Abstract
Humic substances that preferentially adsorb at the air/water interfaces of water or aerosols consist of both fulvic and humic acid. To investigate the chemical reactivity for the heterogeneous reaction of gaseous ozone, O 3(g), with aqueous iodide, I -(aq), in the presence of standard fulvic acid, humic acid, or alcohol, cavity ring-down spectroscopy was used to detect gaseous products, iodine, I 2(g) and an iodine monoxide radical, IO(g). Fulvic acid enhanced the I 2(g) production yield, but not the IO(g) yield. Humic acid, n-hexanol, n-heptanol, and n-octanol did not affect the yields of I 2(g) or IO(g). We can infer that the carboxylic group contained in fulvic acid promotes the I 2(g) emission by supplying the requisite interfacial protons more efficiently than water on its surface.
| Original language | English |
|---|---|
| Pages (from-to) | 5779-5783 |
| Number of pages | 5 |
| Journal | Journal of Physical Chemistry A |
| Volume | 116 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - Jun 21 2012 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
Cite this
Iodine emission in the presence of humic substances at the water's surface. / Hayase, Sayaka; Yabushita, Akihiro; Kawasaki, Masahiro.
In: Journal of Physical Chemistry A, Vol. 116, No. 24, 21.06.2012, p. 5779-5783.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Iodine emission in the presence of humic substances at the water's surface
AU - Hayase, Sayaka
AU - Yabushita, Akihiro
AU - Kawasaki, Masahiro
PY - 2012/6/21
Y1 - 2012/6/21
N2 - Humic substances that preferentially adsorb at the air/water interfaces of water or aerosols consist of both fulvic and humic acid. To investigate the chemical reactivity for the heterogeneous reaction of gaseous ozone, O 3(g), with aqueous iodide, I -(aq), in the presence of standard fulvic acid, humic acid, or alcohol, cavity ring-down spectroscopy was used to detect gaseous products, iodine, I 2(g) and an iodine monoxide radical, IO(g). Fulvic acid enhanced the I 2(g) production yield, but not the IO(g) yield. Humic acid, n-hexanol, n-heptanol, and n-octanol did not affect the yields of I 2(g) or IO(g). We can infer that the carboxylic group contained in fulvic acid promotes the I 2(g) emission by supplying the requisite interfacial protons more efficiently than water on its surface.
AB - Humic substances that preferentially adsorb at the air/water interfaces of water or aerosols consist of both fulvic and humic acid. To investigate the chemical reactivity for the heterogeneous reaction of gaseous ozone, O 3(g), with aqueous iodide, I -(aq), in the presence of standard fulvic acid, humic acid, or alcohol, cavity ring-down spectroscopy was used to detect gaseous products, iodine, I 2(g) and an iodine monoxide radical, IO(g). Fulvic acid enhanced the I 2(g) production yield, but not the IO(g) yield. Humic acid, n-hexanol, n-heptanol, and n-octanol did not affect the yields of I 2(g) or IO(g). We can infer that the carboxylic group contained in fulvic acid promotes the I 2(g) emission by supplying the requisite interfacial protons more efficiently than water on its surface.
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UR - http://www.scopus.com/inward/citedby.url?scp=84862670543&partnerID=8YFLogxK
U2 - 10.1021/jp2048234
DO - 10.1021/jp2048234
M3 - Article
C2 - 22257182
AN - SCOPUS:84862670543
VL - 116
SP - 5779
EP - 5783
JO - Journal of Physical Chemistry A
JF - Journal of Physical Chemistry A
SN - 1089-5639
IS - 24
ER -