Investigations on intermediate acetal formation during polarographic estimation of certain benzaldehyde derivatives

Koshy, V. J.; Prasad, J. S.; Kalpana, G.; Satish, S.

doi:10.1016/0003-2670(95)00032-u

Cited by 11 publications

(6 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Benzaldehyde is a reactive, toxic, skin irritant substance produced in the millions of pounds per year and used in odorants, food industries, cosmetics, pharmaceuticals, and fine organics 1–4. Benzaldehyde is generally regarded as safe food additive in the United States and is accepted as a flavoring substance in the European Union 5.…”

Section: Introductionmentioning

confidence: 99%

A Biosensor for Aromatic Aldehydes Comprising the Mediator Dependent PaoABC‐Aldehyde Oxidoreductase

et al. 2012

View full text Add to dashboard Cite

A novel aldehyde oxidoreductase (PaoABC) from Escherichia coli was utilized for the development of an oxygen insensitive biosensor for benzaldehyde. The enzyme was immobilized in polyvinyl alcohol and currents were measured for aldehyde oxidation with different one and two electron mediators with the highest sensitivity for benzaldehyde in the presence of hexacyanoferrate(III). The benzaldehyde biosensor was optimized with respect to mediator concentration, enzyme loading and pH using potassium hexacyanoferrate(III). The linear measuring range is between 0.5–200 µM benzaldehyde. In correspondence with the substrate selectivity of the enzyme in solution the biosensor revealed a preference for aromatic aldehydes and less effective conversion of aliphatic aldehydes. The biosensor is oxygen independent, which is a particularly attractive feature for application. The biosensor can be applied to detect contaminations with benzaldehyde in solvents such as benzyl alcohol, where traces of benzaldehyde in benzyl alcohol down to 0.0042 % can be detected.

show abstract

Section: Introductionmentioning

confidence: 99%

A Biosensor for Aromatic Aldehydes Comprising the Mediator Dependent PaoABC‐Aldehyde Oxidoreductase

et al. 2012

View full text Add to dashboard Cite

show abstract

“…The existence of benzaldehyde above the authorized limits in food will not only critically affect the people's health, but also can badly contaminate the environment [25]. In many countries, it is listed as one of the first control toxic chemicals [26]. Therefore, the improvement in techniques for the determination of benzaldehyde is critical in terms of environmental and safety considerations.…”

Section: Introductionmentioning

confidence: 99%

Conventional surfactant-doped poly (o-anisidine)/GO nanocomposites for benzaldehyde chemical sensor development

Khan

Rahman

et al. 2015

J Sol-Gel Sci Technol

View full text Add to dashboard Cite

We report on the synthesis of conventional surfactant dodecylbenzenesulfonic acid-doped poly (o-anisidine)/graphene oxide composite (DPOMA/GO), a orthomethoxy substituted derivative of anisidine, by in situ oxidative polymerization method. A mixture of Na 2 S 2 O 8 in HCl was used as oxidant, while dodecylbenzenesulfonic acid was used as both dopant and surfactant. The physicochemical characterization was carried out using a field-emission scanning electron microscope and X-ray crystallography (XRD), Fourier transforms infrared, UV-Vis, and simultaneous thermo-gravimetric analysis study. Then, the DPOMA/GO nanocomposites were used to construct nonenzymatic sensors in practical with I-V technique, where the total analytical parameters were measured. The DPOMA/GO nanocomposites were deposited on flat silver electrode (AgE; surface area *0.0216 cm 2 ) to result in a sensor that has a fast response to selective benzaldehyde in buffer system. Features including sensitivity, detection limit, reproducibility, linear dynamic range, selectivity, and electrochemical performances were investigated in detail with the DPOMA/GO nanocomposites-fabricated AgE electrodes. The calibration plot is linear (r 2 0.9699) over the large concentration range (0.1 nM-0.1 mM). The sensitivity and detection limit are calculated as *1.2277 lA cm -2 lM -2 and 0.03 nM (at a signal-to-noise ratio of 3), respectively. Graphical abstract I V I-V method 0 DPOMA/GO Nanocomp/AgE DPOMA/GO Nanocomp/AgE e − BZD + nO -(ads) H 2 O(g) + CO 2 (g) + ne -e − e −

show abstract

“…Since the expected levels of organic impurities in highly purified TPA range from 10 to 140 g g −1 , and the low solubility of TPA in water, thus these impurities are often diluted by a factor of 100 during sample preparation. As a result, an analytical method has to provide the limit of detection (LOD) at or below 0.10-1.4 g mL −1 when it is used for the analyses of organic impurities in industrial samples, otherwise an extraction procedure for impurities preconcentration has to be employed prior to analysis [9,10].…”

Section: Introductionmentioning

confidence: 99%

“…Other impurities as mentioned above also likely cause the tubing of TPA plant to be clogged or the decrease in TPA yield [7]. Even though most impurities present in TPA may be reduced to a given concentration through time-consuming purification process such as hydrogenation, water washing, crystallizing and drying steps commonly used in TPA industry (for example, <20 g g −1 for 4-CBA, <10 g g −1 for BA and IPA, 20-40 g g −1 for TMA, and 80-140 g g −1 for p-TA), the trace impurities even at g g −1 still limit their applications [7][8][9]. Therefore, the detection and measurement of trace-level aromatic acid impurities in commercial or as-synthesized aromatic acid products are relatively important for quality issue reasons [5,7,8].…”

Section: Introductionmentioning

confidence: 99%

Sample stacking for determination of aromatic acid impurities by microemulsion electrokinetic chromatography

Huang

Lin

Hsieh

2009

Analytica Chimica Acta

View full text Add to dashboard Cite

Investigations on intermediate acetal formation during polarographic estimation of certain benzaldehyde derivatives

Cited by 11 publications

References 5 publications

A Biosensor for Aromatic Aldehydes Comprising the Mediator Dependent PaoABC‐Aldehyde Oxidoreductase

A Biosensor for Aromatic Aldehydes Comprising the Mediator Dependent PaoABC‐Aldehyde Oxidoreductase

Conventional surfactant-doped poly (o-anisidine)/GO nanocomposites for benzaldehyde chemical sensor development

Sample stacking for determination of aromatic acid impurities by microemulsion electrokinetic chromatography

Contact Info

Product

Resources

About