+ 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

Flow injection on line separation and preconcentration for electrothermal atomic absorption spectrometry part 1. determination of ultratrace amounts of cadmium copper lead and nickel in water samples



Flow injection on line separation and preconcentration for electrothermal atomic absorption spectrometry part 1. determination of ultratrace amounts of cadmium copper lead and nickel in water samples



Journal of Analytical Atomic Spectrometry 6(4): 295-300



Combining a micro-scale flow injection preconcentration system on-line with electrothermal atomic absorption spectrometry results in a powerful integrated system. the most outstanding advantages are improved detection limits achieved by preconcentration and matrix separation, and low contamination because of the totally closed system. The discontinuous process of preconcentration is suitably accommodated in the measuring cycle of a graphite furnace, even enhancing the cycle time for complex matrices, because the lengthy programmes that are needed in order to separate the analyte from excess of matrix compounds are avoided. The integrated system permits fully automated operation, avoiding time-consuming manual work and enhancing the reproducibility and precision. Results obtained for the determination of ultratrace amounts of some elements in sea-watr demonstrate the high sensitivity, good accuracy and precision of this technique. Using a time based technique equivalent to only 3 ml of sample, the sensitivity of the graphite furnace technique was enhanced about 20-fold compared with a 40 .mu.l injection volume. Detection limits achieved were 0.8, 6.5 17 and 36 ng l-1 (3.sigma.) for Cd, Pb, Cu and Ni, respectively.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 007354339

Download citation: RISBibTeXText

DOI: 10.1039/ja9910600295


Related references

Determination of ultratrace amounts of copper and cadmium in seawater by graphite furnace atomic absorption spectrometry with flow-injection semi on-line preconcentration. Microchemical Journal 48(3): 326-342, 1993

Determination of copper, manganese and nickel in biological samples and sea-water by flow injection on-line sorption preconcentration in a knotted reactor coupled with electrothermal atomic absorption spectrometry. Journal Of Analytical Atomic Spectrometry. 13(6): 527-531, E, 1998

Determination of cadmium, lead and copper in water samples by flame atomic-absorption spectrometry with preconcentration by flow-injection on-line sorbent extraction. Talanta 38(6): 613-619, 1991

Preliminary results on the determination of ultratrace amounts of cadmium in tea samples using a flow injection on-line solid phase extraction separation and preconcentration technique to couple with a sequential injection hydride generation atomic fluorescence spectrometry. Talanta 67(5): 968-974, 2005

Determination of Trace Copper, Lead, Cadmium, and Iron in Environmental and Biological Samples by Flame Atomic Absorption Spectrometry Coupled to Flow Injection On-Line Coprecipitation Preconcentration Using DDTC-Nickel as Coprecipitate Carrier. International Journal of Environmental & Analytical Chemistry 76(4): 267-282, 2000

Determination of (ultra)trace amounts of lead in biological materials by on-line coupling flow injection microcolumn separation and preconcentration to electrothermal atomic absorption spectrometry using a macrocycle immobilized silica gel sorbent. Journal of Analytical Atomic Spectrometry 14(10): 1625-1629, 1999

Fully automatic on-line separation preconcentration system for electrothermal atomic absorption spectrometry: determination of cadmium and lead in sea-water. Analyst 122(7): 679-684, 1997

Ultratrace determination of lead, cadmium and copper in environmental and biological samples by atomic absorption spectrometry after their separation and preconcentration using octadecyl silica membrane disks modified with a new S-N Schiff base. International Journal of Environmental Analytical Chemistry 83(12): 997-1008, 2003

A flow injection online micelle-mediated preconcentration and separation procedure without phase separation coupled with electrothermal atomic absorption spectrometry for determination of trace lead in biological samples. Journal of Analytical Atomic Spectrometry 18(8): 946-950, 2003

Flow injection on-line sorption separation and preconcentration with a knotted reactor for electrothermal atomic absorption spectrometric determination of lead in biological and environmental samples. Journal Of Analytical Atomic Spectrometry. 12(4): 459-464, 1997

Selective measurement of ultratrace methylmercury in fish by flow injection on-line microcolumn displacement sorption preconcentration and separation coupled with electrothermal atomic absorption spectrometry. Analytical Chemistry 75(10): 2251-2255, 2003

Evaluation of an immobilised macrocyclic material for on-line column preconcentration and separation of cadmium, copper and lead for electrothermal atomic absorption spectrometry. Analytica Chimica Acta 392(1): 55-65, 1999

On-line coupling flow injection microcolumn separation and preconcentration to electrothermal atomic absorption spectrometry for determination of (ultra)trace selenite and selenate in water. Analytical Chemistry 71(19): 4353-4360, 1999

On-line coupling of flow injection microcolumn separation and preconcentration to electrothermal atomic absorption spectrometry for determination of (Ultra)trace selenite and selenate in water. Analytical Chemistry Washington 71(19): 4353-4360, 1999

Determination of copper, iron, lead, cadmium, cobalt and nickel by atomic absorption spectrometry in baking powder and baking soda samples after preconcentration and separation. Journal of Food and Drug Analysis 10(3): 188-194, 2002