Particulate Matter (PM) Exposure Assessment—Horizontal and Vertical PM Profiles in Relation to Agricultural Activities and Environmental Factors in Farm Fields.
Reports profiling airborne particulate matter (PM) in farm fields, especially during a Class B biosolids land-injection process, are scarce. Thus, this study characterized PM in such a farm field located in northwest Ohio. For comparison, a control farm field with no biosolids application history wa...
| Publicado en: | Journal of Occupational & Environmental Hygiene Vol. 9; no. 8; pp. 502 - 517 |
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| Autores principales: | , , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Aug2012
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=77495234&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 77495234 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 15459624 V1L jtl: Journal of Occupational & Environmental Hygiene issn: 15459624 maglogo: Y pubinfo: dt: Aug2012 vid: 9 iid: 8 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 77495234 104470610 104470610 10.1080/15459624.2012.695216 77495234 ppf: 502 ppct: 15 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Particulate Matter (PM) Exposure Assessment—Horizontal and Vertical PM Profiles in Relation to Agricultural Activities and Environmental Factors in Farm Fields. aug: au: Akbar-Khanzadeh, Farhang Ames, April Bisesi, Michael Milz, Sheryl Czajkowski, Kevin Kumar, Ashok affil: University of Toledo, Department of Public Health & Preventive Medicine, Toledo, Ohio sug: subj: Agriculture Ohio Particulate Matter Environmental Exposure Ohio Human Air Pollutants Analysis Data Analysis Software Analysis of Variance T-Tests Weather Occupational Exposure Funding Source ab: Reports profiling airborne particulate matter (PM) in farm fields, especially during a Class B biosolids land-injection process, are scarce. Thus, this study characterized PM in such a farm field located in northwest Ohio. For comparison, a control farm field with no biosolids application history was also monitored. During 11 days of varied agricultural activities, the concentrations of particle mass and number (count) and also metal content were monitored in the study field, and their interactions with environmental factors were examined. The monitoring was performed across the farm field at four heights of 0.5, 1.5, 2.5, and 3.5 m from the ground. The overall mean (SD) concentration (μg/m3) of respirable suspended particulate matter (RPM) was 30.8 (23.1) with means ranging from 15.9 (3.80) during post-tilling Event 1, 19.9 (12.4) during biosolids application to 56.1 (11.7) during post-harvest (including baling) activity. The maximum concentration of RPM (μg/m3) was 43 during biosolids application, 90 during post-harvest, and 183 during post-tilling Event 2 activities. Overall, 93.7% (8.98%) of the total suspended particulate matter (TPM) was respirable. The levels of RPM significantly (p < 0.01) correlated with TPM and particle counts of ultrafine particles (UFP) and 0.3 μm particle size. Ambient temperature showed no effect, whereas wind speed and relative humidity had an inverse effect on RPM concentration. Particle concentrations changed minimally during each set of monitoring across the field, except during major activities or sudden weather changes. For particles with sizes of 2, 5, and 10 μm, the counts decreased with increasing height from the ground and were significantly (p < 0.05) higher at 0.5 m than at other heights. The levels of nine metals within particles monitored were well below current recommended occupational exposure criteria. These results suggest that injection of the biosolids into agricultural land provides significant protection against exposure to biosolids particles. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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