+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Determination of chromium in river waters by electrothermal atomic absorption spectrometry with preconcentration on a tantalum wire



Determination of chromium in river waters by electrothermal atomic absorption spectrometry with preconcentration on a tantalum wire



Fresenius' Journal of Analytical Chemistry 371(8): 1130-1133



The preconcentration of chromium on tantalum wire followed by electrothermal atomic absorption spectrometry with a tungsten tube atomizer is described. The preconcentration is accomplished by adsorbing chromium on a tantalum wire. The optimal immersion time was 3 mm. The best pH for chromium adsorption was 3. Under optimal conditions, the detection limit was 15 pg mU1 (3 x SIN). The effects on the preconcentration of chromium by large amounts of contaminants were evaluated. Even though matrix elements existed in 10(3)-10(4)-fold excess in water, the chromium absorption signal was not affected by the matrix elements. The method with preconcentration on tantalum wire was applied to the determination of chromium in river water.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 045746595

Download citation: RISBibTeXText

PMID: 11798111


Related references

Determination of Antimony in Waters by Electrothermal Atomic Absorption Spectrometry with Preconcentration on a Tantalum Wire. Microchimica Acta 141(1-2): 87-91, 2003

Determination of chromium(III) and chromium(VI) in river water by electrothermal atomic absorption spectrometry after sorption preconcentration in a microwave field. Analyst 119(11): 2477-2480, 1994

Differential determination of chromium(VI) and total chromium in natural waters using flow injection on-line separation and preconcentration electrothermal atomic absorption spectrometry. Analyst 117(3): 629-635, 1992

Preconcentration of trace lead by adsorption onto a tantalum wire for electrothermal atomization atomic absorption spectrometry with a tungsten tube atomizer. Microchemical Journal 86(1): 89-93, 2007

Preconcentration technique for manganese by adsorption onto a tantalum wire for tungsten tube atomizer electrothermal atomization atomic absorption spectrometry. Microchimica Acta 162(1-2): 73-79, 2008

Determination of silver in environmental samples by tungsten wire preconcentration method-electrothermal atomic absorption spectrometry. Talanta 62(5): 1047-1050, 2008

Separation and preconcentration of chromium species by selective absorption on Lemna minor and determination by slurry atomisation electrothermal atomic absorption spectrometry. Analyst 126(8): 1453-1455, 2001

Preconcentration and speciation of chromium by the determination of total chromium and chromium(III) in natural waters by flame atomic absorption spectrometry with a chelating ion-exchange flow infection system. Analytica Chimica Acta 327(1): 37-45, 1996

Preconcentration of chromium (III) and speciation of chromium by electrothermal atomic absorption spectrometry using cellulose adsorbent. Fresenius' Journal of Analytical Chemistry 371(7): 1037-1040, 2002

On-line coupling of electrochemical preconcentration in tungsten coil electrothermal atomic absorption spectrometry for determination of lead in natural waters. Spectrochimica Acta Part B Atomic Spectroscopy 54(8): 1155-1166, Aug 9, 1999

Determination of beryllium in natural and waste waters using on-line flow-injection preconcentration by precipitation/dissolution for electrothermal atomic absorption spectrometry. Talanta 52(1): 27-37, 2008

Determination of beryllium in natural and waste waters using on-line flow-injection preconcentration by precipitation/dissolution for electrothermal atomic absorption spectrometry. Talanta 52(1): 27-37, May 31, 2000

Determination of chromium by electrothermal atomic absorption spectrometry in waters using a forked platform and co-injection of Mg as chemical modifier. Analytica Chimica Acta 428(2): 265-278, 9 February, 2001

Determination of Cd, Co, Cr, Cu, Fe, Mn, Ni and Pb in natural waters, alkali and alkaline earth salts by electrothermal atomic absorption spectrometry after preconcentration by column solid phase extraction. Microchimica Acta 130(3): 185-190, 1999

Preconcentration and speciation of trace amounts of chromium in saline samples using temperature-controlled microextraction based on ionic liquid as extraction solvent and determination by electrothermal atomic absorption spectrometry. Talanta 99: 758-766, 2012