PUMA
Istituto di Geoscienze e Georisorse     
Montegrossi G., Tassi F., Vaselli O., Bidini E., Minissale A. A new, rapid and reliable method for the determination of sulphur reduced (S-II) species in natural water discharges. In: Applied Geochemistry, vol. 21 (5) pp. 849 - 857. Elsevier, 2006.
 
 
Abstract
(English)
The determination of reduced S species in natural waters is particularly difficult due to their high instability and chemical and physical interferences in the current analytical methods. In this paper a new, rapid and reliable analytical procedure is presented, named the Cd-IC method, for their determination as ΣS2− via oxidation to Formula Not Shown after chemical trapping with an ammonia-cadmium solution that allows precipitation of all the reduced S species as CdS. The S2−-SO4 is analysed by ion-chromatography. The main advantages of this method are: low cost, high stability of CdS precipitate, absence of interferences, low detection limit (0.01 mg/L as SO4 for 10 mL of water) and low analytical error (about 5%). The proposed method has been applied to more than 100 water samples from different natural systems (water discharges and cold wells from volcanic and geothermal areas, crater lakes) in central-southern Italy.
URL: http://https://www.journals.elsevier.com/applied-geochemistry/
Subject chemical analysis
analytical methodologies
reduced sulphur species determination
natural waters
laboratory methods
field procedures


Icona documento 1) Download Document PDF


Icona documento Open access Icona documento Restricted Icona documento Private

 


Per ulteriori informazioni, contattare: Librarian http://puma.isti.cnr.it

Valid HTML 4.0 Transitional