00000nam 2200000za 4500 9.841371 CaOODSP 20221107152054 cr ||||||||||| 170810s1970 oncad ob f000 0 eng d CaOODSP eng eng fre n-cn--- M34-20/119E-PDF M34-20/119 Lapointe, C. M. The measurement of the surface area of minerals with a modified Perkin-Elmer sorptometer [electronic resource] / C.M. Lapointe, Mineral Sciences Division. Ottawa : Queen's Printer, 1970. iv, 27 p. : charts, ill. Technical bulletin ; TB 119 Cover title. "April 1970." Digitized edition from print [produced by Natural Resources Canada]. Includes bibliographical references (p. 17). “The performance of a Model 212-D Perkin-Elmer Sorptometer has been studied for the measurement of surface areas in the range of specific surface areas between 200 cm2/g and 1000 cm2/g. It was found that, with some modifications to the instrument with regard to the transfer of the desorbed gas from the sample to the detector, the Sorptometer could be used for the surface area measurement of relatively large samples of mineral particles. This Bulletin describes a simplification of the Brunauer–Emmett–Teller (BET) method that can be used for the routine measurement of surface areas on samples of similar characteristics by the one-point determination. The method can be extended to a two-point or a three-point determination in order to obtain a conventional BET plot. A standard procedure is outlined for the calibration of the instrument, for the sample preparation, for the adsorption measurement, and for the calculation of the specific areas"--Abstract, p. i. Includes abstract in French. gccst Minerals gccst Measurement Canada. Natural Resources Canada. Canada. Mines Branch. Technical bulletin (Canada. Dept. of Energy, Mines and Resources. Mines Branch) TB 119 (CaOODSP)9.834857 PDF 2.79 MB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M34-20/M34-20-119-eng.pdf 300005