Influence of the Sea Surface Microlayer on Oceanic Iodine Emissions.
Influence of the Sea Surface Microlayer on Oceanic Iodine Emissions.
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DOI:
10.1021/acs.est.0c02736
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发表时间:
2020-10-20
影响因子:
11.4
通讯作者:
Carpenter LJ
中科院分区:
文献类型:
--
作者:
Tinel L;Adams TJ;Hollis LDJ;Bridger AJM;Chance RJ;Ward MW;Ball SM;Carpenter LJ
The influence of organic compounds on iodine (I2) emissions from the O3 + I– reaction at the sea surface was investigated in laboratory and modeling studies using artificial solutions, natural subsurface seawater (SSW), and, for the first time, samples of the surface microlayer (SML). Gas-phase I2 was measured directly above the surface of liquid samples using broadband cavity enhanced absorption spectroscopy. I2 emissions were consistently lower for artificial seawater (AS) than buffered potassium iodide (KI) solutions. Natural seawater samples showed the strongest reduction of I2 emissions compared to artificial solutions with equivalent [I–], and the reduction was more pronounced over SML than SSW. Emissions of volatile organic iodine (VOI) were highest from SML samples but remained a negligible fraction (<1%) of the total iodine flux. Therefore, reduced iodine emissions from natural seawater cannot be explained by chemical losses of I2 or hypoiodous acid (HOI), leading to VOI. An interfacial model explains this reduction by increased solubility of the I2 product in the organic-rich interfacial layer of seawater. Our results highlight the importance of using environmentally representative concentrations in studies of the O3 + I– reaction and demonstrate the influence the SML exerts on emissions of iodine and potentially other volatile species.
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影响因子:
16.6
作者:
Cuevas CA;Maffezzoli N;Corella JP;Spolaor A;Vallelonga P;Kjær HA;Simonsen M;Winstrup M;Vinther B;Horvat C;Fernandez RP;Kinnison D;Lamarque JF;Barbante C;Saiz-Lopez A
通讯作者:
Saiz-Lopez A
DOI:
10.1021/je010192t
发表时间:
2002-03-01
期刊:
JOURNAL OF CHEMICAL AND ENGINEERING DATA
影响因子:
--
作者:
Harner, T;Shoeib, M
通讯作者:
Shoeib, M
影响因子:
11.4
作者:
Bichsel, Y;von Gunten, U
通讯作者:
von Gunten, U
影响因子:
2.9
作者:
Gladich, Ivan;Shepson, Paul B.;Szleifer, Igal
通讯作者:
Szleifer, Igal
影响因子:
11.4
作者:
Gantt, Brett;Sarwar, Golam;Saiz-Lopez, Alfonso
通讯作者:
Saiz-Lopez, Alfonso