Estimation of Aldehydes by the Bisulfite Method

Parkinson, A. Eric; Wagner, E. C.

doi:10.1021/ac50092a021

Cited by 28 publications

(11 citation statements)

References 5 publications

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“…A well-defined isoemissive point was observed at 447 nm, which may suggest that only one new species was formed during the sensing process (Figure 4). Based on previous studies (8,26,27), the changes of the fluorescence spectrum was most likely due to the formation of bisulphite adduct 1 and this transformation was confirmed by thin-layer chromatography (TLC) and IR spectrum in the present study. Upon addition of bisulphite, TLC data of the reaction mixture indicated that a new low R f substance was formed (R f(1) = 0.29, R f(1-bisulphite) % 0, DCM/EtAc (v/v) = 1:1), indicating the reaction of the aldehyde group with bisulphite.…”

Section: Sensing Behaviour Of Probe 1 Toward Bisulphitesupporting

confidence: 85%

“…Herein, we present 4‐(1 H ‐benzimidazol‐2‐yl)benzaldehyde ( 1 ) as a novel ratiometric fluorescent probe for bisulphite. Our design is based on the selective reaction of bisulphite with aldehyde to form an aldehyde–bisulphite adduct (Scheme ) . This reaction is frequently employed to purify aldehydes in organic synthesis, but can also be used to detect bisulphite in the field of analytical chemistry, because the transformation of the aldehyde into bisulphite adduct can lead to a change in the electron acceptor strength .…”

Section: Introductionmentioning

confidence: 99%

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A ratiometric fluorescent probe for bisulphite anion, employing intramolecular charge transfer

Wang

Yang

2012

Luminescence

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4-(1H-benzimidazol-2-yl)benzaldehyde (1) has been developed as a new ratiometric fluorescent probe for bisulphite, based on the modulation of intramolecular charge transfer (ICT). Upon mixing with bisulphite in aqueous ethanol, an aldehyde-bisulphite adduct was formed and the ICT of the probe was switched off, which resulted in a ratiometric fluorescence response with an enhancement of the ratios of emission intensities at 368 and 498 nm. The detection range of the probe for bisulphite is in the 2.0-200 µmol/L concentration range and the detection limit is 0.4 µmol/L. Probe 1 produces a ratiometric fluorescent response to bisulphite with a marked emission wavelength shift (130 nm) and displays high selectivity for bisulphite over other anions.

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Section: Sensing Behaviour Of Probe 1 Toward Bisulphitesupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

A ratiometric fluorescent probe for bisulphite anion, employing intramolecular charge transfer

Wang

Yang

2012

Luminescence

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“…The changes measured at pH 5 in this study correlate with data presented later in this paper on the decomposition of HMSA. HMSA has been found to be resistant to oxidation by excess iodine over a period of 3 hours [Parkinson and Wagner, 1934]. Hoignk et al [1985] show no direct reaction between ozone and HMSA.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of the formation and decomposition of hydroxymethanesulfonate

Kok¹,

Gitlin²,

Lazrus³

1986

J. Geophys. Res.

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The kinetics of the formation and decomposition of hydroxymethanesulfonate (HMSA) have been examined at pH 4 and 5. The second‐order rate constant for the formation of HMSA at 25°C was measured to be 1.94 ± 0.11 and 12.60 ± 1.04 mol−1 s−1 at pH values of 4 and 5, respectively. The rate constant of HMSA decomposition to form formaldehyde (HCHO) and aqueous sulfur dioxide S(IV) at pH 4 and 5 was 4.8 ± 0.4 × 10−7 and 3.5 ± 0.2 × 10−6 s−1, respectively. In addition, no reaction between hydrogen peroxide (H2O2) and HMSA was observed when a tenfold molar excess of H2O2 was present at pH values of 4 and 5.

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“…In the absence of other aldehydes and ketones, nbutyraldehyde can be determined by addition of sodium bisulfite and the excess bisulfite determined with iodine or thiosulfate (36).…”

Section: Methodsmentioning

confidence: 99%

Butyraldehydes

Billig¹

2003

Kirk-Othmer Encyclopedia of Chemical Technology

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The two isomeric butanals, n ‐ and isobutyraldehyde, C 4 H 8 O, are produced commercially almost exclusively by the Oxo reaction of propylene. They also occur naturally in trace amounts in tea leaves, certain oils, coffee aroma, and tobacco smoke. The butanals are highly flammable, colorless liquids of pungent odor. These aldehydes are miscible with most organic solvents, eg, acetone, ether, ethanol, and toluene, but are only slightly soluble in water. The reactions of n ‐ and isobutyraldehyde are characteristic aldehyde reactions of oxidation, reduction, and condensation. The majority of the butyraldehyde produced in the United States is converted into 1‐butanol and 2‐ethylhexanol (2‐EH). The remaining n ‐butyraldehyde production of the United States goes into (in decreasing order): poly(vinyl butyral), 2‐ethylhexanal, trimethylolpropane, methyl amyl ketone, and butyric acid. A large portion of the total U.S. consumption of isobutyraldehyde goes into the production of isobutyl alcohol and isobutyraldehyde condensation and esterification products. The other principal isobutyraldehyde derivative markets are neopentyl glycol, isobutyl acetate, isobutyric acid, isobutylidene diurea, and methyl isoamyl ketone. The merchant market for the two aldehydes is relatively insignificant, most of the production being employed captively. The most active n ‐butyraldehyde derivatives were expected to be PVB, as more regions require automotive safety glass, and trimethylolpropane. Although tests have shown that n ‐butyraldehyde causes some adverse physiological effects, there is no danger to health in normal plant practice. Both aldehydes have a pungent, penetrating odor. Their vapors as well as the neat liquids can cause skin, eye, and respiratory organ irritation. Stainless steel, baked phenolic‐lined steel, or aluminum are often used for storage and handling of n ‐ and isobutyraldehyde. Storage of the aldehydes under nitrogen preserves the integrity of the material.

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Estimation of Aldehydes by the Bisulfite Method

Abstract: THE bisulfite method of Ripper (27) was initially tested only with formaldehyde, acetaldehyde, benzaldehyde, and vanillin. A study by Feinberg (7) included also

Cited by 28 publications

References 5 publications

A ratiometric fluorescent probe for bisulphite anion, employing intramolecular charge transfer

A ratiometric fluorescent probe for bisulphite anion, employing intramolecular charge transfer

Kinetics of the formation and decomposition of hydroxymethanesulfonate

Butyraldehydes

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