NO3 radical, OH radical and O3-initiated secondary aerosol formation from aliphatic amines

Tang, Xiaochen; Price, Derek J.; Praske, Eric; Lee, Su Anne; Shattuck, Morgan A.; Purvis-Roberts, Kathleen L.; Silva, Philip J.; Asa-Awuku, Akua; Cocker, David R.

doi:10.1016/j.atmosenv.2013.02.024

Cited by 50 publications

(48 citation statements)

References 44 publications

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“…Similarly, dry reactions between TMA and N 2 O 5 produced organicdominant (total aerosol salt mass fraction, ε s , < 10 %) secondary aerosol with comparable hygroscopicity (κ ∼ 0.20, Table 1). In humid experiments, nitric acid produced by N 2 O 5 and NO 3 can be directly neutralized by TMA and firstgeneration aerosol products to form inorganic salts (Tang et al, 2013). PILS-IC data confirmed the presence of TMA + , DMA + , MA + , and NO − 3 ions in the aerosol phase.…”

Section: Trimethylamine (Tma)supporting

confidence: 56%

“…In humid experiments, water vapor was generated by bubbling purified air through distilled water and then passing the air through a 1 µm particle filter; RH was monitored using a LI-COR ® LI-840A CO 2 /H 2 O analyzer. Additional details of the chamber facility, aerosol formation yield, and experimental protocols are described in Tang et al (2013).…”

Section: Experimental Setup and Instrumentationmentioning

confidence: 99%

“…BA is a primary aliphatic amine that is less atmospherically abundant than TMA, but it has been detected at high concentrations near dairies, with concentration up to 187 ppb (Rabaud et al, 2003). Tang et al (2013) reported the aerosol formation potential and the chemical nature (inorganic/organic) of the two aliphatic amines (TMA and BA). Tang et al (2013) also discussed the effect of environmentally relative humidity on the reaction pathway and aerosol composition.…”

Section: Introductionmentioning

confidence: 99%

“…TMA is a tertiary amine precursor known to form secondary organic aerosol (SOA) with hydroxyl radical (OH), ozone (O 3 ) (Murphy et al, 2007) and nitrate radical (NO 3 ) (Silva et al, 2008). Ambient studies show that mass of TMA particle phase amines is dependent on relative humidity (RH; Glagolenko and Phares, 2004;Zhang et al, 2012;Rehbein et al, 2011;Tang et al, 2013). BA is a primary aliphatic amine that is less atmospherically abundant than TMA, but it has been detected at high concentrations near dairies, with concentration up to 187 ppb (Rabaud et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

“…Tang et al (2013) reported the aerosol formation potential and the chemical nature (inorganic/organic) of the two aliphatic amines (TMA and BA). Tang et al (2013) also discussed the effect of environmentally relative humidity on the reaction pathway and aerosol composition. Here we investigate the CCN activity of aerosol formed from dry and humid reactions with NO 3 and OH.…”

Section: Introductionmentioning

confidence: 99%

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Cloud condensation nuclei (CCN) activity of aliphatic amine secondary aerosol

et al. 2014

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Abstract. Aliphatic amines can form secondary aerosol via oxidation with atmospheric radicals (e.g., hydroxyl radical and nitrate radical). The particle can contain both secondary organic aerosol (SOA) and inorganic salts. The ratio of organic to inorganic materials in the particulate phase influences aerosol hygroscopicity and cloud condensation nuclei (CCN) activity. SOA formed from trimethylamine (TMA) and butylamine (BA) reactions with hydroxyl radical (OH) is composed of organic material of low hygroscopicity (single hygroscopicity parameter, κ, ≤ 0.25). Secondary aerosol formed from the tertiary aliphatic amine (TMA) with N 2 O 5 (source of nitrate radical, NO 3 ) contains less volatile compounds than the primary aliphatic amine (BA) aerosol. As relative humidity (RH) increases, inorganic amine salts are formed as a result of acid-base reactions. The CCN activity of the humid TMA-N 2 O 5 aerosol obeys Zdanovskii, Stokes, and Robinson (ZSR) ideal mixing rules. The humid BA + N 2 O 5 aerosol products were found to be very sensitive to the temperature at which the measurements were made within the streamwise continuous-flow thermal gradient CCN counter; κ ranges from 0.4 to 0.7 dependent on the instrument supersaturation (ss) settings. The variance of the measured aerosol κ values indicates that simple ZSR rules cannot be applied to the CCN results from the primary aliphatic amine system. Overall, aliphatic amine aerosol systems' κ ranges within 0.2 < κ < 0.7. This work indicates that aerosols formed via nighttime reactions with amines are likely to produce hygroscopic and volatile aerosol, whereas photochemical reactions with OH produce secondary organic aerosol of lower CCN activity. The contributions of semivolatile secondary organic and inorganic material from aliphatic amines must be considered for accurate hygroscopicity and CCN predictions from aliphatic amine systems.

