Preconcentration of copper on algae and determination by slurry graphite furnace atomic absorption spectrometry

Unicellular green algae are utilized to preconcentrate Cu ions from seawater and riverine water samples. Studies show that after the algae are rinsed with 1% HCl, Cu adsorption on the algae is improved. The addition of sodium citrate and dodecyl sulfate can also improve Cu adsorption. The algae weig...

Full description

Saved in:
Bibliographic Details
Published in:Analytical chemistry (Washington) 1990-09, Vol.62 (18), p.1994-1997
Main Authors: Shengjun, Mo, Holcombe, James A
Format: Article
Language:English
Subjects:
Analytical chemistry
Brackish
Chemistry
Chlorophyta
Exact sciences and technology
Freshwater
Marine
Spectrometric and optical methods
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Unicellular green algae are utilized to preconcentrate Cu ions from seawater and riverine water samples. Studies show that after the algae are rinsed with 1% HCl, Cu adsorption on the algae is improved. The addition of sodium citrate and dodecyl sulfate can also improve Cu adsorption. The algae weight and the solution pH are not critical. The seawater matrix does not affect the adsorption efficiency for Cu. Cu preconcentration can be achieved by mixing 6 mg of algae with 10-100 mL of sample and subsequently separating by centrifugation. The algae pellet is then resuspended in 1 mL of 0.5% HNO sub(3) and analyzed as a slurry by graphite furnace atomic absorption spectrometry. The determined values of Cu in riverine (SLRS-1) and seawater (CASS-1) standard reference materials are within the limits of certification.
ISSN:0003-2700
1520-6882
DOI:10.1021/ac00217a018