caa a22 4500 465747078 CHVBK 20180323111823.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00322256 doi (NATIONALLICENCE)springer-10.1007/BF00322256 Kratochvil Byron Department of Chemistry, University of Alberta, T6G 2G2, Edmonton, Alberta, Canada aut Sampling for microanalysis: Theories and strategies [Elektronische Daten] [Byron Kratochvil] Summary: Analysts should consider more than simply the determination of the composition of the test portion provided; they should also assess the degree to which the test portion represents the population under evaluation. To do this requires an understanding of both sampling theory and of practical sampling strategies. An acceptable sampling program should include an adequate statistical design, proper sample collection and transport to the analytical laboratory, and proper training of those performing the sampling. Statistical theories and relations that can serve as aids for more efficient sampling include those of Ingamells and Switzer, Gy, Benedetti-Pichler, and others; most of these apply to particulate mixtures and are based on Gaussian distributions. Other treatments of sampling include geostatistical procedures such as kreiging, and the use of fractals. Many environmental and industrial monitoring and quality control operations now in use are based on sampling protocols arrived at by ad hoc procedures. The quality of trace analytical data can be improved and costs of analyses decreased by developing better sampling plans. Springer-Verlag, 1990 Fresenius' Journal of Analytical Chemistry Springer-Verlag 337/7(1990-01-01), 808-811 0937-0633 337:7<808 1990 337 216 https://doi.org/10.1007/BF00322256 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00322256 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Kratochvil Byron Department of Chemistry, University of Alberta, T6G 2G2, Edmonton, Alberta, Canada aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 337/7(1990-01-01), 808-811 0937-0633 337:7<808 1990 337 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer