期刊论文

中文

食品与发酵工业

0253-990X

2008

34

9

146-149

本校为其他机构

建立了螺旋藻预富集一火焰原子吸收光谱法测定干制品浸出液中的痕量铜的方法，讨论了螺旋藻的预处理方法、用量、颗粒大小、洗脱剂类型、洗脱剂浓度、洗脱流速、pH值等对干制品中痕量铜富集效果的影响。结果表明，在交换柱内径为0．8cm．柱高为15cm、螺旋藻用量为2g、pH值6的条件下，干制品浸出液流速为10mL／min时，用0．6mol／LHCl以6mL／min的速度洗脱，可对Cu~(2＋)进行高效富集。用该方法测定几种干制品中的痕量铜，当n=6时，SD为0．00002～O．00009，RSD为2．5％～4．2％，特征浓度为0．059μg／L，加标回收率为97％～103％。

A simple and sensitive method was developed for the determination of trace copper in enriched dry spiral algae by Flame Atomic Absorption Spectrometry. The impacts of the pretreatment method, dosage and grain size of spiral algae, and eluant type , its concentration and flow speed as well as pH value on the enrichment of traced copper was discussed. Results demonstrate that the Cu^2＋ （copper ions） can be concentrated effectively under the following condition： exchange column internal diameter 0.8cm and 15cm high, the dosage of spiral algae ...