Verfahren zur Rückgewinnung von Schwermetallen

Details

Veröffentlichungs-Nr.

EP2572806

Aktenzeichen

EP12185503

Anmeldetag

21. September 2012

Veröffentlichung

2. November 2016

Erteilung

2. November 2016

Rechtsraum

EP

IPC

B09C1/02C02F1/28C22B3/44C22B7/00

Abstract

The present invention provides a method of recovering a heavy metal by which the variation in heavy metal recovery rate among samples can be suppressed. A mixture of a sample and a chelating agent capable of chelating with a heavy metal is prepared. A complex between a heavy metal being in the sample and the chelating agent is formed in the presence of a masking agent for a thiol group in the mixture. The heavy metal in the sample is recovered by recovering the complex. By this method, a heavy metal can be recovered with suppressing the variation in the recovery rate among samples. The chelating agent preferably is 1,5-diphenyl-3-thiocarbazone (dithizone). As the masking agent, N-ethylmaleimide, iodoacetamide, iodoacetic acid, or the like can be used.

Anmelder

Firma

ARKRAY, Inc.

Land

🇯🇵 Japan

Fachgebiete