Chemiluminescence method for the determination of nitrogen dioxide

Maeda, Yasuhiro; Aoki, Kenji; Munemori, Makoto

doi:10.1021/ac50052a022

Cited by 119 publications

(54 citation statements)

References 22 publications

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“…Na2SO3 also increases the emitted light signal, as shown in Fig. 4(B), which is consistent with the results of Maeda et al (1980).…”

Section: The Luminol Solutionsupporting

confidence: 91%

“…The next step of the NO 2 -luminol reaction is not well understood. Maeda et al (1980) reported that in the absence of KOH in luminol solution, no chemiluminescence was observed. When the concentration of KOH exceeded 10 −5 mol/l chemiluminescence was detected and the intensity was increased with the increase of KOH concentration.…”

Section: The Luminol Solutionmentioning

confidence: 99%

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The development of a nitrogen dioxide sonde

et al. 2010

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Abstract.A growing number of space-borne instruments measures nitrogen dioxide (NO 2 ) concentrations in the troposphere, but validation of these instruments is hampered by the lack of ground-based and in situ profile measurements.The Royal Netherlands Meteorological Institute (KNMI) has developed a working NO 2 sonde. The sonde is attached to a small meteorological balloon and measures a tropospheric NO 2 profile. The NO 2 sonde has a vertical resolution of 5 m and a measurement range between 1 and 100 ppbv. The instrument is light in weight (0.7 kg), cheap (disposable), energy efficient and not harmful to the environment or the person who finds the package after use. The sonde uses the chemiluminescent reaction of NO 2 in an aqueous luminol solution. The NO 2 -luminol reaction produces faint blue/purple light (at about 425 nm), which is detected by an array of silicon photodiodes. The luminol solution is optimised to be specific to NO 2 .

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“…Na2SO3 also increases the emitted light signal, as shown in Fig. 4(B), which is consistent with the results of Maeda et al (1980).…”

Section: The Luminol Solutionsupporting

confidence: 91%

Section: The Luminol Solutionmentioning

confidence: 99%

The development of a nitrogen dioxide sonde

et al. 2010

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“…The NO2 concentration was measured using a commercial luminol detector (LMA-3; Scintrex/Unisearch) which detects NO2 based on the chemiluminescence reaction between NO2 and luminol solution (Luminol II; Unisearch Associates Inc.). 10 To confirm the linearity and quantify the sensitivity of the luminol detector, multiple point calibrations were performed routinely using a standard NO2 gas (10.5 ppmv; Takachiho Chemical Industrial Co. Ltd.) which was diluted with a dilution instrument (AFC-120; Kimoto Electric Co., Ltd.) prior to use. The calibrations were carried out in the presence of 3 ppm NO and 10% CO to eliminate possible interferences from them.…”

Section: Methodsmentioning

confidence: 99%

A Calibration Method for Measurement of Small Alkyl Organic Peroxy Radicals by Chemical Amplifier

Takami

Hatakeyama

2006

ANAL. SCI.

