The Application of Atomic Absorption Method as a Flow Detector to Gel Chromatography

1973 ◽  
Vol 6 (7) ◽  
pp. 595-601 ◽  
Author(s):  
Norimasa Yoza ◽  
Shigeru Ohashi
Keyword(s):  
Atomic Absorption ◽  
Gel Chromatography ◽  
Absorption Method ◽  
Atomic Absorption Method ◽  
Flow Detector

Determination of Minor Nutrients in Fertilizers by Atomic Absorption Spectrophotometry: Second Collaborative Study

1965 ◽  
Vol 48 (6) ◽  
pp. 1100-1103
Author(s):  
C H Mcbride
Keyword(s):  
Atomic Absorption ◽  
Collaborative Study ◽  
Atomic Absorption Spectrophotometry ◽  
Absorption Method ◽  
Atomic Absorption Method ◽  
Absorption Spectrophotometry ◽  
Minor Nutrients

Abstract The atomic absorption method studied last year was re-examined and extended to include calcium and sodium. The procedures were submitted to 16 collaborators for determination of Ca, Cu, Fe, Mg, Mn, Na, and Zn. Results for Ca and Na were discouraging; further study is recommended.

Atomic absorption method of determining vanadium in titanium tetrachloride

1971 ◽  
Vol 14 (4) ◽  
pp. 416-418
Author(s):  
N. K. Rudnevskii ◽  
V. T. Demarin ◽  
T. M. Gruzdeva
Keyword(s):  
Atomic Absorption ◽  
Titanium Tetrachloride ◽  
Absorption Method ◽  
Atomic Absorption Method

Collaborative Study of the Determination of Molybdenum in Fertilizers

1972 ◽  
Vol 55 (5) ◽  
pp. 989-990
Author(s):  
S R Koirtyohann
Keyword(s):  
Atomic Absorption ◽  
Collaborative Study ◽  
Positive Bias ◽  
Absorption Method ◽  
Atomic Absorption Method ◽  
Additional Work

Abstract An atomic absorption method for the determination of molybdenum in fertilizers was tested collaboratively. The results indicate that additional work is needed to improve precision at low molybdenum levels and to test for a possible positive bias in the method.

Hydrogen Selenide Evolution-Electrothermal Atomic Absorption Method for Determining Nanogram Levels of Total Selenium

1981 ◽  
Vol 64 (2) ◽  
pp. 265-269
Author(s):  
Dennis H Cox ◽  
Ann E Bibb
Keyword(s):  
Atomic Absorption ◽  
Bovine Liver ◽  
Absorption Method ◽  
Acid Digestion ◽  
Hydrogen Selenide ◽  
Atomic Absorption Method ◽  
Mixed Acid ◽  
Relative Standard ◽  
Environmental Materials ◽  
Total Selenium

Abstract A hydrogen selenide (H2Se) evolution-electrothermal atomic absorption method is described for determining nanogram concentrations of total selenium (Se) in biological and environmental materials. A mixed acid digestion procedure is used to decompose organic material. Sodium borohydride, a redesigned hydride generator, and an electric-heated absorption tube are used for H2Se evolution and conversion to atomic Se. The method has a detection limit of 4 ng/mL and a sensitivity of 0.6 ng/mL, and is linear from 0 to 90 ng Se/mL. As determined on urine, water, and bovine liver, total and within-run precision had relative standard deviation values of 5-17.2 and 5.5-12.6%, respectively. Accuracy was established with 2 NBS and 3 EPA reference materials, and mean errors of 0 to +0.8 were obtained. Mean recoveries of 109 and 101% were obtained for 10 and 50 ng Se added to human urine.

The determination of chromic oxide in faeces samples by atomic absorption spectrophotometry

1962 ◽  
Vol 59 (3) ◽  
pp. 381-385 ◽  
Author(s):  
C. H. Williams ◽  
D. J. David ◽  
O. Iismaa
Keyword(s):  
Atomic Absorption ◽  
Chemical Method ◽  
Atomic Absorption Spectrophotometry ◽  
Test Solution ◽  
Chromic Oxide ◽  
Absorption Method ◽  
Atomic Absorption Method ◽  
Absorption Spectrophotometry ◽  
Calcium And Magnesium

A rapid and accurate atomic absorption method for the determination of chromium in faeces samples from pasture experiments using chromic oxide ‘markers’ is described. Of the elements present after ashing and digesting the samples in a phosphoric acid—manganese sulphate—potassium bromate solution silicate, aluminium, calcium and magnesium were found to interfere in the determination. The effects of these interferences were overcome by the addition of calcium to the test solution and by the addition of silicate to the standards, which were prepared in ‘blank’ solutions.The sensitivities of a number of alternate chromium resonance lines relative to that of Cr 3578·7 Å. are given. These lines may be used to increase the concentration range of the analysis.The results of a comparison of the atomic absorption method with a chemical method are given.

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