Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/14183
ชื่อเรื่อง: Sequential injection system for simultaneous determination of sucrose and phosphate in cola drinks using paired emitter-detector diode sensor
ผู้แต่ง: Saetear P.
Khamtau K.
Ratanawimarnwong N.
Sereenonchai K.
Nacapricha D.
Keywords: Beverages
Calcium phosphate
Diodes
Phase interfaces
Phosphates
Cola drinks
On-line quality control
Paired emitter detector diodes
Schlieren effects
Sequential injection systems
Simultaneous detection
Simultaneous determinations
Turbidimetry
Sugar (sucrose)
วันที่เผยแพร่: 2013
บทคัดย่อ: This work presents the simultaneous determination of sucrose and phosphate by using sequential injection (SI) system with a low cost paired emitter-detector diode (PEDD) light sensor. The PEDD uses two 890 nm LEDs. Measurement of sucrose in Brix unit was carried out based on the detection of light refraction occurring at the liquid interface (the schlieren effect) between the sucrose solution and water. Phosphate was measured from the formation of calcium phosphate with turbidimetric detection. With careful design of the loading sequence and volume (sample - precipitating reagent - sample), simultaneous detection of sucrose and phosphate was accomplished with the single PEDD detector. At the optimized condition, linear calibrations from 1 to 7 Brix sucrose and from 50 to 200 mg PO43- L-1 were obtained. Good precision at lower than 2% RSD (n=10) for both analytes with satisfactory throughput of 21 injections h-1 was achieved. The method was successfully applied for the determination of sucrose and phosphate in cola drinks. The proposed method is readily applicable for automation and is found to be an alternative method to conventional procedures for on-line quality control process in cola drink industry. © 2013 Published by Elsevier B.V.All rights reserved.
URI: https://ir.swu.ac.th/jspui/handle/123456789/14183
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879108107&doi=10.1016%2fj.talanta.2013.05.051&partnerID=40&md5=2caf8c280866bd16b94f91ba97d0d190
ISSN: 399140
Appears in Collections:Scopus 1983-2021

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