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Method 100.2. Determination of Asbestos Structures over 10 micrometers in Length in Drinking Water.

PB94201902

Publication Date	1994
Personal Author	Brackett, K. A.; Clark, P. J.; Millette, J. R.
Page Count	28
Abstract	Water is collected in a polyethylene or glass container and shipped to the laboratory. Known aliquots of the sample are filtered through a 0.1 to 0.22 micrometer pore mixed cellulose ester (MCE). A carbon extraction replica is prepared from a portion of the filter and is examined in the TEM at a magnification of 10,000 to 20,000X. Asbestos structures are identified by morphology, selected area electron diffraction (SAED) and energy dispersive x-ray analysis (EDXA). Structures are classified according to the counting rules specified in the Chatfield polycarbonate filter protocol (1). Only asbestos structures greater than 10 micrometers in length are counted.
Keywords	Drinking water Asbestos Water pollution detection Water analysis Test methods Quantitative analysis Fluid filters Membranes Standards Esters Mixtures Water pollution sampling Electron microscopy Quality control US EPA EPA Method 100.2
Source Agency	Environmental Protection Agency Office of Research and Development
NTIS Subject Category	68D - Water Pollution & Control 48F - Geology & Geophysics 99A - Analytical Chemistry 50B - Civil Engineering
Corporate Authors	Environmental Monitoring Systems Lab., Cincinnati, OH.
Document Type	Technical Report
NTIS Issue Number	199423

Method 100.2. Determination of Asbestos Structures over 10 micrometers in Length in Drinking Water.

Method 100.2. Determination of Asbestos Structures over 10 micrometers in Length in Drinking Water.
PB94201902

Publication Date	1994
Personal Author	Brackett, K. A.; Clark, P. J.; Millette, J. R.
Page Count	28
Abstract	Water is collected in a polyethylene or glass container and shipped to the laboratory. Known aliquots of the sample are filtered through a 0.1 to 0.22 micrometer pore mixed cellulose ester (MCE). A carbon extraction replica is prepared from a portion of the filter and is examined in the TEM at a magnification of 10,000 to 20,000X. Asbestos structures are identified by morphology, selected area electron diffraction (SAED) and energy dispersive x-ray analysis (EDXA). Structures are classified according to the counting rules specified in the Chatfield polycarbonate filter protocol (1). Only asbestos structures greater than 10 micrometers in length are counted.
Keywords	Drinking water Asbestos Water pollution detection Water analysis Test methods Quantitative analysis Fluid filters Membranes Standards Esters Mixtures Water pollution sampling Electron microscopy Quality control US EPA EPA Method 100.2
Source Agency	Environmental Protection Agency Office of Research and Development
NTIS Subject Category	68D - Water Pollution & Control 48F - Geology & Geophysics 99A - Analytical Chemistry 50B - Civil Engineering
Corporate Authors	Environmental Monitoring Systems Lab., Cincinnati, OH.
Document Type	Technical Report
NTIS Issue Number	199423