Sequential injection system for simultaneous determination of sucrose and phosphate in cola drinks using paired emitter-detector diode sensor

Saetear, Phoonthawee; Khamtau, Kittiwut; Ratanawimarnwong, Nuanlaor; Sereenonchai, Kamonthip; Nacapricha, Duangjai

doi:10.1016/j.talanta.2013.05.051

Cited by 29 publications

(14 citation statements)

References 34 publications

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“…Sucrose (equivalent to • Bx) and orthophosphate was carried out using a benchtop spectrophotometer. Sucrose was detected based on the schlieren effect at the interface between sample and pure water plugs [19][20][21][22][23][24], as our reported for analysis of sucrose in beverages [19][20][21]. Orthophosphate analysis was achieved by the molybdenum blue method, instead of turbidimetry [19], to avoid the adsorption of the in-line precipitates on the inner wall of PTFE tubing.…”

Section: Introductionmentioning

confidence: 99%

Sequential Injection System for Analysis of Degree Brix, Orthophosphate and pH in Raw Sugarcane Juice Applicable to Sugar Industry

2021

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This work presents, for the first time, a new sequential injection analysis (SIA) method to simultaneously analyze degree Brix, orthophosphate and pH in raw cane juice. These key parameters relate to price of harvested sugarcane and quality of cane juice for sugar production. The SIA system employed two detectors: the first detector is a diode-array spectrophotometer, equipped with a regular flow cell, for measurements of degree Brix and orthophosphate. Quantitative of degree Brix (°Bx; ca. % (w/w) sucrose) was based on manipulation of the schlieren effect at the interface between plugs of sample and water. Orthophosphate analysis was carried out based on the molybdenum blue method with significant reduction in consumption of the reagents. Compensation of the schlieren effect from sucrose for determination of orthophosphate was achieved by using a dual-wavelength spectrometric detection. Second detector is a pH-sensing device, called ion-selective field-effect transistors (ISFET). The ISFET is based on the current through the ISFET arising according to the H+ concentration in solution. Our developed SIA system provides linear calibration graphs fitting for purpose in analysis of sugarcane juice (pH: 0–14, °Bx: 1.0–7.0 and P2O5: 20–200 mg L−1). Simultaneous analysis of sugarcane juice for pH, °Bx and P2O5 is carried out within 5 min (12 sample per h). Precision of SIA system is acceptable (RSD < 3%). Our SIA system gave quantitative results insignificantly different, as compared with conventional methods for analysis of pH, °Bx and P2O5 in sugarcane juice.

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Section: Introductionmentioning

confidence: 99%

Sequential Injection System for Analysis of Degree Brix, Orthophosphate and pH in Raw Sugarcane Juice Applicable to Sugar Industry

2021

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“…25,26 The PEDD has been employed in the analysis of physiological samples, [27][28][29][30][31][32][33][34][35][36][37][38][39][40] drink and food samples [41][42][43][44] and environmental samples. 45 There are also reports of dual analysis employing PEDDs, for example, multicommutated flow (MCFA) system for the determination of activity of acid phosphate and alkaline phosphatase, 46 sequential injection (SI) system for quantitative measurement of sucrose and phosphate, 47 MCFA system for determination of phosphate and calcium, 48 MCFA system for total protein and creatinine analysis 49 and MCFA system for investigation of iron-transferrin and apotransferrin speciation in human serum. 50 Recently, Kalinowski and Koronkiewicz described the use of a double-PEDD to measure absorbance in the double-beam photometric mode, where one of the PEDDs was employed for reaction detection and the other employed for reference detection.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Colorimetric Measurements of Antioxidant Capacity by Flow Injection Analysis with Paired Emitter Detector Diode

et al. 2019

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An effective flow injection analysis (FIA) system employing paired emitter detector diode (PEDD) for simultaneous dual antioxidant assays is proposed. The total antioxidant capacity (TAC) was measured using the 2,2′-azino-bis(3ethylbenzothiazoline-6-sulfonic acid) (ABTS) assay in parallel with the ferric reducing antioxidant power (FRAP) assay. Ascorbic acid was used as the reference antioxidant and the TAC value reported as ascorbic acid equivalent (AAE). A 10port valve furnished with two injection loops allowed the sample from one loop to react with the ABTS reagent and be detected by one PEDD. At the same time, the sample from the second loop reacted with the FRAP reagent and is detected at the second PEDD. A pair of red light emitting diodes (634 nm) was employed for both PEDDs. The linearity range was 10 to 50 μM ascorbic acid, with limit of detection of 3.18 and 4.37 μM, and precision of 2.41 and 2.15% RSD (for 30 μM ascorbic acid, n = 10) for the ABTS and FRAP assay, respectively. Sample throughput of 90 samples/h was achieved. The method was applied to the measurement of TAC of commercial fruit juice, instant tea products and vitamin C tablets. The observed AAE values were in good agreement with those obtained using batch methods with a spectrophotometer.

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“…Pairing two properly selected LEDs, one for emission and one for detection (paired emitter detector diode (PEDD)), enhances selectivity and enables us to prepare a detector dedicated for some specific determinations, where optical filters can be eliminated. Such systems can be employed for analytical purposes, for example, for phosphate determination (Bui and Hauser 2013 ; Fiedoruk et al 2014 ; O’Toole et al 2007 ; Saetear et al 2013 ; Shin et al 2016 ).…”

Section: Introductionmentioning

confidence: 99%

A novel automatic flow method with direct-injection photometric detector for determination of dissolved reactive phosphorus in wastewater and freshwater samples

Koronkiewicz

Trifescu

Smoczyński

et al. 2018

Environ Monit Assess

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The novel automatic flow system, direct-injection detector (DID) integrated with multi-pumping flow system (MPFS), dedicated for the photometric determination of orthophosphates in wastewater and freshwater samples is for the first time described. All reagents and the sample were injected simultaneously, in counter-current into the reaction-detection chamber by the system of specially selected for this purpose solenoid micro-pumps. The micro-pumps provided good precision and accuracy of the injected volumes. For the determination of orthophosphates, the molybdenum blue method was employed. The developed method can be used to detect orthophosphate in the range 0.1–12 mg L−1, with the repeatability (RSD) about 2.2% at 4 mg L−1 and a very high injection throughput of 120 injections h−1. It was possible to achieve a very small consumption of reagents (10 μL of ammonium molybdate and 10 μL of ascorbic acid) and sample (20 μL). The volume of generated waste was only 440 μL per analysis. The method has been successfully applied, giving a good accuracy, to determination of orthophosphates in complex matrix samples: treated wastewater, lake water and reference sample of groundwater. The developed system is compact, small in both size and weight, requires 12 V in supply voltage, which are desirable for truly portable equipment used in routine analysis. The simplicity of the system should result in its greater long-time reliability comparing to other flow methods previously described.

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Sequential injection system for simultaneous determination of sucrose and phosphate in cola drinks using paired emitter-detector diode sensor

Cited by 29 publications

References 34 publications

Sequential Injection System for Analysis of Degree Brix, Orthophosphate and pH in Raw Sugarcane Juice Applicable to Sugar Industry

Sequential Injection System for Analysis of Degree Brix, Orthophosphate and pH in Raw Sugarcane Juice Applicable to Sugar Industry

Simultaneous Colorimetric Measurements of Antioxidant Capacity by Flow Injection Analysis with Paired Emitter Detector Diode

A novel automatic flow method with direct-injection photometric detector for determination of dissolved reactive phosphorus in wastewater and freshwater samples

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