Abstract
Trace metals (Cd, Cu, Mn, Pb, and Zn) in whole blood, Fukui prefecture, were determined by atomic absorption spectrometry with a flame and flameless system. Whole blood was decomposed with nitric acid by means of wet oxidation and dried, then dissolved with 15ml of 6N hydrochloric acid. Then Iron (III) in the solution was extracted with MIBK.
Each trace metal in aqueous solution after solvent extracting was directly determined by using an atomic absorption spectrometer. Trace amount of metals was determined by the calibration curve and interferences of other materials in whole blood were corrected with a D2-lamp.
The present method is applicable to the determination of heavy metals in whole blood, since the recovery of each trace metal in whole blood was 91-108% and coefficient of variation of the measured concentration was 0.6-4.9%.
Then 339 whole blood samples were taken from the 17-64 year-old adults in Fukui prefecture. The statistical distribution of analytical value of each trace metals showed an approximate “long-normal” distribution. The results obtained were as follows;
1) The mean value of each metal content in whole blood 339 samples was 938μg of zinc, 96.5μg of copper, 0.74μg of cadmium, 12.1μg of lead and 5.4μg of manganese in 100g of whole blood.
2) It was also noted that female whole blood contained a significantly greater amount of cadmium than male whole blood. But the difference was not recognized on metal content of male and female whole blood for other metals except cadmium.
3) On the comparison of metal contents of the age section, the mean value of content of metals was not noted significant difference for both male and female.
4) In region, drinking water, and blood groups, some metal contents in whole blood showed a significant difference.
5) Further, some correlation coefficients were noted amoung some metals.
