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| Web URL(s): | http://archive.lib.msu.edu/tic/rpr/1996/Environmental/47085,%20U%20Mass,%20Clark.PDF
Last checked: 11/05/2013
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| Publication Type:
| Report |
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| Material Type: | Manuscript |
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| Monographic Author(s): | Clark, J. M.; Roy, G. R.; Curtis, A.; Doherty, J. D.; Martin, G.; Cooper, R. J. |
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| Author Affiliation: | Clark: Ph.D. and Principal Investigator; Roy: M.S. Candidate; Curtis and Doherty: Pesticide Analyst; Martin: Undergraduate Work-Study Student and Summer Part-Time Employee, Massachusetts Pesticide Analytical Laboratory, Department of Entomology, University of Massachusetts, Amherst, MA; and Cooper: Department of Crop Science, North Carolina State University, Raleigh, NC |
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| Monograph Title: | Evaluation of Management Factors Affecting Volatile and Dislodgeable Foliar Residues of Turfgrass Pesticides: [1996 Annual Research Report], 1996. |
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| Publishing Information: | Amherst, Massachusetts: Massachusetts Pesticide Anlaytical Laboratory, Department of Entomology, University of Massachusetts |
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| # of Pages: | 25 |
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| Collation: | 11, [4], 12, [2], 13-15, [4] pp. |
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| Abstract/Contents: | "Accomplishments: This year, we have completed all the method development for the determination of 13 turfgrass pesticides in three separate multiresidue analyses. All experiments and field samples have been collected. A total of 13 separate experiments have been conducted and a total of 585 samples have been collected. Residue analysis of this sample set is 80% completed. We have determined that the critical vapor pressure below which no turfgrass pesticide will volatilize to the extent that it results in an inhalation HQ greater than 1.0 to be between 3.3 x 10-6 to 5.6 x 10-5 mm Hg (Objective 1.1). We have determined the critical OPP RfD above which no turfgrass pesticide will result in a dermal HQ greater than 1.0 to be between 0.005 and 0.013 (Objective 1.3). We have collected appropriate weather data with this residue data set and have met with Dr. D. Haith, Dept. Agric. Eng., Cornell University, who has agreed to cooperate with us by modeling this data into a temperature dependent algorithm that will determine the critical surface temperature below which no volatile turfgrass pesticide will result in an inhalation HQ greater than 1.0 (Objective 1.2). This model will be available Spring/Summer 1997. Two applications of the spreader/stricker adjuvant, Exhalt 800, have been made to determine if such ammedments [amendments] can attenuate the exposure levels determined previously for the organophosphate insecticides. These data are currently being analyzed (residue data set 50% completed). In summary, we have shown that organophosphate insecticides that possess high toxicity and volatility may result in exposure situations that cannot be deemed completely safe as judged by the USEPA Hazard Quotient determination. This assessment, however, must be viewed in terms of the assumptions that were used in making these estimations. In all instances, maximum pesticide concentrations were used for the entire 4 hour exposure period, maximum pesticide applications were used, and dermal transfer coefficients and dermal permeability factors were taken from non-turfgrass situations that are likely to exceed those that would take place on a golf course. Because of this, we view such estimates as the worst case scenarios. In order to more accurately predict the health implications of pesticide exposure to golfers, a relevant dosimetry evaluation of golfers, playing golf on a golf course, needs to be carried out. With more accurate exposure estimates, it is our belief that the exposure levels reported in this report will be found to be in excess of the true exposure to pesticides on a golf course." |
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| Language: | English |
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| References: | 8 |
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| See Also: | See also related summary article "Evaluation of management factors affecting volatile loss and dislogeable foliar residues" 1996 Turfgrass and Environmental Research Summary, 1996, pp. 60-63, R=47085. R=47085 |
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| Note: | Also appears as pp. 00054-00078 in the USGA Turfgrass Research Committee Reporting Binders for 1996.
"USGA - Green Section Research"
"Annual Report: (11/1/95 - 10/31/96)"
Figures
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http://archive.lib.msu.edu/tic/rpr/1996/Environmental/47085,%20U%20Mass,%20Clark.PDF
Last checked: 11/05/2013
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