вход по аккаунту


Book Review Das Dithizon und seine Anwendung in der Mikro- und Spuren-analyse (Dithizone and Its Use in Micro- and Trace Anylysis) by G. Iwantscheff

код для вставкиСкачать
Das Dithizon und seine Anwendung in der Mikro- und Spurenanalysr (Dithizone and Its Use in Micro- and Trace Anyl~
Chemie GmbH., Weinysis) by G . I ~ v t r ~ t r s c h r f JVerlag
heim/Bergstr. (Germany) 1958. I st Ed. 272 p p . , 41 figures,
?4 tables. Cloth bound DM 29.80.
In modern chemical analysis, diphenylthiocarbazone has
become tlic most important single reagent for the isolation
and determination of traces of metals. Its Use requires careful
technique and extensive experience.Theauthor has thoroughly
checked laboratory directions culled from more than 500
publications and supplemented them with his own experience,
and has thus evolved a text that presents complete tested
directions to those who are unfamiliar with dithizone, while
those experienced i n its use will be stimulated to make more
extensive application of the reagent.
The text is divided into five sections. After discussing the
theoretical fundamentals, the author describes the general
technique of working with dithizone, devoting as much space
to a discussion of the requirements with respect to laboratory
facilities, equipment, and reagents as to description of the
actual methods o f separation and determination. The third
and longest chapter deals with the application of dithizone
to quantitative determinations of all the 18 metals involved
in selective reactions with this reagent. t o r each element the
chapter presents clearly t h e general basis for the respective
determination procedure, interfering factors, practical directions, and some typical appiications. The last two chapters
discuss the use of dithizone for qualitative analysis and some
specialized applications, e . g . a s an indicator for metals in
volumetric analysis.
The bibliography covers 523 references to the original
literature. Numerous diagrams and tables add to the value
of this excellent book which will quickly become indispensable
in every laboratory doing trace analysis.
C. Muhr [ N B 854/12 I € ]
Toxicology and Biochemistry of Aromatic Hydrocarbons, by
N.W . Gerurde. Elsevier Monographs on Toxic Agents.
Elsevier Publishing Co., Amsterdam-London-New YorkPrinceton, 1960. 1st edition, XlI, 320 pages, 89 figures,
63 tables. Price: hfl. 16. . (Price in the USA: $ 6.-).
This book, appearing in the series Elsevier Monographs
dealing wtth industrial toxicology, is by H . W. Gerurde, the
toxicologist of the medical research division of Esso whose
own research in this field (alkylbenzene metabolisms,
neurotoxic efrect of p-t.-butyltoluene, etc.) are well known.
On the basis of his own experiences the author is in a position
to critically evaluate the most recent (up to the end of 1959)
and sometimes quite inaccessible literature, e . g . on diphenyl,
cataract production by naphthalene, etc. Supported by 59
tables and 89 figures, formulae and sketches, truly everything
is mentioned that is important i n industrial toxicology of
aromatic hydrocarbons. After a general survey about their
chemistry, application, and biology, the 20 most important
mono-, di-. and polyalkyl derivatives of benzene, as well as
the di- and tricyclic aromatic hydrocarbons, are described
and their chemistry and physical chemistry, preparation, use,
and possible cxposure are described. Directions for the
analysis of alkqlbenrenes i n air and in the organism are given
with detailed descriptions of the conversion of various hydrocarbons in the organism. The importance of the excretion
of free and bound sulfate for the diagnosis of a benzene
exposure i n coniparison with othcr hydroxcarbons is shown.
The “official” MAC (maxirnum allowable concentration)
valucs are criticized and MAC values for substances which
have not yct been officially fixed, are proposed. [Regrettable
typographical error: Table 23 (page 81), the MAC value for
styrene is cquated with that fi3r p-t.-butqltoluene (10 ppm =
60 mg/m3), while i t is correctly given on page 140 as 100 ppm
420 mg/ln.’].
