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Journal of Thermal Analysis and Calorimetry
Authors: Lidiane Pinto Correia, Elisana Afonso de Moura, Hallisson Meneses Pires, and Rui Oliveira Macêdo

Introduction Water is a fundamental element of life. Its multiple uses are indispensable for a wide spectrum of human activities. The industrial and demographic expansion observed in recent decades has resulted in impairment of

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frequency to investigate food components as well as to detect food adulteration. Butter, due to its relatively high price, is frequently adulterated either with foreign fats (of animal or vegetable origin) or water. The name “butter” is reserved for a

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carbon and water is determined, the contribution can not be calculated per mole but per gram for each of the components of the binary system. In this article the authors made this approximation, calculated the enthalpy changes listed above, and studied

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on pure ILs and their mixtures with common organic solvents [ 4 – 6 ], most of them concerning imidazolium-based ILs. Some works have dealt with the thermodynamic properties of (RTILs + water) binary systems [ 7 – 9 ], and a growing number of

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Aqueous nanostructures in water induced by electromagnetic fields emitted by EDS

A conductometric study of fullerene and carbon nanotube EDS

Journal of Thermal Analysis and Calorimetry
Authors: V. Elia, L. A. Marrari, and E. Napoli

Introduction “No one really understands water. It is embarrassing to admit it, but the stuff that covers two-thirds of our planet is still a mystery. Worse, the more we look, the more the problems accumulate: new techniques

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for binary mixtures of (TBP + methanol/ethanol) have been reported previously [ 13 ] to understand the molecular interactions existing in liquid mixtures. As a part of the systematic study, excess molar enthalpies for ternary mixtures of (TBP + water

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. 1999 107 907 O.A.H. Jones, N. Voulvoulis , and J.N. Lester , Water Res. 36 (2002) 5013

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Treatment of water-induced curvature of the DSC heat flow rate signal

Applied to fractionated nucleation of polypropylene dispersed in water

Journal of Thermal Analysis and Calorimetry
Authors: Julen Ibarretxe, Gabriël Groeninckx, and Vincent B. F. Mathot

and the effects of confinement on the crystallization process [e.g., 9 , 11 , 18 – 20 ]. Homogeneous nucleation in water-borne dispersions of polymers In this study, water was used as the dispersion matrix for a maleic

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Abstract  

During the last years, the demand for biofuels has increased significantly. In Brazil, a production of 1 billion liters of biodiesel was produced by the end of 2007, due to its obligatory use in the composition of the diesel for vehicle use. In this production, a hundred thousand tons of glycerol are produced as by-product, for which alternative uses are needed. As glycerol has already been studied by other conventional characterization methods in the past, thermal analysis has been used mostly for characterization of sub ambient temperature properties of glycerol. In this paper, thermogravimetry (TG), derivative thermogravimetry (DTG) and differential thermal analysis (DTA) were used for its thermal characterization above room temperature. Thermal stability was determined from experimental data, which show that even in air, only a very small part of the volatilized glycerol is burned out. A thermogravimetric quantitative method was developed to determinate the water content of glycerol–water mixtures, which also was used to quantify the water impurity in pro-analysis samples of glycerol, showing compatible results with those obtained by Karl Fischer method.

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Journal of Radioanalytical and Nuclear Chemistry
Authors: Stefan Bister, Florian Koenn, Maruta Bunka, Jonny Birkhan, Torben Lüllau, Beate Riebe, and Rolf Michel

Abstract  

The Mulde River is a left side tributary of the Elbe River and mainly situated in Saxony. The river system consists of the Freiberger Mulde River and the Zwickauer Mulde River, which merge to form the Vereinigte Mulde River. The Zwickauer Mulde River drains the former uranium mining and milling areas in Saxony. This research project was established to quantify the long-term effect of the former uranium mining and milling activities by investigating the content of uranium of the water of the Mulde River. The activity concentration of uranium in samples from the Zwickauer Mulde River is still high compared with the natural background. The values measured in the water of the Vereinigte Mulde River are also elevated, but to a lesser extent due to the dilution effect caused by the merging with the uncontaminated Freiberger Mulde River. Furthermore, the level of contamination of the river water decreased by at least a factor of three as compared to the early 1990s.

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