Atmospheric methanesulfonic acid and non-sea-salt sulfate at Fanning and American Samoa
نویسندگان
چکیده
منابع مشابه
The Distribution of Lead Between Sea Salt, Dust, and Lead-Rich Aerosols in the Mid South Pacific Easterlies at American Samoa
Aerosols in the South Pacific Easterlies have been sampled at American Samoa with a cascade impactor and analysed for Pb, Ba, K, Ca, Sr, and Rb by isotope dilution mass spectrometry using ultraclean procedures. Some 84% of the Pb was found in fine (-<0.5/am) aerosols which were collected on the backup filter with an efficiency of only 33%. Sea salt and eroded terrestrial material (dust) contain...
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To the Editor: Leptospirosis is common in the Pacifi c Islands (66.4 cases/100,000 population/ year compared with 5 cases/100,000 population/year globally) (1) and is often misdiagnosed as dengue because of overlapping clinical features, poor awareness, and inadequate diagnostic facilities (2,3). Clinical manifestations range from asymptomatic to severe disease with pulmonary hemorrhage and ren...
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although there are studies on pragmatic assessment, to date, literature has been almost silent about native and non-native english raters’ criteria for the assessment of efl learners’ pragmatic performance. focusing on this topic, this study pursued four purposes. the first one was to find criteria for rating the speech acts of apology and refusal in l2 by native and non-native english teachers...
15 صفحه اولSulfate Formation in Sea-Salt Aerosols: Constraints from Oxygen Isotopes
[1] We use observations of the mass-independent oxygen isotopic composition (DO) of sulfate in the marine boundary layer (MBL) to quantify the sulfate source from aqueous SO2 (S(IV)) oxidation by O3 in alkaline sea-salt aerosols. Oxidation by O3 imparts a large DO signature to the resulting sulfate (8.8%) relative to oxidation by H2O2 (0.9%) or by OH or O2 (0%). Ship data from two Indian Ocean ...
متن کاملComment on "Reactions at interfaces as a source of sulfate formation in sea-salt particles" (II).
Interfaces As a Source of Sulfate Formation in Sea-Salt Particles” (II) In the laboratory, Laskin et al. (1) studied the role of the surface reaction OH Cl 3 OH Cl for influencing the pH and oxidation of S(IV) in the marine boundary layer. They concluded that it increases the sulfate production rate in tropospheric sea-salt particles. However, in their extrapolation to atmospheric conditions th...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 1985
ISSN: 0094-8276
DOI: 10.1029/gl012i007p00437