On-line-Analytik für Peressigsäure / On-line-Analytics for Peracetic Acid

Krüßmann, Helmut; Bohnen, J.

doi:10.1515/tsd-1994-310404

Cited by 15 publications

(7 citation statements)

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“…Because of the similarities of the behavior of both species, the simultaneous analysis of both species is a challenging problem. The concept for the simultaneous analysis of the two species is based on the difference in their oxidizing power. − For instance, the uncatalyzed reaction rate of PAA and I - is by 5 orders of magnitude larger than that of H 2 O 2 with I - . Several techniques for detection of PAA are based on this concept.…”

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confidence: 99%

Simultaneous Potentiometric Determination of Peracetic Acid and Hydrogen Peroxide

2003

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A rapid and highly selective potentiometric method for the simultaneous analysis of peracetic acid (PAA) and hydrogen peroxide (H2O2) has been proposed, for the first time, using glassy carbon (GC) as an indicator electrode and I2/I- potential buffer. On the basis of the large difference in the reaction rates of PAA and H2O2 with I-, which was confirmed using stopped-flow spectrophotometry, a transient potential response corresponding to the reactions of the two species with I- was observed. The response times were typically a few seconds and several minutes for PAA and H2O2, respectively. The effects of the concentrations of molybdate catalyst, H+, I2, and I- in the potential buffer on the selectivity as well as the sensitivity were examined. The potential response obtained using the GC indicator electrode was found to be Nernstian over a wide range of their concentrations (typically from micromolar to millimolar) with slopes of 30.5 and 29.5 mV for PAA and H2O2, respectively (in close agreement with the theoretical value, that is, 29.6 mV). O2 was found to have no substantial effect on the potential change at the GC electrode in the present potential buffer.

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confidence: 99%

Simultaneous Potentiometric Determination of Peracetic Acid and Hydrogen Peroxide

2003

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“…In spite of their requirement for external calibration, photometric methods for PAA determination are used in the classical cuvette format 14 as well as for flow injection measurements. [15][16][17] In combination with starch as indicator, iodide is used for test strips with visual control of the iodine formed during oxidation by PAA. 18 A very interesting approach is the application of test strips with visual or photometric reading as described by Fischer et al 19 The presence of the iodide ion as catalyst in the oxidation of chromogenic substrates (including aromatic amines, phenols and benzidines) is utilized to achieve selectivity for PAA in the presence of hydrogen peroxide.…”

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confidence: 99%

Selective Photometric Determination of Peroxycarboxylic Acids in the Presence of Hydrogen Peroxide

Pinkernell¹,

Lüke²,

Kärst³

1997

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“…Further methods for the determination of PAA include photometry, − electrochemical sensing, − gas chromatography, , and direct liquid chromatography. , None of these methods, however, is suited to determine both PAA and hydrogen peroxide selectively and simultaneously.…”

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confidence: 99%

Simultaneous HPLC Determination of Peroxyacetic Acid and Hydrogen Peroxide

1997

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The first instrumental method for simultaneous determination of peroxyacetic acid (PAA) and hydrogen peroxide has been developed. The successive quantitative reaction of PAA with methyl p-tolyl sulfide (MTS) and hydrogen peroxide with triphenylphosphine (TPP) yields the corresponding sulfoxide MTSO and phosphine oxide TPPO. The reagents and their oxides are separated by HPLC on reversed-phase columns with acetonitrile/water gradient elution within 5 min. External calibration with the solid standards of MTSO and TPPO leads to a very accurate and reliable method. Samples are stable and can be stored after derivatization for several days prior to analysis. Real samples from brewery disinfection were analyzed in comparison to titration with excellent correlation.

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On-line-Analytik für Peressigsäure / On-line-Analytics for Peracetic Acid

Cited by 15 publications

References 0 publications

Simultaneous Potentiometric Determination of Peracetic Acid and Hydrogen Peroxide

Simultaneous Potentiometric Determination of Peracetic Acid and Hydrogen Peroxide

Selective Photometric Determination of Peroxycarboxylic Acids in the Presence of Hydrogen Peroxide

Simultaneous HPLC Determination of Peroxyacetic Acid and Hydrogen Peroxide

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