Analysis on the results of five trace elements in peripheral blood of children in Beijing / 中华检验医学杂志

ABSTRACT

Objective To provide a reference for prevention of trace elements deficiency in children by investigating the distribution and variation law of Ca,Cu,Zn,Fe,Mg of children in Beijing area.Methods Five kinds of trace elements( Ca,Cu,Zn,Fe,Mg) in peripheral blood of 7972 children of Beijing Children's Hospital for health examination from 2010 to 2011 were detected by atomic absorption spectrometer.The children were Beijing urban residents.They were divided into five age groupsinfancy group ( 1 - 12 months,1506 cases),toddler age group ( 1 - 2 years,2766 cases),preschool age group ( 3 - 6 years,1918 cases),school age group (7 - 11 years,1576 cases) and adolescence group ( 12 - 18 years,206 cases).According to gender,each group was sub-divided into male and female group.The distributions of the 5 kinds of trace elements were analyzed among different age and gender groups.Results With the age increasing,the trend of the levels of Ca and Cu were downward,but the levels of Zn and Fe were upward,and the level of Mg was stable.For boys and girls,the levels of Cu in infancy group were (21.90 ±2.89) and(21.25 ±2.80) μmoL/L; in toddler age group,they were (21.76 ±2.78)and (21.29 ±2.69) μmol/L; in preschool age group,they were ( 21.32 ± 2.83 ) and ( 20.88 ± 2.84 ) μ mol/L; and in school age group,they were (20.81 ± 3.02 ) and ( 20.36 ± 3.37 ) μmol/L,respectively.The distribution of Cu showed significantly different among different gender groups ( t =4.640,4.475,3.290,2.894; P ＜ 0.01 ).In adolescence group,the levels of Cu were ( 19.53 ± 2.91 ) and (20.30 ± 2.90) μmol/L for boys and girls respectively and there was no significant difference ( t =- 1.796,P ＞ 0.05 ).In each gender group,the content of Ca,Zn,Fe,and Mg was not significantly different between boys and girls.It was common for the deficiency of Zn and Fe in all ages.Their total deficiency rates were 58.9％ and 19.2％.The deficiency rates of Zn and Fe in infancy were 67.7％ and 42.3％.Conclusions The distributions of Ca,Cu,and Mg in peripheral blood of children in Beijing become reasonable.Fe and Zn are deficient in different degree,and should be rationally used according to clinical guide.