The polycyclic hydrocarbons and their carcinogenic representatives are discussed briefly, and the problem of carcinogenicity is stated clearly, in agrement with the excellent biography of Ecknrdt. The last chapter concerns mixtures of
aromatic hydrocarbons and their use as solvents, fuels, or
lubricants, with a short glossary of the terminology used
in petrochemistry.
The book is enjoyable and useful, written clearly and critically. It is recommended to all who deal experimentally with
the toxicology of aromatic hydrocarbons as well as for those
who have to give expert testimony, and who, unfortunately,
still frequently equate the effects of the “homologs of benH , Oettel
[ N B 808/3 ~ E J
zene” with those of benzene.
Landolt-Bornstein, Zahlenwerte und Funktionen aus Physik,
Chemie, Astronomie, Geophysik und Technik. Band IV:
Technik, Teil 3 : Elektrotechnik, Lichttechnik, Rontgentechnik(Lando1t-Bornstein, Numerical Data and Functions
pertaining to Physics, Chemistry, Astronomy, Geophysics,
and Technology. Volume IV: Technology, Part 3: Electrical, Light, and X-Ray Technology). Edited by E. Schmidt.
Springer-Verlag, Berlin-Gottingen-Heidelberg 1957. Sixth
edition, XV, 1076pp., 2117figures. Cloth bound D M 396.-.
This new edition ofVolume IV of theLandolt-Bornstein handbook covering the field of technology (“Numerical Data and
Functions Pertaining to Technology”) is certainly no mean
undertaking. Besides numerous organizational and other
problems, the selection of material presents an additional
I t has been impossible to avoid some overlapping between
the “technology” and “pure science” volumes. For example,
Figs. 35-37, pp. 25-26, Section 4414, of the present volume
are identical with Figs. 4-6 of Vol. 11, Part 6, pp. 92-93,
Section 27 114. Much that is given on pp. 332ff. of Vol. IV,
Part 1 is found in a more modern and complete form in
Vol. IV, Part 3, pp. 1045ff. Repetitions within Vol. 1V itself
ought to be eliminated; however, the overlapping with
sections of Vol. 11, Part 6 can only be avoided with difficulty
and this, inded, gives some indication of the principal difficulty of the task. IfVol. IV is intended for use on its own, i. e .
without having the other volumes available---andthat pertains
particularly to private purchasers -,the repetition is desirable.
If, however,it is expected that basic information on substances
under consideration should be principally sought first in
Vol. 11, then the repetitions should be eliminated, first, in
order to make the search for information as direct and
unambiguous as possible and, secondly, to avoid unnecessarily bulky and expensive volumes.
The volume under discussion deals with three important,
fields: electrical engineering, light technology, and X-ray
technology. The section on e l e c t r i c a l e n g i n e e r i n g lists
mainly data o n electrical conductivity of solids and liquids
( A . Schulze), thermoelements ( A . Schulze), transmission of
electricity through gases ( P . Schulz and H . Lau) insulating
materials ( W. Cluussnitzer), and magnetic materials ( R .
Ochsenfeld and K. H. Klitring). The section on electrical
conductivity naturally also lists the temperature coefficients
of resistance, the effect of mechanical treatment on conductivity, skin effects, and the resistances of thin layers and
semiconductors. Very extensive tables deal with the resistances of materials used in resistance thermometers (for ultrapure
Pt, values to six-places are given for every degree of temperature). The chapter on thermoelements contains data on
all the ordinary combinations of materials and the changes i n
thermoelectric force brought about by changes in ambient
pressure and by cold-forming. A 120 page section on the
transmission of electricity through gases deals with electrical
conductivity in gases and all related subjects [ionization and
excitation numbers, cathode drop, gradients of the positive
column, properties of plasma, breakdown voltages, including
those in inhomogenous fields (sphere-sphere, point-plate, and
Без категории
Размер файла
156 Кб
der, spuren, micro, dithizone, mikro, analyse, und, anwendungen, book, seine, trace, das, dithizon, iwantscheff, use, review, anylysis
Пожаловаться на содержимое документа