The Estimation of Gold in Urine by Flameless Atomic Absorption Spectroscopy

1977 ◽  
Vol 14 (1-6) ◽  
pp. 53-54 ◽  
Author(s):  
J. V. Dunckley ◽  
F. A. Staynes
Keyword(s):  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Methyl Isobutyl Ketone ◽  
Graphite Furnace ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
Aqua Regia ◽  
Flameless Atomic Absorption Spectroscopy ◽  
Furnace Atomization

An atomic absorption method is described whereby the gold excreted in the urine of patients undergoing chrysotherapy can be estimated. Gold is precipitated as telluride, dissolved in aqua regia, and extracted into methyl isobutyl ketone for estimation by atomic absorption spectroscopy using graphite furnace atomization.

Atomic Absorption Spectroscopic Determination of Molybdenum in Plant Tissue and Blood Plasma

1979 ◽  
Vol 62 (5) ◽  
pp. 1062-1064
Author(s):  
Shahamat U Khan ◽  
Richard O Cloutier ◽  
Michel Hidiroglou
Keyword(s):  
Blood Plasma ◽  
Atomic Absorption ◽  
Atomic Absorption Spectroscopy ◽  
Plant Tissue ◽  
Methyl Isobutyl Ketone ◽  
Graphite Furnace ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
Flameless Atomic Absorption Spectroscopy

Abstract A method is presented for determining molybdenum in plant tissue and blood plasma by flame and flameless atomic absorption spectroscopy (AAS). The samples are digested with HNO3- HClO4, and the metal is separated by chelation, extracted into methyl isobutyl ketone, and analyzed by AAS. Recoveries of molybdenum from fortified samples ranged from 92.0 to 98.9%. The limits of detection on the flame and graphite furnace were 10 and 2 ng/mL, respectively.

scholarly journals Determination of Transition Metals in Cigarette Smoke Condensate by Solvent Extraction and Atomic Absorption Spectroscopy

1974 ◽  
Vol 7 (5) ◽  
Author(s):  
G.P. Morie ◽  
P.E. Morrisett
Keyword(s):  
Particulate Matter ◽  
Transition Metals ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Methyl Isobutyl Ketone ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
Total Particulate Matter

AbstractA method for the determination of trace transition metals in cigarette smoke is described. The smoke particulate matter is digested in nitric acid, the acid is neutralized, and metal ions are complexed with ammonium 1-pyrrolidinecarbodithioate and extracted with methyl isobutyl ketone. The metals are then determined in the organic solvent by atomic absorption spectroscopy. The sensitivity of the method is enhanced by the use of the methyl isobutyl ketone extraction. The method was evaluated for the determination of manganese, copper, iron, and zinc in the total particulate matter of smoke from University of Kentucky reference cigarettes and from commercial cigarettes. The amounts of these metals found in the smoke of a typical commercial filter cigarette are: 0.04 µg Mn, 0.10 µg Cu, 0.8 µg Fe, and 0.6 µg Zn. The method was used to show that cellulose acetate cigarette filters remove about the same percentage of metals as total particulate matter from smoke

Estimation of Gold in Urine by Atomic Absorption Spectroscopy

1973 ◽  
Vol 19 (9) ◽  
pp. 1081-1082 ◽  
Author(s):  
J V Dunckley
Keyword(s):  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Spectrophotometric Method ◽  
Atomic Absorption Spectroscopy ◽  
Chelation Therapy ◽  
Methyl Isobutyl Ketone ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
Wet Ashing

Abstract An atomic absorption spectrophotometric method is described for estimating gold in the urine of patients undergoing chelation therapy. Variable absorption at 242.8 nm, not due to gold, is avoided by wet-ashing and extraction of gold into methyl isobutyl ketone.

Technique for Determining Nickel in Blood by Flameless Atomic Absorption Spectrophotometry

1975 ◽  
Vol 21 (4) ◽  
pp. 562-567 ◽  
Author(s):  
Hans Zachariasen ◽  
Ivar Andersen ◽  
Carl Kostol ◽  
Richard Barton
Keyword(s):  
Atomic Absorption ◽  
Sodium Citrate ◽  
Methyl Isobutyl Ketone ◽  
Graphite Furnace ◽  
Low Cost ◽  
Atomic Absorption Spectrophotometry ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
Flameless Atomic Absorption ◽  
Acceptable Accuracy

Abstract We describe a technique for determining nickel in serum by flameless atomic absorption, with use of di methylglyoxime. The procedure permits a greater num ber of analyses per technician at a relatively low cost, yet provides acceptable accuracy and reliability. After the sample is evaporated and dry ashed in a muffle fur nace at 560 #{ 176} C for 5 h, the residual salts are dissolved in hydrochloric acid (1 mol/liter). Sodium citrate and di methylglyoxlme are then added for complexation of iron and nickel, respectively. The pH is adjusted to 9 with ammonia and the nickel dimethylglyoxime is extracted with methyl isobutyl ketone. The determination is carried out by injecting 50 µl of the organic phase into the graphite furnace, where the sample is dried at 120 °C and ashed at 1200 °C, respectively.

Determination of Some Nitrophenols by Atomic Absorption Spectrometry (AAS) After Extraction of Ionic Associates Involving the Bipyridylocopper(II) or Phenanthrolinocopper(II) Complex

1994 ◽  
Vol 59 (10) ◽  
pp. 2227-2234 ◽  
Author(s):  
Václav Stužka ◽  
Jaromír Souček
Keyword(s):  
Molecular Weight ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Methyl Isobutyl Ketone ◽  
Absorption Spectrometry ◽  
Methyl Isobutyl ◽  
Isobutyl Ketone ◽  
Indirect Determination ◽  
Ionic Associates

A new method has been developed for the indirect determination of nitroso- and nitrophenols by atomic absorption spectrometry (AAS) after extraction of ionic associates involving bipyridylocopper(II) (CuDP) or phenanthrolinocopper(II) (CuPH) complexes. Nitrobenzene and methyl isobutyl ketone appeared to be suitable for the extraction. It was possible to determine several tenths to hundredths of a milligram of nitrophenol in a litre. Extractable associates with CuDP and CuPH are formed by phenols possessing two substituents or by higher molecular weight phenols such as naphthol or hydroxyquinoline. Monosubstituted phenols fail to form associates of this kind.

Determining Beryllium in Drinking Water by Graphite Furnace Atomic Absorption Spectroscopy

1993 ◽  
Vol 85 (2) ◽  
pp. 77-83 ◽  
Author(s):  
Darren A. Lytle ◽  
Michael R. Schock ◽  
Nicholas R. Dues ◽  
James U. Doerger
Keyword(s):  
Drinking Water ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Graphite Furnace ◽  
Graphite Furnace Atomic Absorption
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