process analysis] Publishing Authors By Initials

SH Fan,SL Wang,XF Fan,FR Wang,ZL Fang,

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[Studies on sequential injection spectrophotometric system using a reflective flow cell for process analysis] Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Guang pu xue yu guang pu fen xi = Guang pu

VOLUME: 24

Page Numbers: 368-71

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ISSN: 1000-0593

DAY: 11

MONTH: Mar

YEAR: 2004

[Studies on sequential injection spectrophotometric system using a reflective flow cell for process analysis] Information

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LANGUAGE: chi

NlmUniqueID: 9424805

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Grant and Affiliation Information for [Studies on sequential injection spectrophotometric system using a reflective flow cell for process analysis]

AFFILIATION: Research Center for Analytical Sciences, Northern University, Shengyang, China.

Country: China

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MEDLINETA: Guang Pu Xue Yu Guang Pu Fen X

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