ISSN:
1573-0662
Keywords:
Peroxyacetyl nitrate (PAN)
;
solubility
;
hydrolysis
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Geosciences
Notes:
Abstract The effect of temperature on the solubility of PAN and on its hydrolysis rate in near-neutral and slightly acidic water were studied in a bubble column apparatus. The results obtained are a Henry's law coefficient H=10−9.04±0.6 exp[(6513±376)/T] M atm−1, and a first-order hydrolysis rate constant k=106.60±1.0 exp[(−6612±662)/T] s-1, which was independent of pH in the range 3.2≤pH≤6.7. The products formed are nitrite and nitrate in approximately equal proportions under near-neutral conditions. At a pH〈4, nitrite is oxidized in a secondary reaction, and nitrate becomes the only product at low pH. Previously measured deposition velocities of PAN on stagnant water surfaces are shown to be hydrolysis rate limited.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00115778
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