A new method for determining the concentration of atmospheric alcohols using the nitrite formation reaction

Nguyen, Ha Thi-Hoang; Fujio, Yoshifumi; Takenaka, Norimichi; Bandow, Hiroshi; Maeda, Yasuhiro

doi:10.1016/s0003-2670(99)00539-5

Cited by 8 publications

(13 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The method of preparing diluted alcohol in the nitrogen sample in a glass bottle has been mentioned in the literature. 18 The alcohol and nitrogen dioxide reaction occurred on the surface of the glass beads to yield alkyl nitrite. A 0.5-mL air mixture containing alkyl nitrites produced in the glass tubes were injected into the GC-ECD by a gastight syringe.…”

Section: Methodsmentioning

confidence: 99%

“…14 In an earlier study, we used Pyrex glass bottles for ambient air sampling and the atmospheric alcohols were allowed to react with nitrogen dioxide on the glass surface of the bottle to convert the alcohols into the corresponding alkyl nitrites. 18 The nitrite thus produced was selectively analyzed by gas chromatography with an electron capture detector (GC-ECD). The ppbv concentration level of alcohols in ambient air could be detected without preconcentration.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Flow Analysis Method for Determining the Concentration of Methanol and Ethanol in the Gas Phase Using the Nitrite Formation Reaction

et al. 2000

Self Cite

View full text Add to dashboard Cite

This paper presents a flow determination method for low molecular weight alcohols (methanol, ethanol) in the gas phase using the nitrite formation reaction, which was developed from an earlier method using a glass bottle. In this method, the ambient air and nitrogen dioxide (1,000 ppmv) were allowed to continuously flow in a glass tube, which had been filled with 10 g of Pyrex glass beads. The flow rates of the ambient air and nitrogen dioxide were 30 and 20 cm3/min, respectively. The gas-phase alkyl nitrites produced by the dark reaction of atmospheric alcohols and nitrogen dioxide on the Pyrex glass beads were then analyzed by gas chromatography with an electron capture detector. The alcohol concentrations of the samples were calculated using a calibrated conversion factor for each alcohol to its nitrite. The detection limits for the methanol and ethanol are 0.7 and 0.5 ppbv, respectively. This flow method was used to determine the atmospheric alcohol concentrations and was found to have the advantages of a short sampling time and simple quantitative procedure compared with the previously reported method (glass bottle method). The feasibility of this method was also established.

show abstract

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

Flow Analysis Method for Determining the Concentration of Methanol and Ethanol in the Gas Phase Using the Nitrite Formation Reaction

et al. 2000

Self Cite

View full text Add to dashboard Cite

show abstract

“…Nguyen et al 67 recently described a method for air analysis of alcohols that uses the sampling of 200 mL air in glass bottles and subsequent derivatisation with nitrogen dioxide. After 30 min, the alkyl nitrites formed were analysed with GC-ECD.…”

Section: Sampling and Enrichment: Airmentioning

confidence: 99%

Analysis of fuel oxygenates in the environment

Schmidt

Duong

Berg

et al. 2001

Analyst

View full text Add to dashboard Cite

“…Alkyl nitrites were found to be a good derivatization for alcohol determination, and alcohol in the gas phase at the trace level was successfully quantitatively analyzed in an earlier study: alkyl nitrite in the gas phase was formed from a reaction of alcohol and nitrogen dioxide on a Pyrex glass surface. 11 Alkyl nitrite can also be formed from an alcohol and nitrous acid reaction, which is conveniently applied for alcohol determination in the aqueous phase. In this study, we propose a method for the determination of liquid alcohols at µg/L concentrations using the alkyl nitrite formation reaction.…”

Section: Introductionmentioning

confidence: 99%

Trace Level Determination of Low-Molecular-Weight Alcohols in Aqueous Samples Based on Alkyl Nitrite Formation and Gas Chromatography

et al. 2001

Self Cite

View full text Add to dashboard Cite

A simple and sensitive method for the determination of liquid methanol and ethanol at trace levels by an alkyl nitrite formation reaction has been established. Alcohol was allowed to react with nitrous acid, which was yielded from sulfuric acid and sodium nitrite in the solution, to form the corresponding alkyl nitrite in the hexane organic phase. Alkyl nitrites in hexane were analyzed by a gas chromatograph with an electron capture detector (GC-ECD). The detection limits, which were determined at a signal-to-noise ratio of 3, were 1.1 and 0.7 micrograms/L for methanol and ethanol, respectively, by 1 microL injection. The relative standard deviations for n = 8 were 4.0 and 3.3% for methanol and ethanol, respectively. The method was applied to determine the alcohol concentration in a rice paddy, pond water, tap water, and well water. Those aqueous samples were also spiked with standard alcohols; the average recoveries of spiked methanol and ethanol were 98 and 91% with relative standard deviations of 6.1 and 4.0%, respectively.

show abstract

A new method for determining the concentration of atmospheric alcohols using the nitrite formation reaction

Cited by 8 publications

References 22 publications

Flow Analysis Method for Determining the Concentration of Methanol and Ethanol in the Gas Phase Using the Nitrite Formation Reaction

Flow Analysis Method for Determining the Concentration of Methanol and Ethanol in the Gas Phase Using the Nitrite Formation Reaction

Analysis of fuel oxygenates in the environment

Trace Level Determination of Low-Molecular-Weight Alcohols in Aqueous Samples Based on Alkyl Nitrite Formation and Gas Chromatography

Contact Info

Product

Resources

About