A smog chamber study on the impact of aerosols on the photodegradation of chemicals in the troposphere

Behnke, Wolfgang; Nolting, F.; Zetzsch, Cornelius

doi:10.1016/0021-8502(87)90011-5

Cited by 34 publications

(31 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the temperature range 292-390 K the agreement between the absolute and relative rate studies is good. The room temperature relative rate data of Atkinson et al (1983a), , Behnke et al (1987Behnke et al ( , 1988 and McLoughlin et al (1993), which are not shown in the Arrhenius plot in Fig. 11, are also in good agreement with these data of Atkinson et al (1982a), Klein et al (1984), Donahue et al (1998) and DeMore and Bayes (1999).…”

Section: Oh+n-hexanesupporting

confidence: 74%

“…Chem. Phys., 3, 2233 -2307, 2003 www.atmos-chem-phys.org/acp/3/2233 / recommendation at 227 K. This good agreement of the relative rate data of (a re-evaluation of the earlier study of Baker et al, 1970), Hucknall et al (1975), Atkinson et al (1982b), Edney et al (1986), Behnke et al (1987) and DeMore and Bayes (1999) with absolute rate constant data means that these relative rate studies can be used with some confidence in the evaluations of rate data for ≥C 4 alkanes for which fewer absolute rate studies have been carried out.…”

Section: Oh+propanesupporting

confidence: 65%

“…The rate constants derived from the relative rate studies of Baker et al (1970) (as re-evaluated by , Hucknall et al (1975), Atkinson et al (1982b), Edney et al (1986), Behnke et al (1987), Finlayson-Pitts et al (1993) and DeMore and Bayes (1999) are in generally excellent agreement with the recommendation, to within 7%, 5%, 2%, 3%, 15%, 4% and 8%, respectively. The rate constants derived from the relative rate measurements of DeMore and Bayes (1999) trend from being 2% higher than the recommendation at 428 K to being 7% lower than the Atmos.…”

Section: Oh+propanementioning

confidence: 54%

“…The absolute rate studies of Abbatt et al (1990), Talukdar et al (1994) and Donahue et al (1998) are in good agreement at room temperature, and those of Talukdar et al (1994) and agree well over the temperature range common to both studies (300-370 K). However, rate constants derived from the relative rate studies of Atkinson et al (1982b), Behnke et al (1987Behnke et al ( , 1988, Harris and Kerr (1988), Donaghy et al (1993) and DeMore and Bayes (1999) are consistently ∼10% lower that the absolute rate constants. Figure 9 shows an Arrhenius plot of the absolute rate constants of Abbatt et al (1990), Talukdar et al (1994) and Donahue et al (1998) together with the relative rate data of Baldwin and Walker (1979), Atkinson et al (1982b), Harris and Kerr (1988) and DeMore and Bayes (1999).…”

Section: Oh+n-pentanementioning

confidence: 82%

“…However, for the >C 3 alkanes and for the cycloalkanes, rate constants obtained from relative rate studies are an important part of the data-base (and in some cases are the only data available), and the recommendations then use a combination of absolute and relative rate data. As shown in Table 3, for a series of C 3 -C 10 n-alkanes and cyclohexane at room temperature the relative rate studies of Atkinson et al (1982a, b), Benhke et al (1987Benhke et al ( , 1988, and DeMore and Bayes (1999) are in generally excellent agreement, and these relative rate studies severely a Based on the data cited in the table from the studies of Atkinson et al (1982b), Behnke et al (1987Behnke et al ( , 1988 and DeMore and Bayes (1999). There are a number of alkanes for which the OH radical reaction rate constants have been measured relative to those for the reactions of OH radicals with H 2 or CO, often at elevated temperatures.…”

Section: Introductionmentioning

confidence: 77%

See 4 more Smart Citations

Kinetics of the gas-phase reactions of OH radicals with alkanes and cycloalkanes

2003

View full text Add to dashboard Cite

Abstract. The available database concerning rate constants for gas-phase reactions of the hydroxyl (OH) radical with alkanes through early 2003 is presented over the entire temperature range for which measurements have been made (∼180-2000 K). Measurements made using relative rate methods are re-evaluated using recent rate data for the reference compound (generally recommendations from this review). In general, whenever more than one study has been carried out over an overlapping temperature range, recommended rate constants or temperature-dependent rate expressions are presented. The recommended 298 K rate constants, temperature-dependent parameters, and temperature ranges over which these recommendations are applicable are listed in Table 1.

show abstract

Section: Oh+n-hexanesupporting

confidence: 74%

Section: Oh+propanesupporting

confidence: 65%

Section: Oh+propanementioning

confidence: 54%

Section: Oh+n-pentanementioning

confidence: 82%

Section: Introductionmentioning

confidence: 77%

See 3 more Smart Citations

Kinetics of the gas-phase reactions of OH radicals with alkanes and cycloalkanes

2003

View full text Add to dashboard Cite

show abstract

Heterogeneous Photochemical Sources of Atomic Cl in the Troposphere

Zetzsch

Behnke

1992

Ber Bunsenges Phys Chem

Self Cite

View full text Add to dashboard Cite

The reaction of N2O5 with wet NaCl aerosol is observed to produce ClNO2 at high yields. The sticking coefficient of N2O5 on NaCl aerosol is determined in a smog chamber (in an inserted teflon bag) at 292 K, and the rate constant for the consecutive chemical reaction leading to formation of ClNO2 is determined at various relative humidities between 71 and 92%. A preliminary evaluation of the experiments yields a sticking coefficient of 0.03(−0,01+0,02), similar to that reported for pure water droplets. At the deliquescence point of NaCl, ∼ 50% of the collisions lead to the formation of ClNO2. This portion decreases slightly with increasing humidity (i.e. liquid water content of the NaCl aerosol). The process is expected to be an efficient sink of N2O5 in the troposphere. Model calculations indicate a significant contribution of atomic Cl to global marine tropospheric chemistry at higher latitudes of the northern hemisphere. Phosgene, chloroacetone, and 1,1‐dichloroacetone are observed as products from a heterogeneous chlorination in the aerosol smog chamber.

show abstract

Kinetic study of OH radical reaction with n‐heptane and n‐hexane at 240–340K using the relative rate/discharge flow/mass spectrometry (RR/DF/MS) technique

Crawford¹,

Dang²,

Hoang³

et al. 2011

Int J of Chemical Kinetics

View full text Add to dashboard Cite

The kinetics of reactions of OH radical with n-heptane and n-hexane over a temperature range of 240-340K has been investigated using the relative rate combined with discharge flow/mass spectrometry (RR/DF/MS) technique. The rate constant for the reaction of OH radical with n-heptane was measured with both n-octane and n-nonane as references. At 298K, these rate constants were determined to be k 1,octane = (6.68 ± 0.48) × 10 −12 cm 3 molecule −1 s −1 and k 1,nonane = (6.64 ± 1.36) × 10 −12 cm 3 molecule −1 s −1 , respectively, which are in very good agreement with the literature values. The rate constant for reaction of n-hexane with the OH

show abstract

A smog chamber study on the impact of aerosols on the photodegradation of chemicals in the troposphere

Cited by 34 publications

References 1 publication

Kinetics of the gas-phase reactions of OH radicals with alkanes and cycloalkanes

Kinetics of the gas-phase reactions of OH radicals with alkanes and cycloalkanes

Heterogeneous Photochemical Sources of Atomic Cl in the Troposphere

Kinetic study of OH radical reaction with n‐heptane and n‐hexane at 240–340K using the relative rate/discharge flow/mass spectrometry (RR/DF/MS) technique

Contact Info

Product

Resources

About