Benedetti-Pichler

This table lists values of /3, the cubical coefficient of thermal expansion, taken from Essentials of Quantitative Analysis, by Benedetti-Pichler, and from various other sources. The value of /3 represents the relative increases in volume for a change in temperature of 1°C at temperatures in the vicinity of 25°C, and is equal to 3 a, where a is the linear coefficient of thermal expansion. Data are given for the types of glass from which volumetic apparatus is most commonly made, and also for some other materials which have been or may be used in the fabrication of apparatus employed in analytical work. 

A. A. Benedetti-Pichler. Identification of Materials. Springer-Verli, New York, 1964. 

Benedetti-Pichler, A. in "Physical Methods of Chemical Analysis" Berl, W.M., Ed. Academic Press New York,... 

The foundations for sampling theory, seen from the point of view of the object, have been laid by Benedetti-Pichler, Visman and Their starting point... 

Britton, R. S., Benedetti-Pichler, A. A., Harvard J. Asiatic Studies (1937)... 

Benedetti-Pichler, A. A. Beitrage zur Gewichtsanalyse mit der Mikrowaage von Kuhlmann. Mikrochem. (Pregl-Festschrift) 1929, 6. 

Benedetti-Pichler, A. A. Leitgedanken zur Ausarbeitung von Mikromethoden. Mikrochim. Acta 36/37, 38 (1951). 

Benedetti-Pichler, A. A. Theory and Principles of Sampling for Chemical Analysis. In Ed. W. G. Berl, Physical Methods in Chemical Analysis, Vol. III. New York Academic Press 1956. 

Malissa, H., u. A. A. Benedetti-Pichler Anorganische qualitative Mikroanalyse. Monographien aus dem Gebiet der qualitativcn Mikroanalyse, Band I. Wien Springer 1958. 

Benedetti-Pichler, A. A. Waagen und Wagung. In F. Hccht u. K. Zacherl, Handbuch der mikrochemischen Methoden, Bd. I, Teil 2. Wien Springer 1959. 

Fig. 4-3. Relationship between the minimum sample weight required and the composition of the two kinds of particle in the bulk for different analyte concentrations (0, 1, 5, 9%) according to BENEDETTI-PICHLER [1956], (a) Relative standard deviation srei = 0.1%, (b) relative standard deviation srei = 1.0%...

His experience in mechanistic studies was most valuable in critical evaluation of numerous mechanisms in the preparation of the largest existing collection of electrochemical data [ii, iii], Meites was an excellent teacher of analytical chemistry [iv, v] and an editor of the Handbook of Analytical Chemistry [vi], containing numerous electrochemical data, such as redox potentials, pKa values, stability constants, etc. Author of 204 publications, he was the founding editor of Critical Reviews in Analytical Chemistry and served on the commi-sion of IUPAC dealing with electroanalytical chemistry. He received the Benedetti-Pichler Award (1983) for his achievements in analytical chemistry. 

For a detailed account, see E. M. Chamot and C. W. Mason Handbook of Chemical Microscopy, Volume I (1938) and Volume II (1940) (J. Wiley Chapman and Hall) also A. A. Benedetti-Pichler Introduction to the Microtechnique of Inorganic Analysis (1942) (J. Wiley Chapman and Hall.)... 

A. A. benedetti-pichler Essentials of Quantitative Analysis, Ronald, New York, 1956. 

More broadly, let P represent the average percentage of the component to be determined in the population, which is assumed to consist of uniform particles of two kinds A and B in the ratio />/( — p). The A particles have density di and contain / % of the component the B particles have density d2 and contain F2%< Th average density is d, and all particles have the same volume. Benedetti-Pichler showed that an error Anj in the number of units of A contained in a sample of n units causes an error in the percentage of the component, where AP is given by... 

Several burets have been developed where the flow from the tip is controlled by surfaee tension Schwarz (S6), Benedetti-Pichler (B2), Kirk (K3), and P car (PI). The main disadvantage is that delivery speed is very low due to a (necessarily) very narrow tip. Conway (C6) applies a small hydrostatic pressure to expel the solution from the cap-... 

Crystals can be dried in any of the usual types of apparatus, such as the Abderhalden drying pistol or the variant described by Smith,82 or on a Benedetti-Pichler drying block. However, simpler apparatus also suffices 100-ml or 250-ml wide-necked flasks with well-fitting ground glass joints can be used as, e.g., micro desiccators and a wide glass tube closed by a stopper and tap (Figure 18) can serve as a vacuum-desiccator that can be heated. 

Grube gives a method whereby potassium hexacyano-cobaltate(III) can be prepared from potassium cyanide and cobalt carbonate, with subsequent oxidation of cyano-cobaltate(II) to cyanocobaltate(III), and purified by repeated crystallization from water. The following method was first described by Zwenger and later by Benedetti-Pichler. It has the advantage over Grube s method that cobalt(II) cyanide is first precipitated and washed free... 

Benedetti-Pichler drew an analogy between the sampling from bulk materials and counting the ratio of white and red beans in a silo containing hundreds of metric tons of a mixture of these two kinds of beans. As counting all the beans in the silo would involve years of work, one would switch to a more realistic, but less precise approach take a sample from the silo and make the count for it. The sample size is determined by the precision desired and can be estimated by using the binomial distribution. A similar philosophy has been adopted in most modem theories for sampling from bulk materials. 

A. Benedetti-Pichler, Ed. Springer-Verlag Vienna, 1964, p. 61. Shugar, G. J. Chemical Technicians Ready Reference Handbook,... 

Schneider, F. L. In Qualitative Organic Microanalysis, Vol. II of Monographien aus dem Gebiete der qualitativen Mikroanalyse Benedetti-Pichler, A. A., Ed. Springer-Verlag Vienna, 1964. Shriner, R. L. Hermann, C.K.F. Morrill,T.C. Curtin, D.Y ... 

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