[Determination of copper, iron and zinc in hair of mentally retarded children by oscillopolarography].
The oscillopolarographic method (proposed by Ding Jianwen)for the simulltaneous determination of copper, iron and zinc in hair was further studied and applied to the investigation of copper, iron, zinc content in hair samples from 46 mentally retarded children and 49 healthy children. For copper, iron, zinc, the detection limits were 0.03, 0.03, 0.01 microgram/ml, dynamic range 0.05-15, 0.05-2.5, 0.2-10 micrograms/ml, the RSD of sample analysis 3.2%, 3.3%, 2.4%, the recoveries 96: 0%-105.2%, 2%, 97.3%-109.0%, 94.7%-107.7%, respectively. The difference between the results for the same sample by this method and the atomic absorption spectroscopic method was no statistical significance. The results showed that the copper content and iron content of hair samples from mentally retarded children were significantly lower than those of healthy children.
Tian
Y
Y
Department of Sanitary Technology, School of Public Health, Chengdu.
Wang
G
G
Mu
W
W
Liu
Y
Y
Yuan
P
P
Cai
M
M
Li
M
M
D002648:Child; D003300:Copper / Q000032:analysis*; D005260:Female; D006197:Hair / Q000737:chemistry*; D006801:Humans; D008607:Intellectual Disability / Q000378:metabolism*; D007501:Iron / Q000032:analysis*; D008297:Male; D011048:Polarography / Q000379:methods; D015032:Zinc / Q000032:analysis*
D003300:Copper; D007501:Iron; D015032:Zinc