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Peroxy radicals (hydroperoxy radical HO2 and organic peroxy radicals RO2, collectively known as PO2) play a critical role in atmospheric chemistry. 1,2 Accurate measurement of those species is important to understand the chemical processes occurring in the atmosphere. Chemical amplifier (CA) is a widely used technique to measure peroxy radicals both in field observation and laboratory work owing to its relatively light weight and low cost. The details of the technique can be found elsewhere. 3,4 Briefly, it utilizes a series of chain reactions through which initial small amounts of HO2 are converted to large amounts of NO2 in the presence of excess amounts of NO and CO: AF, a key parameter for a CA instrument, can be obtained by calibration of the instrument against a known concentration of radicals. Thus, AF actually corresponds to the calibration factor (CF) for the instrument. The widely used calibration source is HO2. However, the conversion efficiency of RO2 into HO2 in CA is not unity and varies with the structure of the organic group R. This is mainly due to the coexistence of reactions (R6) and (R7), which compete with (R4) and (R5):As a result, the CF for RO2 (CFRO 2 ) is not equal to the CF for HO2 (CFHO 2 ) and varies with different RO2. On the other hand, atmospheric RO2 can differ with the locations. Therefore, it is significant to search for a calibration method for RO2 measurement. Hastie et al. 4 employed a calibration source of peroxyacetyl radical from thermal decomposition of PAN (peroxyacetyl nitrate, CH3CO3NO2) and obtained a CF of 120. Clemitshaw et al. 5 calibrated their CA using a source of CH3O2 from the photolysis of CH3l at 253.7 nm in air and obtained a CF of 175.In this paper, we propose a different method to determine the CF for methyl and ethyl peroxy radicals. As far as we know, the method has not been reported to date. ExperimentalIt is known that photolysis of water vapor in air leads to production of equal amounts of HO2 and OH: 6 H2O + hν ⎯→ H + OH (R8) Studies, Tsukuba, Japan A new method is proposed to determine the calibration factor (CF) of methyl and ethyl peroxy radicals in a chemical amplifier. The radical source comes from the reactions of excess methane and ethane, respectively, with known concentrations of OH radicals generated by the photolysis of water vapor at 184.9 nm in air in a flow tube. This yields a mixed radical source with equal amounts of HO2 and RO2 (R = CH3, C2H5). The CF for RO2 can be derived from the CF for HO2 and an average CF for the mixed radicals. The reliability of the method was evaluated by comparing the CF ratios of RO2 to HO2 obtained from both the experiments and theoretical calculations.

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“…As noted by Maeda et al 37 and Wendel et al, 38 NO 2 reacts with luminol in water solution, and the resulting compound emits visible radiation around 465 nm, resulting in a real-time, direct measurement. In one version of the method, the reaction takes place in a lightproof chamber on the surface of a wick saturated with the water-based luminol solution and mounted in front of a photomultiplier tube.…”

Section: Luminol Chemiluminescencementioning

confidence: 96%

Preparing to Measure the Effects of the NO_xSIP Call— Methods for Ambient Air Monitoring of NO, NO₂, NO_y, and Individual NO_zSpecies

McClenny

Williams

Cohen

et al. 2002

Journal of the Air & Waste Management Association

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The capping of stationary source emissions of NO x in 22 states and the District of Columbia is federally mandated by the NO x SIP Call legislation with the intended purpose of reducing downwind O 3 concentrations. Monitors for NO, NO 2 , and the reactive oxides of nitrogen into which these two compounds are converted will record data to evaluate air quality model (AQM) predictions. Guidelines for testing these models indicate the need for semicontinuous measurements as close to real time as possible but no less frequently than once per hour. The measurement uncertainty required for AQM testing must be less than ±20% (±10% for NO 2 ) at mixing ratios of 1 ppbv and higher for NO, individual NO z component compounds, and NO y . This article is a review and discussion of different monitoring methods, some currently used in research and others used for routine monitoring. The performance of these methods is compared with the monitoring guidelines. Recommendations for advancing speciated and total NO y monitoring technology and a listing of demonstrated monitoring approaches are also presented.

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Chemiluminescence method for the determination of nitrogen dioxide

Cited by 119 publications

References 22 publications

The development of a nitrogen dioxide sonde

The development of a nitrogen dioxide sonde

A Calibration Method for Measurement of Small Alkyl Organic Peroxy Radicals by Chemical Amplifier

Preparing to Measure the Effects of the NO_xSIP Call— Methods for Ambient Air Monitoring of NO, NO₂, NO_y, and Individual NO_zSpecies

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Chemiluminescence method for the determination of nitrogen dioxide

Cited by 119 publications

References 22 publications

The development of a nitrogen dioxide sonde

The development of a nitrogen dioxide sonde

A Calibration Method for Measurement of Small Alkyl Organic Peroxy Radicals by Chemical Amplifier

Preparing to Measure the Effects of the NOxSIP Call— Methods for Ambient Air Monitoring of NO, NO2, NOy, and Individual NOzSpecies

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Product

Resources

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Preparing to Measure the Effects of the NO_xSIP Call— Methods for Ambient Air Monitoring of NO, NO₂, NO_y, and Individual NO_zSpecies