scholarly journals Direct Determination of Aluminium Concentration in Human Blood Through Laser Photoionization Spectroscopy

1984 ◽  
Vol 5 (1) ◽  
pp. 11-17 ◽  
Author(s):  
G. I. Bekov ◽  
V. S. Letokhov ◽  
V. N. Radayev
Keyword(s):  
Human Blood ◽  
Molecular Beam ◽  
Rydberg State ◽  
Analytical Procedure ◽  
Direct Determination ◽  
Aluminium Content ◽  
Electron Multiplier ◽  
Aluminium Concentration ◽  
Laser Photoionization

The results of aluminium content measurements in human blood by the method of laser stepwise photoionization of atoms in combination with vacuum thermal atomization of organic substance are presented. The analytical procedure was as follows. Dry blood residium obtained after drying of 40 μl natural blood was stepwise heated in vacuum to 1800℃. The aluminium atoms produced in an atomic-molecular beam were excited to a Rydberg state in two steps by laser radiation and then efficiently ionized by electric field pulse. The resulting ions were detected with an electron multiplier. The calibration curve obtained for aqueous solutions of AlCl3 was used for quantitative determination of aluminium content. The measured value of aluminium concentration in human blood came to (230 ± 50) ng/ml.

THE SIGNIFICANCE OF HUMAN BLOOD TRYPSIN; DIRECT DETERMINATION OF THROMBIN AND PLASMIN IN HUMAN PLASMA

1962 ◽  
Vol 40 (12) ◽  
pp. 1725-1735 ◽  
Author(s):  
Edward Ronwin
Keyword(s):  
Human Plasma ◽  
Human Blood ◽  
Direct Determination ◽  
Precursor Protein ◽  
Common Precursor ◽  
Conversion System ◽  
Human Thrombin ◽  
Derivatives Of

The previously described method for human plasmin determination has been simplified and applied directly to plasma. A virtually identical method for the direct determination of human thrombin in plasma is also presented. Both procedures are quantitative and clinically feasible. The existence in plasma of a non-clotting, only slightly fibrinolytic, active tryptic enzyme, Human Blood Trypsin, is firmly established by the data. The suggestion is made that human blood trypsin may be the activator in the proenzyme to enzyme conversion system for both plasmin and thrombin. Further, both enzymes may arise from different derivatives of a common precursor protein.

scholarly journals Evaluation of Direct Determination of Mercury in Whole Human Blood Using a Mercury Analyzer

2011 ◽  
Vol 32 (3) ◽  
pp. 102-106 ◽  
Author(s):  
Paloma Herbello-Hermelo ◽  
Pilar Bermejo-Barrera
Keyword(s):  
Human Blood ◽  
Direct Determination ◽  
Mercury Analyzer
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