Assembly and Use of Permanent Secondary Standards for Calibration of Infrared Spectrophotometer for Determination of Isotopic Purity of Nuclear Grade Heavy Water

摘要

Infrared (IR) spectrophotometer like any other instrument for quantitative or qualitative measurement of a property of a sample requires calibration or standardization with respect to a set of samples of known values of the parameter. For heavy water application, standards made out of nuclear grade heavy water are to be used. Since heavy water is hygroscope in nature, standards assembled using wire, mesh or gas plate of known transmittance is found as a better alternate for analyzing heavy water, especially on routine basis. The paper describes this methodology.