Volume 30, Issue 1, January 2001
Index of content:
30(2001); http://dx.doi.org/10.1063/1.1354207View Description Hide Description
This volume reviews the metal and ammonium formate solubility data published up to 1995. So far as the editors are aware, all the solubility data published during this period have been reviewed. Preference has been given to data published in numerical form. Data that appeared only in graphical form may not appear in this volume. In each section the metal atoms are arranged in the order (group) in which they appear in the Periodic Table. Metal formates are crystalline solids having some interesting chemical and physical properties. Several of these salts are important because they have nonlinear optical properties. Specific examples are: (3), (4), and formates of Sc, Y and the rare earth elements having the general formula (where Y, La, Ce, Pr, Nd, Sm…Lu) and some double salts and mixed salts such as and Some metal formates have useful electric or magnetic characteristics. Thus, has ferroelectric properties, is ferromagnetic, is antiferromagnetic, is paramagnetic, and the formates of Ca, Cd, and Sr have elastic and thermoplastic properties. Bivalent metal formates could be used as precursors for the production of catalysts because they show excellent miscibility in the solid state, i.e., they form mixed crystals that dissociate at relatively low temperatures (about 300 °C) to form the respective oxides and mixed oxides. There are also additional smaller-scale uses of metal formates. The wide interest in the applications and uses of metal formates will lead to an interest in seeking methods for the preparation of these materials. Solubility data for the metal formates will be helpful in devising the methods of preparation. Therefore, this volume has been prepared to present and evaluate solubility data for the binary, ternary and multicomponent systems containing metal formates in aqueous and in nonaqueous solutions.
30(2001); http://dx.doi.org/10.1063/1.1364519View Description Hide Description
The available data for determining the thermochemical parameters for and has been assembled. With this information, the thermochemical functions for and have been calculated as ideal gases in the harmonic oscillator approximation. These results are presented in the format of the NIST–JANAF Thermochemical Tables, as well as in the format of the CHEMKIN ThermochemicalDatabase. Using the vapor pressure data, the thermochemical parameters for in the solid phase and in both the solid and liquid phases have been calculated. These results are compared with available experimental and calculated data. The earlier results are in good agreement with our results. However, the results were not previously available in the JANAF format, and the results for both species are on a much firmer footing with the new experimental data we used. The anharmonicity constants measured earlier for permitted a determination of the effect of anharmonicity on the thermochemicalproperties for this species. For this species at least, the harmonic oscillator approximation is very good. Differences between the harmonic and anharmonic calculations were only significant at temperatures above 1000 K.
Factors Affecting Sorption of Organic Compounds in Natural Sorbent/Water Systems and Sorption Coefficients for Selected Pollutants. A Review30(2001); http://dx.doi.org/10.1063/1.1347984View Description Hide Description
Factors affecting sorption of organic pollutants by natural sorbents (soils, sediments, clays, humic materials, and dissolved organic matters) and sorption coefficients for selected pollutants are reviewed on the basis of the literature results and interpretations; with 681 references examined. The most significant aspects of the sorption process are discussed: sorption isotherms and sorption kinetics; effects of sorbent physico-chemical characteristics (pH, cation exchange capacity, ionic strength, surface area, etc.); effect of the temperature; sorption of volatile compounds; effect of the presence of a cosolvent; association with dissolved organic matter; effect of the sorbent concentration; “hysteresis” or nonsingularity in the sorption–desorption process, and its implications in the transport of these contaminants through soil columns. The experimental and prediction methods adopted for the determination and estimation of the sorption coefficients are also described. Literature sorption coefficients for selected hydrophobic, polar, and ionizable compounds are collected. The compounds taken into consideration belong to the following classes: monoaromatic hydrocarbons, polycyclic aromatic hydrocarbons, chlorinated alkyl and aryl compounds, phenol and chlorinated phenols, polychlorobiphenyls, dioxins, and pesticides. The respective sorption coefficients and organic carbon-referenced sorption coefficients are tabulated together with the most relevant characteristics of the respective sorbent, the measurementtemperature, and the experimental methods. The values are averaged and compared with other experimental and estimated literature data. Differences of sorption coefficients on soils and sediments and effect of pH on sorption coefficients for ionizable compounds are evidentiated.
Erratum: “Heat Capacity of Liquids. Critical Review and Recommended Values. Volumes I and II.” [J. Phys. Chem. Ref. Data, Monograph No. 6 (1996)]30(2001); http://dx.doi.org/10.1063/1.1358838View Description Hide Description
The errata are arranged in the format shown below and are listed as found according to successive pages in the 1996 Monograph No.6. After the page number for specific erratum, there is information provided which indicates the location on the specific erratum on a given page, such as: number and name of table, reference squib, compound name or other pertinent information. If a given error occurs on more than one page, the page numbers are listed for occurrence of each error in a block of consecutive lines. Next, the erratum appears as it is found in the publication; thereafter one finds the correction. The last line offers a comment or explanation about the erratum.