Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Chemistry recommendations

The remainder of the chapter is concerned with increasingly specialized developments in the study of gas adsorption, and before proceeding to this material, it seems desirable to consider briefly some of the experimental techniques that are important in obtaining gas adsorption data. See Ref. 22 for a review of traditional methods, and Ref 23 for lUPAC (International Union of Pure and Applied Chemistry) recommendations for symbols and definitions. [Pg.615]

As a general rule, adsorbates above their critical temperatures do not give multilayer type isotherms. In such a situation, a porous absorbent behaves like any other, unless the pores are of molecular size, and at this point the distinction between adsorption and absorption dims. Below the critical temperature, multilayer formation is possible and capillary condensation can occur. These two aspects of the behavior of porous solids are discussed briefly in this section. Some lUPAC (International Union of Pure and Applied Chemistry) recommendations for the characterization of porous solids are given in Ref. 178. [Pg.662]

As shown in Figure 4.12c, the limit of identification is selected such that there is an equal probability of type 1 and type 2 errors. The American Chemical Society s Committee on Environmental Analytical Chemistry recommends the limit of quantitation, (Sa)loq> which is defined as ... [Pg.96]

Recommendations were made to begin treatment with corrosion inhibitors and to make system operation changes to reduce grease and oil fouling. Other water chemistry recommendations involved reducing the amount of aggressive anion in solution and pursuing biocidal treatment. [Pg.59]

According to published International Union of Pure and Applied Chemistry recommendations the terms hydrophobicity and lipophilicity are best described as follows [79] ... [Pg.35]

Horwitz W (1990) IUPAC, Analytical Chemistry Division, Commission on Analytical Nomenclature Nomenclature for sampling in analytical chemistry (Recommendations 1990), Pure Appl Chem 62 1193... [Pg.66]

Enzyme preparations chemistry recommendations for food additive and GRAS affirmation petitions (http //vm.cfsan.fda.gov/ dms/opa-cg7.html)... [Pg.54]

Leigh, G.J. (ed.) (1990) Nomenclature of Inorganic Chemistry. Recommendations 1990, Issued by the Commission on the Nomenclature of Inorganic Chemistry (Blackwell Scientific Publications, Oxford). [Pg.215]

The International Union of Pure and Applied Chemistry recommends that the definition should now be based on the ratio of the radiant power of incident radiation (Pq) to the radiant power of transmitted radiation (P). Thus, A = log(Po/P) = log T. In solution, Pq would refer to the radiant power of light transmitted through the reference sample. T is referred to as the transmittance. If natural logarithms are used, the quantity, symbolized by P, is referred to as the Napierian absorbance. Thus, B = ln(Po/P). The definition assumes that light reflection and light scattering are negligible. If not, the appropriate term for log(Po/P) is attenuance. See Beer-Lambert Law Absorption Coefficient Absorption Spectroscopy... [Pg.3]

The material discussed here is based primarily on A Guide to lUPAC Nomenclature of Organic Chemistry, Recommendations 1993, issued by CNOC, on the Nomenclature of Inorganic Chemistry, Recommendations 1990 (the Red Book), issued by CNIC, on the Compendium of Macromolecular Chemistry (the Purple Book), issued in 1991 by COMN, and on Biochemical Nomenclature and Related Documents, 2nd Edition 1992 (the White Book), issued by lUBMB. [Pg.2]

As this book was going to press the International Uraon of Pure and Applied Chemistry recommended that (he word proton be used only when the H isotope was intended, and that ihc more general Irydron be used everywhere dsc, as in hydron donor. See Appendix t. Section 8. We have not attempted a) the last minute to change ail of these "protons to hydrons Like the SI system of units, (his change, if accepted by the world s chemsts. wtl take some lime, and the term "proton donor wil not soon disappear. [Pg.171]

Recommendations on additional aspects of macromolecular nomenclature such as that of regular double-strand (ladder and spiro) and irregular single-strand organic polymers continue to be published in Pure and Applied Chemistry. Recommendations on naming nonlinear polymers and polymer assemblies (networks, blends, complexes, etc) are expected to be issued in the near future. [Pg.1091]

Block BP, Powell WH, Fernelius WC (1990) Nomenclature of Inorganic Chemistry-Recommendations. Am Chem Soc, Washington, DC... [Pg.181]

To simplify the nomenclature, the International Union of Pure and Applied Chemistry recommended abbreviations for the oligosaccharide chains of GSLs [9], The neutral core (root) structures, their symbols, and commonly used abbreviations are shown in Table 12.1. The name of a particular GSL is composed of (root name) (root size) osylceramide. Thus, the sixth structure in Table 12.1, if linked to ceramide, is named globotetraosylceramide, which could be abbreviated as Gb4Cer (the subscript 4 refers to the tetrasaccharide core). [Pg.295]

G.J. Leigh, Nomenclature of Inorganic Chemistry Recommendations 1990, Blackwell Scientific Publications, London, 174. [Pg.114]

The Journal of Combinatorial Chemistry recommends the use of ChemSet notation, in which a structure number is followed by the reagent sets associated with it. The structure number is typeset in bold, and the reagent sets are set in italics and enclosed in curly brackets. [Pg.246]

Hypho- and klado- structures appear to be known only as derivatives. Additional details on naming boron hydrides and related compounds can be found in the lUPAC publication, G. J. I-eigh, ed.. Nomenclature of Inorganic Chemistry Recommendations 1990, Blackwell Scientific Publications, Cambridge, MA, 1990, pp. 207-237. [Pg.574]

Nomendature of Inorganic Chemistry Recommendations 1990 Leigh, G. J., Ed. Blackwell Scientific Oxford, England, 1990, International Union of Pure and Applied Chemistry. Reproduced with permission. [Pg.506]

The Joint Committee" of the Pharmaceutical Society and the Society for Analytical Chemistry recommended a gas chromatographic method for the determination of ephedrine in tablets, elixir and nasal drops, using phenmetrazine as an internal standard. Ephedrine was extracted... [Pg.105]


See other pages where Chemistry recommendations is mentioned: [Pg.162]    [Pg.57]    [Pg.502]    [Pg.279]    [Pg.335]    [Pg.124]    [Pg.204]    [Pg.517]    [Pg.112]    [Pg.388]    [Pg.168]    [Pg.462]    [Pg.280]    [Pg.33]    [Pg.517]    [Pg.304]    [Pg.79]    [Pg.506]    [Pg.879]   
See also in sourсe #XX -- [ Pg.105 , Pg.265 ]




SEARCH



© 2024 chempedia.info