Scanning electron microscopy was used to study relative pesticide distribution in two-layer microporous fabrics. Backscattered electron imaging and x-ray microanalysis provided a better understanding of pesticide deposition within a bicomponent micro porous membrane. An emulsifiable concentrate of diazinon was applied to three two- layer microporous fabrics; the samples were labeled with osmium tetroxide and then analyzed qualitatively. Results show that penetration of the pesticide through the microporous membrane is not uniform.
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References
1.
Branson, D.H., and Rajadhyaksha, S. , Distribution of Malathion on Goretex® Fabrics Before and After Sunlight Exposure and Laundering as Determined by Electron Microscopy, presented at Performance of Protective Clothing, Second Symposium, ASTM STP 989, S. Z. Mansdoa, R. Sager, and A. P. Nielsen, Eds., American Society for Testing and Materials, Philadelphia, PA, 1988, pp. 651-659.
2.
Hess, F.D., Falk, R.H., and Bayer, D.E., TheInfluence of Specimen Topography on X-ray Microanalysis Element Mapping, Am. J. Bot.62, 246-253 (1975).
3.
Obendorf, S.K. , and Solbrig, C.M., Distribution of the Pesticides Malathion and Methyl Parathion on Cotton/ Polyester Fabrics Before and After Laundering as Determined by Electron Microscopy, presented at Performance of Protective Clothing, ASTM-STP 900, R. L. Barker and C. L. Coletta, Eds., American Society for Testing Materials, Philadelphia, PA, 1986, pp. 187-204.
4.
Postek, M.T., Howard, K.S., Johnson, A.H., and McMichael, A.L., Scanning Electron Microscopy, Ladd Research Industries , 1980.
5.
Solbrig, C.M. , and Obendorf, S.K., Distribution of Residual Pesticide Within Textile Structures as Determined by Electron Microscopy, Textile Res. J.55, 540-546 (1985).
6.
Shaw, A., NewTechnique to Label Pesticide-Contaminated Fabrics for SEM Analysis, Textile Res. J.61, 375-381 (1991).
7.
Shaw, A., and Hill, K.R., Variability in Sorption of Diazinon through Microporus Fabrics, Bull. Environ. Contam. Toxicol.45, 500-506 (1990).
8.
Uyenco, E.F.R. , and Obendorf, S.K., Effect of Functional Finishes on Retention of the Pesticide Malathion on Polyester/Cotton Fabrics, in "AATCC Book of Papers, International Conference and Exhibition ," Chicago, IL, 1984.
