Transferability of blood lead determinations by furnace atomic absorption spectrophotometry and continuum background correction

1995 ◽  
Vol 41 (10) ◽  
pp. 1451-1454 ◽  
Author(s):  
H Qiao ◽  
P J Parsons ◽  
W Slavin
Keyword(s):  
Detection Limit ◽  
Atomic Absorption ◽  
Reference Materials ◽  
Human Blood ◽  
Blood Lead ◽  
Atomic Absorption Spectrophotometry ◽  
Absorption Spectrophotometry ◽  
Blood Specimens ◽  
Blood Lead Determination ◽  
The Continuum

Abstract We have examined and proved feasible the transfer of a method for blood lead determination, developed and optimized for a Zeeman-corrected instrument, to a continuum-corrected furnace atomic absorption spectrophotometer. Numerous reference materials analyzed with the continuum-corrected instrument gave results within 10 micrograms/L (0.05 mumol/L) at low values and varied by < 6% at values > 200 micrograms/L (0.97 mumol/L). Forty-four routine human blood specimens were analyzed by the same method with both continuum- and Zeeman-corrected instrumentation, and gave results that agreed within about the same limits as found with reference materials. The day-to-day precision was about 1/5 the accuracy results. The detection limit was approximately 5 micrograms/L (0.025 mumol/L).

scholarly journals Determination of Selenium in Meat Products by Hydride Generation Atomic Absorption Spectrophotometry

1999 ◽  
Vol 82 (2) ◽  
pp. 364-367 ◽  
Author(s):  
Ujang Tinggi
Keyword(s):  
Atomic Absorption ◽  
Reference Materials ◽  
Meat Products ◽  
Hydride Generation ◽  
The United States ◽  
Atomic Absorption Spectrophotometry ◽  
Standard Reference Materials ◽  
Constant Attention ◽  
Absorption Spectrophotometry ◽  
Meat Samples

Abstract Wet digestion using a mixture of nitric, sulfuric, and perchloric acids and an aluminum block digester effectively and rapidly decomposed meat samples for selenium determination by hydride generation atomic absorption spectrophotometry. Digestion did not require constant attention by an operator. Selenium recoveries (range, 94-105%) from National Institute ofStandards and Technology standard reference materials and spiked samples were used to validate method accuracy. Coefficients of variation (CVs) of repeatability of in-house reference materials used forprecision study were 6.4 and 5.6%, respectively, for seafood mix and mutton liver. Selenium levels in meat products from Brisbane markets varied widely: 0.042-0.142,0.081- 0.42, and 0.050-0.198 μg/g (wet weight) respectively, for beef, chicken, and pork. Overall, selenium levels in manufactured meat ranged from0.041 to 0.189 fig/g. The levels of selenium foundinthis study were generally lower than those reported in Finland but comparable with those reported in some parts of the United States

Direct Determination of Nickel in Catalytic-Cracking Feedstocks by Atomic-Absorption Spectrophotometry

1966 ◽  
Vol 20 (4) ◽  
pp. 212-213 ◽  
Author(s):  
J. D. Kerber
Keyword(s):  
Detection Limit ◽  
Atomic Absorption ◽  
Catalytic Cracking ◽  
Direct Determination ◽  
Atomic Absorption Spectrophotometry ◽  
Rapid Testing ◽  
Absorption Spectrophotometry ◽  
Determination Of Nickel ◽  
No Sample Preparation

Nickel in catalytic-cracking feedstocks is determined by atomic-absorption spectrophotometry with no sample preparation other than dilution in p–xylene. A modification of the method of additions permits rapid testing with a detection limit of 0.05 ppm Ni and a precision of 0.05 ppm.

Blood lead by furnace-Zeeman atomic absorption spectrophotometry

1985 ◽  
Vol 32 (1) ◽  
pp. 55-63 ◽  
Author(s):  
Shane S. Que Hee ◽  
Timothy J. Macdonald ◽  
Robert L. Bornschein
Keyword(s):  
Atomic Absorption ◽  
Blood Lead ◽  
Atomic Absorption Spectrophotometry ◽  
Absorption Spectrophotometry

Flameless Atomic Absorption Spectrophotometry of Selenium in Fish and Food Products

1977 ◽  
Vol 60 (5) ◽  
pp. 1010-1014 ◽  
Author(s):  
Gerald T C Shum ◽  
Harry C Freeman ◽  
John F Uthe
Keyword(s):  
Detection Limit ◽  
Reference Material ◽  
Atomic Absorption ◽  
Graphite Furnace ◽  
Milk Powder ◽  
Atomic Absorption Spectrophotometry ◽  
Fish Tissues ◽  
Flameless Atomic Absorption ◽  
Absorption Spectrophotometry ◽  
Fish Samples

Abstract A method is described for determining selenium in fish tissues, meat, cereals, milk powder, and other materials by flameless atomic absorption spectrophotometry. Samples are solubilized in HNO3 and atomized in a graphite furnace in the presence of nickel nitrate. Recoveries of 0.500 and 1.000 μg selenium added to several fish samples averaged 99.0 and 98.3%, respectively, with standard deviations of 5.3 and 4.0. Results agreed with those obtained for samples previously analyzed by fluorometry, and with results for NBS Standard Reference Material. The detection limit was 3 ng/ml solution and 50 ng/g sample.

scholarly journals Improved electrothermal determination of aluminum in serum by atomic absorption spectroscopy.

1980 ◽  
Vol 26 (2) ◽  
pp. 258-260 ◽  
Author(s):  
F R Alderman ◽  
H J Gitelman
Keyword(s):  
Detection Limit ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Graphite Furnace ◽  
Atomic Absorption Spectrophotometry ◽  
Graphite Tube ◽  
Improved Method ◽  
Absorption Spectrophotometry

Abstract We describe an improved method for determination of aluminum in serum by atomic absorption spectrophotometry with a graphite furnace. Interferences have been controlled and total combustion of the samples achieved by the use of new diluent in a molybdenum-treated graphite tube. The detection limit of this method is 2 microgram/L.

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