Determination of chemical species of iodine in some seaweeds .1.
Determination of chemical species of iodine in some seaweeds .1.
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DOI：
10.1016/s0048-9697(97)00182-4
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发表时间：
1997-10-01
影响因子：
9.8
通讯作者：
Fan, X
中科院分区：
文献类型：
--
作者：
Hou, XL;Chai, CF;Fan, X
采用中子活化分析和化学分离相结合的方法，研究了孔雀石藻、两面针石藻、江豚、马尾藻、竹鞭毛藻和海带7种海藻中碘的化学形态。测定总碘、水溶性碘、可溶性有机碘、I-和IO3-的含量。结果表明，不同藻类中碘的化学形态和含量存在显著差异。海带的碘含量最高，为734 mg/kg(湿基)，其中99.2%为水溶性碘。其他6种藻类的碘含量较低，其中可溶性碘占总碘的16-41%。渗滤液中碘以I-为主，占总水溶性碘的61-93%，有机碘占5.5-37.4%，IO3-含量最低，为1.4%-4.5%。这一结果表明，不同藻类对碘的富集机理不同，其生物有效性也不同。(C)1997年爱思唯尔科学公司。
The chemical species of iodine in seven marine algae Codium fragile, Ulva pertusa, Monostroma nitidum, Gracilaria confervoides, Sargassum Kjellmanianum, Dictyopteris divaricata and Laminaria japonica were studied using neutron activation analysis combined with chemical separation. The contents of total iodine, water-soluble iodine, soluble organic iodine, I- and IO3- were determined. The results indicate that the chemical species and contents of iodine in various algae are remarkably different. The highest iodine content of 734 mg/kg (wet basis) was found in Laminaria japonica, with 99.2% of the total iodine being water soluble. The iodine contents of the other six algae are lower and soluble iodine makes up 16-41% of the total. In the aqueous leachate, iodine is mainly I-, which amounts to 61-93% of total water-soluble iodine; the percentages of organic iodine making up 5.5-37.4%, while the contents of IO3- are the lowest, 1.4-4.5%. This result suggests that the mechanism of iodine enrichment is different for various algae and that its bioavailability varies as well. (C) 1997 Elsevier Science B.V.