Sensitive Spectrophotometric Determination of Formaldehyde by Inhibition of the Malachite Green–Sulfite Reaction

@article{Afkhami1999SensitiveSD,
  title={Sensitive Spectrophotometric Determination of Formaldehyde by Inhibition of the Malachite Green–Sulfite Reaction},
  author={Abbas Afkhami and Mostafa Rezaei},
  journal={Microchemical Journal},
  year={1999},
  volume={63},
  pages={243-249}
}
Abstract A simple, sensitive, and selective method for rapid determination of ultratrace quantities of formaldehyde based on its inhibitory effect on the malachite green–sulfite reaction is described. The reaction is monitored spectrophotometrically by measuring the decrease in absorbance at 613 nm at a fixed time of 61 s. The method allows the determination of formaldehyde in the range 14–700 ng/ml. The limit of detection was 7 ng/ml and the relative standard deviation for 10 determinations of… 
Determination of formaldehyde by its catalytic effect on the oxidation of pyrogallol red by bromate using flow-injection spectrophotometric detection
This paper reports a simple and sensitive flow-injection method for the spectrophotometric determination of formaldehyde based on the catalytic effect of formaldehyde on the oxidation of pyrogallol
Determination of trace amount of formaldehyde base on a bromate-Malachite Green system.
Development of novel reagent for Hantzsch reaction for the determination of formaldehyde by spectrophotometry and fluorometry.
A novel reagent, acetoacetanilide (AAA), was introduced to the determination of formaldehyde based on Hantzsch reaction. A simple and highly sensitive fluorometric method was achieved by using AAA.
Sensitive fluorimetric determination of formaldehyde by the co-quenching effect of formaldehyde and sulfite on the fluorescence of tetra-substituted amino aluminium phthalocyanine.
TLDR
A novel and sensitive fluorimetric method was developed based on the co-quenching effect of formaldehyde and sulfite on the fluorescence of tetra-substituted amino aluminium phthalocyanine and applied to the analysis of real samples with satisfactory results.
Flow-injection chemiluminescence determination of formaldehyde with a bromate-rhodamine 6G system.
TLDR
A novel flow-injection chemiluminescence system based on a strong enhance effect of formaldehyde on the weak CL emission of the reaction between potassium bromate and rhodamine 6G in a sulfuric acid medium to determine formaldehyde in the air samples is described.
Determination of Formaldehyde Traces in Fabric and in Indoor Air by a Kinetic Fluorimetric Method
A simple and sensitive kinetic fluorimetric method is reported for the determination of trace amount of formaldehyde. The proposed method is based on the catalytic effect of formaldehyde on the
Review of Spectrophotometric Methods for Determination of Formaldehyde
Abstract Formaldehyde is a toxic chemical commonly found in the environment. Owing to its increased usage, its incidence has also increased, and there is a need to determine the concentration of
Rapid and sensitive determination of formaldehyde in some beverages and foods by flow-injection fluorimetric analysis.
Summary A simple and sensitive flow-injection (FI) method for rapid determination of formaldehyde in beverage and food products has been developed. Adopting stop-flow technique, the proposed
Fast determination of total aldehydes in rainwaters in the presence of interfering compounds
C1–C5 aldehydes are toxic substances formed by chemical transformation of organic compounds into the atmosphere. Actual methods used to analyze aldehydes in environmental samples are usually slow and
...
...

References

SHOWING 1-10 OF 16 REFERENCES
Fluorometric Enzymatic Method for Determination of Formaldehyde
Abstract Two sensitive fluorometric enzymatic methods for the determination of formaldehyde are described. These methods were developed using the enzyme formaldehyde dehydrogenase to catalyze the
Automated determination of formaldehyde in air without the use of tetrachloromercurate(II).
  • R. B. Walters
  • Environmental Science
    American Industrial Hygiene Association journal
  • 1983
An existing modified (no mercury reagent) pararosaniline method for the determination of formaldehyde in air has been adapted for continuous monitoring using a CEA Instruments, Inc. Model 555
Solid sorbent tube sampling and ion chromatographic analysis of formaldehyde.
TLDR
A new method for the collection and analysis of atmospheric formaldehyde is described, which generated and collected on solid sorbent tubes containing impregnated charcoal which converted formaldehyde to formate and was analyzed by ion chromatography.
A new method for spectrophotometric determination of formaldehyde in biologicals.
  • K. P. Shrivastaw, S. Singh
  • Chemistry
    Biologicals : journal of the International Association of Biological Standardization
  • 1995
Investigations of the formation of bis-chloromethyl ether in simulated hydrogen chloride-formaldehyde atmospheric environments.
TLDR
It was found that bis-chloromethyl ether does not form in detectable amounts when formaldehyde and hydrogen chloride coexist in air at concentrations of a few parts per million.
Spectrophotometric determination of aldehydes in alcohols
A simple and sensitive method was described for the determination of formaldehyde and acetaldehyde in methanol and ethanol, respectively. A limit for aldehydes in alcohols is a necessary requiremen...
...
...