Determination of ultra-trace gold in natural water by graphite furnace atomic absorption spectrophotometry after in situ enrichment with thiol cotton fiber

2003 ◽  
Vol 479 (2) ◽  
pp. 225-231 ◽  
Author(s):  
Muqing Yu ◽  
Daowei Sun ◽  
Rui Huang ◽  
Wei Tian ◽  
Wanbin Shen ◽  
...  
Keyword(s):  
Atomic Absorption ◽  
Natural Water ◽  
Cotton Fiber ◽  
Graphite Furnace ◽  
Atomic Absorption Spectrophotometry ◽  
Absorption Spectrophotometry ◽  
Graphite Furnace Atomic Absorption ◽  
Ultra Trace

A sensitive high-temperature electrothermal atomic absorption analysis for Rb+ in erythrocytes and plasma of normal and hypertensive persons.

1985 ◽  
Vol 31 (2) ◽  
pp. 274-276 ◽  
Author(s):  
K F Hallis ◽  
N A Boon ◽  
C M Perkins ◽  
J K Aronson ◽  
D G Grahame-Smith
Keyword(s):  
Atomic Absorption ◽  
Healthy Subjects ◽  
Graphite Furnace ◽  
Atomic Absorption Spectrophotometry ◽  
Absorption Analysis ◽  
Healthy Individuals ◽  
Absorption Spectrophotometry ◽  
Graphite Furnace Atomic Absorption ◽  
The Matrix

Abstract This method for determination of Rb+ in human plasma and erythrocytes by graphite-furnace atomic absorption spectrophotometry has a sensitivity of 29 nmol/L for plasma, 12 nmol/L for erythrocytes. The detection limit is 24 nmol/L for plasma, 4.8 nmol/L for erythrocytes. This assay is approximately 30-fold more sensitive than previously reported techniques involving atomic absorption spectrophotometry, enabling use of smaller samples. The rubidium signal is linear with concentration up to 1.2 mumol/L, and addition of other cations to the matrix produces only minor alterations in the Rb+ signal. We measured plasma and erythrocytic Rb+ concentrations in healthy subjects and in patients with untreated essential hypertension. In both, our values are similar to those previously reported for healthy individuals.

scholarly journals Determination of Lead in Wine by Graphite Furnace Atomic Absorption Spectrophotometry: Interlaboratory Study

1997 ◽  
Vol 80 (6) ◽  
pp. 1287-1297 ◽  
Author(s):  
Paul A Brereton ◽  
Paul Robb ◽  
Christine M Sargent ◽  
Helen M Crews ◽  
Roger Wood ◽  
...  
Keyword(s):  
Atomic Absorption ◽  
Graphite Furnace ◽  
Atomic Absorption Spectrophotometry ◽  
Interlaboratory Study ◽  
Absorption Spectrophotometry ◽  
Target Values ◽  
Graphite Furnace Atomic Absorption ◽  
Standard Deviations ◽  
Test Materials

Abstract An interlaboratory study of a graphite furnace atomic absorption spectrophotometry (GFAAS) method for the determination of lead in wine was conducted. Seventeen laboratories from France, United States, and the United Kingdom, using a variety of GFAAS instruments, took part in the study. The method incorporated a novel matrix-matching procedure to minimize matrix effects between standards and samples. Six wine test materials were prepared and sent to participants as 12 blind duplicate or split level samples. There was good agreement between results obtained from participants and target values (24–279 μg/L) obtained with an inductively coupled plasma-mass spectrometry method. The precision of the GFAAS method was well within the range predicted by the Horwitz equation for the 6 test materials analyzed. Repeatability standard deviations ranged from 3 to 17%. Reproducibility standard deviations were in the range of 10 to 30%. The method is recommended for use for official purposes.

scholarly journals GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROPHOTOMETRY SEBAGAI METODE ANALISIS LOGAM BERAT

OSEANA ◽  
2017 ◽  
Vol 42 (3) ◽  
pp. 9-20
Author(s):  
Fitri Budiyanto
Keyword(s):  
Heavy Metal ◽  
Atomic Absorption ◽  
Light Emission ◽  
Graphite Furnace ◽  
Atomic Absorption Spectrophotometry ◽  
Trace Level ◽  
Absorption Spectrophotometry ◽  
Graphite Furnace Atomic Absorption ◽  
Ultra Trace ◽  
Hazardous Pollutants

GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROPHOTOMETRY AS A METHOD FOR ANALYZING HEAVY METAL. Heavy metal, mostly present in a (ultra) trace-level, becomes one of the hazardous pollutants due to its toxicity, bioaccumulative, biomagnification characters. Conducting a micro analysis of these trace-level pollutants, a sensitive instrument and method are strongly recommended. Graphite Furnace Atomic Absorption Spectrophotometer (GFAAS) offers a solution for the challenge. It uses the principle of light emission absorption by nascent atom cloud from the metals. The analysis has been developed in three stages of the tube heating programs, i.e. drying, ashing and then atomizing element at 3000° C. Since the injected sample is almost completely atomized, the sensitivity of GFAAS is extremely high and this value is covering up the disadvantages of the other analyses. Therefore, the GFAAS analysis is suitable fo ultra-trace analysis of ultra-trace pollutants like heavy metals in environment.

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