A highly selective optical sensor for catalytic determination of ultra-trace amounts of nitrite in water and foods based on brilliant cresyl blue as a sensing reagent

Ensafi, Ali A.; Amini, Maryam

doi:10.1016/j.snb.2010.03.014

Cited by 73 publications

(23 citation statements)

References 33 publications

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“…The optode described in this work shows a high selectivity for nitrite over other common ions except for S 2 O 3 2-and SO 3 2-. The main advantage of purposed sensor in comparison with previously reported optodes [26][27][28] ( Table 4) is its simple and fast preparation of sensing membrane using low-cost materials. In addition it is fully reversible and has a long lifetime.…”

Section: Resultsmentioning

confidence: 99%

Development of an optical redox chemical sensor for nitrite determination

Rastegarzadeh¹,

Kalantaripour²

2012

Quím. Nova

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Recebido em 18/7/11; aceito em 14/10/11; publicado na web em 20/1/12An optical chemical sensor for the determination of nitrite based on incorporating methyltrioctylammonium chloride as an anionic exchanger on the triacetylcellulose polymer has been reported. The response of the sensor is based on the redox reaction between nitrite in aqueous solution and iodide adsorbed on sensing membrane using anion exchange phenomena. The sensing membrane reversibly responses to nitrite ion over the range of 6.52×10 -6 -8.70×10 -5 mol L -1 with a detection limit of 6.05×10 -7 mol L -1 (0.03 mg mL -1) and response time of 6 min. The relative standard deviation for eight replicate measurements of 8.70×10-6 and 4.34×10-5mol L -1 of nitrite was 4.4 and 2.5 %, respectively. The sensor was successfully applied for determination of nitrite in food, saliva and water samples.

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Section: Resultsmentioning

confidence: 99%

Development of an optical redox chemical sensor for nitrite determination

Rastegarzadeh¹,

Kalantaripour²

2012

Quím. Nova

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“…Among these techniques, optical sensors appeared to be more suited as they offer good selectivity, sensitivity, low detection limit and less complication [28][29][30]. Recently, sensors based on optical signal measurements and fabricated with Schiff bases as ionophores have been applied to determine specific ions.…”

Section: Eurasian Chemical Communicationsmentioning

confidence: 99%

Introduction of a new nitrite-selective optical sensor for food analysis using a copper(II) Schiff base complex

Habibzadeh

Tavallail

Esmaielzadeh

et al. 2020

Eurasian Chem. Commun.

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A copper(II) Schiff base complex, [Cu(cd4OMeSalMeen)], methyl-2-{[1-methyl-2-(4methoxy-phenolate)mehylidynenitrilo]ethyl}amino-1-cyclopentene dithiocarboxylate copper(II), was incorporated into triacetylcellulose membrane and applied as ionophore in order to develop an anion-selective optical sensor for the analysis of nitrite by absorption spectrophotometry. At optimum pH 3.0, a linear calibration curve was observed for nitrite in the range of 0.50 to 7.00 mgL -1 with a detection limit of 0.04 mgL -1 . The response time of the optode (t95%) was found to be 8-10 min, depending on the nitrite ion concentration. The proposed sensor was fully recovered in nitric acid solution (0.1 M) and had acceptable reproducibility (RSD=1.9%). The optode exhibited good selectivity toward nitrite ion according to hard-soft acid base (HSAB) principle and the formation constant was calculated. The application of the sensor for determination of nitrite content in meat products was quiet successful.

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“…Compounds containing SO 3 2-ions are used as preservatives in view of their antioxidant properties and as inhibitors of enzymatic and microbial activities in beverages, food, and pharmaceutical products [10]. The NO 2 -ion is a typical inorganic pollutant and its sources include wastes from fertilizer and preservative industries and adulterants in food [11][12][13][14]. Therefore, it is important and desirable to design and develop a catalyst for the concurrent detection and determination of N 2 H 4 , SO 3 2-, and NO 2 -present in food, water, biological fluids, etc.…”

Section: -mentioning

confidence: 99%

Concurrent Electrocatalysis and Sensing of Hydrazine and Sulfite and Nitrite Ions using Electrodeposited Gold Nanostructure-Modified Electrode

Seo¹,

Manivannan²,

Kang³

et al. 2017

Journal of Electrochemical Science and Technology

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Concurrent electrocatalysis and sensing of hydrazine, sulfite ions, and nitrite ions in a mixture were studied using electrodes modified by electrodeposited Au nanostructures (NSs). The β-cyclodextrin-mixed silicate sol-gel composite was dropcasted on the electrode surface and nucleation guided by β-cyclodextrin occurred, followed by the electrodeposition of Au NSs. The additive, β-cyclodextrin, played an evident role as a structure-directing agent; thus, small raspberry-like Au NSs were obtained. The modified electrodes were characterized by surface characterization techniques and electrochemical methods. The Au NSs-modified electrodes effciently electrocatalyzed the oxidation of toxic molecules such as hydrazine and sulfite and nitrite ions even in the absence of any other electron transfer mediator or enzyme immobilization. Wellresolved oxidation peaks along with decreased overpotentials were noticed during the electrooxidation process. The fabricated Au nanostructured electrode clearly distinguished the electrooxidation peaks of each of the three analytes from their mixture.

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A highly selective optical sensor for catalytic determination of ultra-trace amounts of nitrite in water and foods based on brilliant cresyl blue as a sensing reagent

Cited by 73 publications

References 33 publications

Development of an optical redox chemical sensor for nitrite determination

Development of an optical redox chemical sensor for nitrite determination

Introduction of a new nitrite-selective optical sensor for food analysis using a copper(II) Schiff base complex

Concurrent Electrocatalysis and Sensing of Hydrazine and Sulfite and Nitrite Ions using Electrodeposited Gold Nanostructure-Modified Electrode

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