Instrumental analysis for trace elements present in Chicago area surface air
| Autor: | D. M. Hattori, J. R. Kline, S.S. Brar, D. M. Nelson, Gustafson Pf, Carl E. Moore, Eugene L. Kanabrocki |
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| Rok vydání: | 1970 |
| Předmět: |
inorganic chemicals
Atmospheric Science Trace Amounts Analytical chemistry Soil Science Mineralogy chemistry.chemical_element Vanadium Aquatic Science Oceanography Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) Lanthanum Scandium Earth-Surface Processes Water Science and Technology Bromine Ecology Paleontology Forestry Alkali metal Mercury (element) Cerium Geophysics chemistry Space and Planetary Science |
| Zdroj: | Journal of Geophysical Research. 75:2939-2945 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/jc075i015p02939 |
| Popis: | On April 4, 1968, surface air particulates were collected on cellulose fiber filters simultaneously at twenty-two different locations throughout the Chicago metropolitan area. A 1-cm2 portion of each filter was irradiated with thermal neutrons in Argonne National Laboratory's CP-5 research reactor. The neutron-induced nuclides were analyzed by γ-ray spectrometry with 10.2 cm × 10.2 cm (4 in. × 4 in.) and 7.6 cm × 7.6 cm (3 in. × 3 in.) cylindrical NaI(Tl) crystals and a 400-channel analyzer. By varying the neutron flux and the time of irradiation, we were able to detect by purely instrumental means twenty trace elements in surface air. The following elements, listed in decreasing order of concentration, were present: iron, chlorine, aluminum, zinc, manganese, sodium, bromine, vanadium, chromium, antimony, mercury, selenium, cerium, silver, cobalt, lanthanum, scandium, cesium, and europium. The average concentrations varied from 2400 to 0.12 ng/m3 air. Calcium concentrations in air were not quantitated. |
| Databáze: | OpenAIRE |
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