Trace element concentrations in aerosols from the San Francisco Bay Area

Particulate emissions from fires in central Siberian Scots pine forests

“…This appears to be the primary means by which fire emissions acquire a significant quantity of chemical elements typically found only in soils (e.g., iron (Fe), calcium (Ca), aluminum (Al), silicon (Si)). These soil-based elements in the particulate emissions are often referred to as either trace elements or microelements (Mason 1966;John et al 1973;Rahn 1976;Kist 1987;Perelmann 1979). Some of these elements (e.g., potassium (K) and phosphorus (P)) are key nutrients for plant growth.…”

Influence of atmospherically transported aerosols on surface ocean water composition.

“…Concentrations of the 12 metals on the filter particulates at both stations are within a factor of 4 and only somewhat lower than concentrations of zinc, copper, cobalt, iron, manganese, vanadium, and aluminum on aerosols collected in San Francisco in 1973 (JOHN et al, 1973) (Table 6). The levels of lead, cadmium, silver, zinc, copper, cobalt, manganese, vanadium and aluminum in filtered atmospheric particulates from the rural, non industrial town of Chadron, Nebraska (STRUEMPLER, 1975) are only about 3 times lower than La Jolla, California (Table 6).…”

Particulate Matter Associated with Vehicles on the Road. II

“…Accordingly, the large contribution by vehicles to rural C and extractable organics as shown in Table 9 may be atypical. Second, nearly half of the H in the Allegheny tower experiment was H + and NH /: related to the H,SO, aerosol and its neutralization by NH,, and the rest of the H was probably present mainly as water associated with the H,SO, and sulfate, none of which is related to vehicle From Larsenand Konopinski (1962), Conlee et al (1967), Dams et al (1970), Friedlander (1973, John et al (1973), Gatz (1975), Hammerle and Pierson (1975), Hopke et al (1976), Paciga and Jervis (1976), Moyers et al (1977), Kowalczyk et al (1978), Stevens et al (1978Stevens et al ( , 1979, Kowalczyk (1979), Pierson and Russell (1979), Countess et al (1980), Lewis and Macias (1980), Ondov et al (1981), and Shah et al (1981).…”

“…We base our estimate on the 1977 Tuscarora data (1979 Allegheny, in the case of the extractable organics) and on pblished data for Boston, New York, Philadelphia, Baltimore, Washington, D.C., Toronto, Charleston West Virginia, Chicago, East Chicago, St. Louis, Denver, Houston, Tucson, Pasadena, California, San Francisco, and Portland, Oregon (Larsen and Konopinski, 1962;Conlee et al, 1967;Dams et al, 1970;Friedlander, 1973;John et al, 1973;Gatz, 1975;Hammerle and Pierson, 1975;Hopke et al, 1976;Paciga and Jervis, 1976;Moyers et al, 1977;Stevens et al, 1978Stevens et al, , 1979Kowalczyk, 1979;Pierson and Russell, 1979;Countess et al, 1980;Lewis and Macias, 1980;Ondov et al, 1981;Shah et al, 1981). We first adjust the Tuscarora data to a traffic con~position of 5"/, diesels to be more representative of the United States generally.…”