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Section: Trimethylamine (Tma)supporting

confidence: 56%

Section: Experimental Setup and Instrumentationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cloud condensation nuclei (CCN) activity of aliphatic amine secondary aerosol

et al. 2014

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The Existence of Nitrate Radicals in Irradiated TiO₂ Aqueous Suspensions in the Presence of Nitrate Ions

et al. 2018

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Evidence of the existence of nitrate radical in irradiated aqueous TiO2 suspensions in the presence of nitrate ions are reported for the first time. The joint use of UV/Vis and EPR spectroscopy showed that nitrate radicals are formed by hole induced oxidation of nitrate ions. Photocatalytic degradation of a model alkene compound allowed to highlight the presence of an intermediate organic nitrate deriving from nitrate radical attack to the double bond of the substrate. These results not only allow deeper understanding of photocatalytic processes, but open the route to new green photocatalytic syntheses initiated by nitrate radicals and to new insights in the field of atmospheric chemistry.

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The Existence of Nitrate Radicals in Irradiated TiO₂ Aqueous Suspensions in the Presence of Nitrate Ions

et al. 2018

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Evidence of the existence of nitrate radical in irradiated aqueous TiO suspensions in the presence of nitrate ions are reported for the first time. The joint use of UV/Vis and EPR spectroscopy showed that nitrate radicals are formed by hole induced oxidation of nitrate ions. Photocatalytic degradation of a model alkene compound allowed to highlight the presence of an intermediate organic nitrate deriving from nitrate radical attack to the double bond of the substrate. These results not only allow deeper understanding of photocatalytic processes, but open the route to new green photocatalytic syntheses initiated by nitrate radicals and to new insights in the field of atmospheric chemistry.

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NO3 radical, OH radical and O3-initiated secondary aerosol formation from aliphatic amines

Cited by 50 publications

References 44 publications

Cloud condensation nuclei (CCN) activity of aliphatic amine secondary aerosol

Cloud condensation nuclei (CCN) activity of aliphatic amine secondary aerosol

The Existence of Nitrate Radicals in Irradiated TiO₂ Aqueous Suspensions in the Presence of Nitrate Ions

The Existence of Nitrate Radicals in Irradiated TiO₂ Aqueous Suspensions in the Presence of Nitrate Ions

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NO3 radical, OH radical and O3-initiated secondary aerosol formation from aliphatic amines

Cited by 50 publications

References 44 publications

Cloud condensation nuclei (CCN) activity of aliphatic amine secondary aerosol

Cloud condensation nuclei (CCN) activity of aliphatic amine secondary aerosol

The Existence of Nitrate Radicals in Irradiated TiO2 Aqueous Suspensions in the Presence of Nitrate Ions

The Existence of Nitrate Radicals in Irradiated TiO2 Aqueous Suspensions in the Presence of Nitrate Ions

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Product

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The Existence of Nitrate Radicals in Irradiated TiO₂ Aqueous Suspensions in the Presence of Nitrate Ions

The Existence of Nitrate Radicals in Irradiated TiO₂ Aqueous Suspensions in the Presence of Nitrate Ions