Decreasing the depressing effect of chlorides on graphite-furnace atomic-absorption analysis by addition of excess lithium to the sample

1978 ◽  
Vol 28 (1) ◽  
pp. 10-13
Author(s):  
B. V. L'vov ◽  
L. A. Pelieva ◽  
A. I. Sharnopol'skii
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

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.


1987 ◽  
Vol 46 (4) ◽  
pp. 335-339
Author(s):  
D. A. Katskov ◽  
L. A. Vasil'eva ◽  
I. L. Grinshtein ◽  
G. O. Savel'eva

2013 ◽  
Vol 17 (2) ◽  
pp. 159-169 ◽  
Author(s):  
Y. А. Zakharov ◽  
О. B. Kokorina ◽  
B. R. Grigoryan ◽  
R. V. Okunev ◽  
D. S. Irisov ◽  
...  

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