Rabano, Erlinda S. and Castillo, Norma T. and Torre, Kahirup J. and Solomon, Paul A. (1989) Speciation of Arsenic in Ambient Aerosols Collected in Los Angeles. Journal of the Air Pollution Control Association, 39 (1). pp. 76-80. ISSN 0002-2470. doi:10.1080/08940630.1989.10466511. https://resolver.caltech.edu/CaltechAUTHORS:20140915-105328300
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Abstract
First-time measurements of the potentially toxic inorganic species of arsenic (arsenite arid arsenate) have been obtained in fine (<2.5 µm AD) and coarse (>2.5 µm AD) atmospheric particles in the Los Angeles area. A recently developed method that includes procedures for sample collection, preparation, and analysis was used in this study. Size-fractlonated aerosol samples were collected with a high-volume dichotomous virtual impactor that employed polytetrafluoroethylene filters. Results were obtained for the recovery of arsenic standards added to unexposed and collected filters. Data from this study, indicated that the recently developed speciation method can be used to determine concentrations of As(lll) and As(V) In atmospheric particulate matter samples. Size-fractionated aerosol samples were collected in the city of Industry during January and February 1987. In most samples, As(lll) and As( V) were above the detection limit (approximately 1 ng m-3 of either species) in both aerosol size fractions. A greater portion (about 75 percent) of the two species were observed in the fine particles. The As(lll)/As(V) ratio for both particle sizes was close to 1 (I.e., an equal mixture of both species). Comparison of total suspended particulate arsenic measured by the speciation method to that measured by a routine California Air Resources Board-approved procedure showed good agreement (r = 0.94), indicating both methods were approximately equivalent for the collection and analysis of aerosol arsenic.
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| Additional Information: | © 1987 Air Pollution Control Association. Received: 27 Aug 1987. Accepted: 14 Nov 1988. Submitted to JAPCA August 1987. The authors would like to thank Pat Harrington of the California Air Resources Board for his valuable contribution in conducting the sampling phase of this project. The authors would also like to thank the U.S. Postal Service for allowing the aerosol sampling equipment to be sited on the roof of its building in the City of Industry. This work was fully supported by ARB. Disclaimer: This report has been reviewed by the staff of the California Air Resources Board and has been approved for publication. Approval does not signify that the contents necessarily reflect the views and policies of the Air Resources Board, nor. does mention of trade names or commercial products constitute endorsement or recommendation for use. | |||||||||
| Group: | Environmental Quality Laboratory | |||||||||
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| Issue or Number: | 1 | |||||||||
| DOI: | 10.1080/08940630.1989.10466511 | |||||||||
| Record Number: | CaltechAUTHORS:20140915-105328300 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140915-105328300 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 49701 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Ruth Sustaita | |||||||||
| Deposited On: | 15 Sep 2014 18:28 | |||||||||
| Last Modified: | 10 Nov 2021 18:47 |
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