Flow injection determinations of citric acid: a review

Moreno-Cid, A.; Yebra, M. C.; Solla, Xosé Manuel Santos

doi:10.1016/j.talanta.2003.12.009

Cited by 24 publications

(10 citation statements)

References 24 publications

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“…It is distinguished by its simple foundation, being an inexpensive device, with simple and convenient treatment and with great ability to give reproducible results in a short analysis time. [ 95 ]…”

Section: Cl‐based Analytical Techniquesmentioning

confidence: 99%

A review of recent developments based on chemiluminescence detection systems for pesticides analysis

Yahyai

Lawati

2020

Luminescence

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Chemiluminescence is one of the most coveted methods for sensitive determination of pesticides in food and environmental samples. To date, many methods have been developed for qualitative and quantitative analysis of pesticides, ranging from traditional to advanced methods. This study outlines the progress in the conventional and advanced analytical methods, coupled to a chemiluminescence detection system, that are employed for the determination of pesticides in food and environmental samples. Different analytical methods including chromatographic methods, flow‐based systems, and paper‐based systems are reviewed in this paper. As well, new advances in the application of nanomaterials, aptamer, and molecularly imprinted polymers are highlighted. We also address the challenges and difficulties associated with these methods. Finally, we highlight the future direction in this active field of research.

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Section: Cl‐based Analytical Techniquesmentioning

confidence: 99%

A review of recent developments based on chemiluminescence detection systems for pesticides analysis

Yahyai

Lawati

2020

Luminescence

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“…Although, several methods based on electrochemistry were described for the determination of citrate, only few of which are based on potentiometric techniques. Modified carbon [12] and copper wire electrodes were reported for determining citrate as part of a flow injection system [13]. At the same time, only a limited number of citrate selective electrodes were reported in literature.…”

Section: Introductionmentioning

confidence: 99%

Graphene oxide with covalently attached zinc monoamino-phthalocyanine coated graphite electrode as a potentiometric platform for citrate sensing in pharmaceutical preparations

Nooredeen

El‐Ghaffar

Darwish

et al. 2015

J Solid State Electrochem

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A citrate selective coated graphite electrode (CGE) based on zinc monoamino-phthalocyanine functionalized graphene (ZnMAPc-G) has been developed and potentiometrically evaluated. The composition of the membrane prepared from ZnMAPc-G, DOS, and PVC in THF was optimized. The sensor based on ZnMAPc-G containing 5 % ZnMAPc possessed the optimum performance in glycine buffer 0.01 M of pH 3.9 with a near Nernstian slope of −57.3±0.5 mV/decade, a linear range of 8×10 −7 -1×10 −2 mol L −1 and a detection limit of 5×10 −7 mol L −1 . Different electrodes prepared using ZnMAPc as free ionophore or as composite with graphene (ZnMAPc/G) were also evaluated and compared to the electrode containing covalently attached ionophore (ZnMAPc-G). The proposed sensor possessed a long-life of about 6 months without notable drift in its slope and was utilized in the determination of the citrate concentration in some pharmaceutical formulation.

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“…Citrate is widely used as a multi-functional additive in food and pharmaceutical industries 12 , and an intermediate in the tricarboxylic acid cycle (TCA cycle: a series of enzyme-induced oxidation and transformation of acetate to CO 2 in all living cells) 13 . Since citric acid naturally occurs at concentrations between approximately 2 and 200 mg/L in soil environments 14 , it is necessary to investigate if citric acid would have an effect on ferrous carbonate nucleation and precipitation.…”

Section: Introductionmentioning

confidence: 99%

Ferrous Carbonate Nucleation and Inhibition

et al. 2008

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In this research, the nucleation kinetics and inhibition of ferrous carbonate (siderite) were investigated in a batch reactor under rigorously anoxic conditions in the absence of reducing agents. The nucleation kinetics of ferrous carbonate in 0.01 m NaCl solutions was measured from 25°C to 65°C at constant supersaturation. A decrease in temperature slows down ferrous carbonate nucleation rate. Similarly an increased ionic strength and a decreased saturation index result in a slower ferrous carbonate nucleation. Then, citrate and two common calcite (CaCO 3 ) scale inhibitors such as phosphinopolycarboxylic acid (PPCA) and bis-hexamethylene triamine-penta(methylene phosphonic) acid (BHPMP) were examined in inhibition experiments. Our results reveal that common calcite scale inhibitors are not effective at preventing ferrous carbonate precipitation, whereas citrate is. The effectiveness of citrate as a ferrous carbonate nucleation inhibitor depends strongly temperature. This work suggests that citrate may have important implications in municipal, industrial, and natural waters in controlling ferrous concentrations.

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Flow injection determinations of citric acid: a review

Cited by 24 publications

References 24 publications

A review of recent developments based on chemiluminescence detection systems for pesticides analysis

A review of recent developments based on chemiluminescence detection systems for pesticides analysis

Graphene oxide with covalently attached zinc monoamino-phthalocyanine coated graphite electrode as a potentiometric platform for citrate sensing in pharmaceutical preparations

Ferrous Carbonate Nucleation and Inhibition

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