title: Electron microprobe calibration for measurement of intracellular water.
abstract: A set of six albumin standards has been prepared to contain tissue solids fractions ranging from approximately 10 to 38% solids. Samples of each different standard were quick frozen in cooled propane, freeze-dried at low temperature and embedded in EPON 826 containing dibromoacetophenone. Electron microprobe measurement of reduction of Br L alpha signal was plotted against tissue water fraction to provide a calibration for tissue water measurement in biological soft tissue. The relationship between electron microprobe measurement of Br L alpha and tissue water fraction was linear with correlation coefficient .991. Using the calibration established with this work, uncertainty of measurement of tissue water fraction in a tissue sample that is 80% water will be approximately 5%.
mesh_terms: D000818:Animals; D001826:Body Fluids / Q000032:analysis*; D001834:Body Water / Q000032:analysis*; D002417:Cattle; D003201:Computers; D004577:Electron Probe Microanalysis / Q000379:methods; D005612:Freeze Drying; D007424:Intracellular Fluid / Q000032:analysis*; D012710:Serum Albumin, Bovine; D013696:Temperature
chemical_list: D012710:Serum Albumin, Bovine