几种鲍壳中锌(Ⅱ)、锰(Ⅱ)、镁(Ⅱ)、铜(Ⅱ)的测定

Determination of Zn^(2+)、Mn^(2+)、Mg^(2+)、Cu^(2+) in some Abalone Shell

鲍壳具有明目的作用,可以用于制备视力保健品,这需要测定鲍壳中有益成分Zn2+、Mn2+、Mg2+、Cu2+。采用仪器普及常用的分光光度法和准确快速的EDTA络合滴定法,分析了鲍壳中Zn2+、Mn2+、Mg2+、Cu2+的含量。对四种不同的鲍壳中的Zn2+、Mn2+、Mg2+、Cu2+二价金属离子展开定量测定,制作了离子测定的标准曲线,得到了理想的结果。经实验测定,四种鲍壳中的Zn2+、Mn2+、Mg2+、Cu2+金属离子的平均含量为7.0、2.5、200、2.0 mg/kg。为我们开展鲍壳的综合利用课题提供了一定的数据参考。

Abalone shell benefits people＇s eyes, and can be used to make eye-care products, thus it is necessary to determinate the useful ingredient Zn2＋、Mn2＋、Mg2＋、Cu2＋.The instrument-common speetrophotometry and accurate speedy EDTA titration have been used to determine Zn2＋、Mn2＋、Mg2＋、Cu2＋ in abalone shell. We determined the volume of Zn2＋、Mn2＋、Mg2＋、Cu2＋ made their calibration curves, and got a reasonable result. The experiment showed that Zn2＋、Mn2＋、Mg2＋、Cu2＋ in abalone shell is 7.0, 2.5, 200, 2.0 mg/kg respectively. The result gives reference to our making use of abalone shell.