✦ LIBER ✦

Separation and Concentration of the Trimethylselenonium Ion for Its Determination in Urine by Graphite Furnace Atomic Absorption Spectrometry

✍ Scribed by K. Tsunoda; Y. Takano; K. Matsumoto; H. Kawamoto; H. Akaiwa

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 345 KB
Volume: 49
Category: Article
ISSN: 0026-265X
DOI: 10.1006/mchj.1994.1039

No coin nor oath required. For personal study only.

✦ Synopsis

The separation and concentration methods for the trimethylselenonium ion (TMSe) in urine samples were developed utilizing the formation of the ion pair of TMSe with tetrakis(4fluorophenyl)borate. The ion pair could be quantitatively collected by a solvent extraction technique as well as a cellulose nitrate (CN) filter collection technique. The collected TMSe was determined by graphite furnace atomic absorption spectrometry with the addition of palladium as a matrix modifier. In the case of urine analysis for TMSe, the CN filter technique gave better reproducibility than the solvent extraction technique. The detection limit of this method for TMSe was I (\mathrm{ngSe} / \mathrm{ml}) for (20 \mathrm{ml}) of urine sample. O 1994 Academic Press, Inc.

📜 SIMILAR VOLUMES

Ruthenium, a Potential Chemical Modifier

Ruthenium, a Potential Chemical Modifier for the Determination of Lead by Graphite Furnace Atomic Absorption Spectrometry

✍ Kangmei Cai; Curtis W. McDonald 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 97 KB

Ruthenium shows promise for use as a chemical modifier for the determination of ultratrace quantities of lead in solution when compared with the popular and widely used palladium. There is experimental evidence that ruthenium reacts with lead in the graphite tube to form the intermetallic compound P

Separation of Iron, Cobalt, Nickel, and

Separation of Iron, Cobalt, Nickel, and Copper from Aluminum Fluoride and Their Determination by Graphite Furnace Atomic Absorption Spectrometry

✍ J. Jaganathan; I. Aggarwal 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 191 KB

An analytical method for the determination of iron, cobalt, nickel, and copper in aluminum fluoride has been described. The insolubility of \(\mathrm{AlF}_{3}\) in inorganic acids makes it necessary to separate these metals by leaching them with \(\mathrm{HNO}_{3}\). The metals that leached out were

Determination of Cadmium and Lead in Blo

Determination of Cadmium and Lead in Blood Reference Samples by Simultaneous Graphite Furnace Atomic Absorption Spectrometry

✍ A. Deval; J. Sneddon 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 186 KB

Determination of gallium in iron meteori

Determination of gallium in iron meteorites and other iron-rich materials by graphite furnace atomic absorption spectrometry

✍ Xun Guo; Maki Hoashi; Robert R. Brooks; Roger D. Reeves 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 449 KB

A procedure was developed for the graphite furnace atomic absorption spectrometnc determmatlon of galhum m high-iron geological matenals such as iron meteontes To overcome severe interference from iron, gallium 1s extracted as a chloro complex from 5 M hydrochloric aad mto lsobutyl methyl ketone Iro

Automatic on-line preconcentration syste

Automatic on-line preconcentration system for graphite furnace atomic absorption spectrometry for the determination of trace metals in sea water

✍ Zhen-Shan Liu; Shang-Da Huang 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 444 KB

An automatic on-line preconcentration system for graphite furnace atomic absorption spectrometty (GFAAS) for the determination of trace metals in sea water was developed. This system was modified from a Perkin-Elmer AS-40 autosampler by mounting a silica gel Crs microcolumn near the tip of the autom

Coprecipitation with tin(IV) hydroxide f

Coprecipitation with tin(IV) hydroxide followed by removal of tin carrier for the determination of trace heavy metals by graphite-furnace atomic absorption spectrometry

✍ Masataka Hiraide; Zou-Sheng Chen; Kohziro Sugimoto; Hiroshi Kawaguchi 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 390 KB

Nanogram amounts of trace heavy metals are quantitatively coprecipitated with tin( IV) hydroxide at pH 5-6. After centrifugation, the precipitate is dissolved in nitric acid and the solution is allowed to stand overnight to form stannic acid. More than 90% of tin is precipitated, leaving trace heavy