Aqueous speciation of lead and tin chlorides in supercritical hydrothermal solutions.

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Thermodynamics and kinetics of ion speciation in supercritical aqueous solutions: a molecular-based study

Molecular simulation of infinitely dilute NaCl aqueous solutions are performed to study the NarCl ion Ž . pairing in a polarizable and a non-polarizable solvent at supercritical conditions. The simple point charge SPC , the Pettitt–Rossky and the Fumi–Tosi models for the water–water, the ion–water, and the ion–ion interactions are used in the determination of the degree of dissociation, its tem...

متن کامل

Simulation of supercritical water and of supercritical aqueous solutions

Molecular dynamics (MD) calculations have been performed to determine equilibrium structure and properties of systems modeling supercritical (SC) water and SC aqueous solutions at two states near the critical point using the simple point charge (SPC) potential model of Berendsen et al. for water. Both thermodynamic and dielectric properties from the simulations for pure water are accurate in co...

متن کامل

Speciation of Organometallic Compounds of Tin, Lead, and Mercury

This paper presents a discussion of fundamental problems of the speciation analytics of organometallic compounds occurring at low concentration levels in samples involving a complex matrix. It points out differences in analytical procedures for speciation analyses and those for determinations of total contents of a metal present in the studied sample in a number of different species.

متن کامل

Speciation in aqueous solutions of nitric acid.

In this study, speciation in aqueous solutions of nitric acid at 25 °C was assessed in two independent ways. First, Raman experiments were carried out and interpreted in terms of free nitrate ions, ion pairs and neutral HNO(3) molecules. In parallel, a model was developed to account for the formation of these two kinds of pairs. It was based on an extension of the binding mean spherical approxi...

متن کامل

Molecular Simulation and Theory of Reactions in Supercritical Fluid Mixtures: Ionic Association in Supercritical Aqueous Solutions

Molecular simulation is a powerful tool for understanding and predicting thermophysical properties in systems both at equilibrium and away from equilibrium and composed of molecules ranging in complexity from spherically symmetric monatomic molecules to polymers. In recent years, our research group has applied molecular simulation to the study of supercritical aqueous solutions with the goal of...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: GEOCHEMICAL JOURNAL

سال: 2002

ISSN: 0016-7002

DOI: 10.2343/geochemj.36.61