Estimation of the Chemical Form and the Boiling point of Elementary Astatine by Radiogaschromatography

  title={Estimation of the Chemical Form and the Boiling point of Elementary Astatine by Radiogaschromatography},
  author={Kiyoteru Otozai and Nakamura Takashi},
After astatine (0) was mixed with 1 3 1 1 2 containing carrier I , , the sample was analyzed by means of radiogaschromatography and the peaks due to I 2 , Atl and At2 were observed. Further, the boiling points were estimated from the retention volume in terms of the semi-empirical theory on gas chromatography. The boiling points of I 2 , Atl and At2 were 457 + 2 , 4 8 6 ± 2 and 503 ± 3 K, respectively. The boiling point of At2 obtained in the present work is far smaller than that expected by… 
10 Citations

Figures and Tables from this paper

Anomalous solvent extraction behavior of astatine

We studied the solvent extraction behavior of astatine and found the anomalous behavior of this element similar to radioiodine. Astatine was extracted into CS2 from acidic solution over a wide range

Solvent Extraction Behavior of Astatine and Radioiodine at Tracer Concentrations

The observed different extraction behavior of astatine and radioiodine were consistently explained by the respective proposed extraction reaction schemes.

Distribution behavior of astatine: Solvent extraction and back extraction

The distribution behavior of astatine was studied at tracer concentrations and over a wide range of carrier iodide concentration in both solvent extraction and back extraction processes. Astatine

Boiling points of the superheavy elements 117 and 118

It has been shown that the relativistic effect on the electrons reveal in the heavy element region.1–3 What kind of changes will appear in the heavy elements because of the relativistic effects? Can

Anomalous behavior of radioiodine: Solvent extraction from acidic solution

Anomalous behavior of radioiodine was found in solvent extraction over a wide range of iodine concentration and the distribution ratio drastically changed at about 10−5 mol l−1.

General Properties of Astatine

Only a very limited amount of direct evidence is available concerning the properties of astatine because it occurs naturally in trace amounts. In view of this, most of the data for astatine have been

Dispersal rates of astatine-211 from aqueous solutions and chloroform

The dispersal rates of 211 At, which is a promising nuclide for targeted alpha therapy, from aqueous solutions and chloroform were studied to provide experimental evidence for the reasonable

Recent Advances in the Organic Chemistry of Astatine

1 Introduction 2 Physical and Chemical Properties of Astatine 3 Synthesis and Identification of Organic Astatine Compounds 4 Physicochemical Properties of Organic Astatine Compounds 5

Halogene: Elemente der siebten Hauptgruppe