Shen Mei, Ma An-De
Central Laboratory, Southern Medical University, Guangzhou 510515, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2005 May;25(5):796-8.
Eight kinds of microelements (Mn, Cu, Zn, Fe, Na, Co, Mg and K) in Dongjiang river sand were detected and analysed by flame atomic absorption spectrometry(FAAS). The method is simple and rapid with good precision and accuracy, and eliminates the interference effectively. The regression equation and the correlation coefficient were calculated. Correlation coefficients were 0.994-1.000. The samples were digested with HNO3-HF-H2O2. The results showed that Dongjiang river sand contained abundant microelements. The content order is Na>K>Fe>Mg>Mn>Zn>Co>Cu with Na being the highest and Cu the lowest. This paper provides useful evidence for studying the health care effect of Dongjiang river sand on human body.
采用火焰原子吸收光谱法（FAAS）对东江砂中的8种微量元素（锰、铜、锌、铁、钠、钴、镁和钾）进行了检测和分析。该方法简便快速，精密度和准确度良好，能有效消除干扰。计算了回归方程和相关系数，相关系数为0.994 - 1.000。样品采用硝酸 - 氢氟酸 - 过氧化氢消解。结果表明，东江砂中含有丰富的微量元素，含量顺序为钠＞钾＞铁＞镁＞锰＞锌＞钴＞铜，其中钠含量最高，铜含量最低。本文为研究东江砂对人体的保健作用提供了有益依据。
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