11种贝螺肉类27种微量元素的分析测试

采用微波消解法处理贝肉类样品,并用ICP-AES法测定11种贝肉类中的27种微量元素Ca,Mg,K,Na,P,S,Zn,Mn,Fe,Cu,Cr,Co,Se,Sn,Ni,Al,Ti,V,Mo,Ba,Ge,Si,Cd,I,Pb,As和Hg,结果表明：ICP-AES法在测定多种微量元素的仪器方法中显示巨大的优势,11种贝肉类中含有20多种以上微量元素,淡水养殖的贝肉类比海水养殖的钙含量要高得多,有害金属元素主要存在着As和Pb的污染概率。     

气功与微量元素

用原子吸收分光光度计测定了１６名练气功的中老年人发样中的Ｃｕ、Ｚｎ、Ｆｅ和Ｃａ四种元素．发现四种微量元素值均上升．采用组间对照方法．结果是气功组的四种元素的平均值均高于对照组，特别是铁值．其Ｐ值＜０．０５，具有统计学意义．     

微波消解-原子吸收光谱法测定桑叶中微量元素

用微波消解及火焰原子吸收法测定5月,6月,8月,9月及10月等5个时期的桑叶中Fe,Mn,Cu,Zn,Ca 5种元素的含量,同时做精密度和加标回收试验,并对其含量进行比较,以期为临床,药物及食用含量研究开发利用提供参考.测定结果表明,各元素总体含量Ca>Fe>Mn>Zn>Cu,不同时期桑叶中微量元素各不相同,9月的桑叶中,各元素的含量均较高.     

应用电感耦合等离子质谱测定饲料中的微量元素的研究

应用电感耦合等离子体质谱(inductively coupled plasma-mass spectrometry,ICP-MS)测定饲料中铜、锌、铁、锰、铬、镉、铅、砷和硒等微量元素的方法。考察了谱干扰、基体效应和记忆效应等因素对测量的影响。在优化的条件下,方法检出限达到10-9级,线性范围达到3个数量级,线性相关系数高于0.999。将该方法用于实际样品的测定,小麦粉标准品中各元素的测定值与标示量能很好的吻合,配合饲料中微量元素的回收率在86％～115％,相对标准偏差(RSD)≤8.2%(n=6)。预混合饲料中微量元素的含量与国家标准方法测得值能够较好的吻合。该方法与传统方法相比,具有简单快速,灵敏度高,能够同时测定多种元素的优点。     

妊娠晚期羊水中微量元素测定及其与胎儿生长发育关系的研究

对１０２名足月正常妊娠第一胎的产妇妊娠晚期羊水中６种微量元素（锌、铜、锰、铁、钙、镁）首次进行了测定，并通过对出生新生儿生长发育的监测探讨其与胎儿生长发育的关系。妊娠晚期羊水中６种微量元素含量（±Ｓ／×１０－５）分别为：Ｚｎ２．２９±１．７７，Ｃｕ０．１４±０．１４，Ｍｎ０．１３±０．２３，Ｆｅ３．６９±２．７０，Ｃａ８２．５４±７４．１８，Ｍｇ１８．７１±１１．０９．男女新生儿其母羊水中微量元素含量比较无显著差异，Ｐ≥０．０５．与文献报道中期妊娠羊水中所含微量元素比较有增加趋势．６种微量元素相互关系中．与锌、钙呈正相关外，锌与铜、锰、铁、镁呈负相关．低体重组与低身长组新生儿孕母羊水中锌含量明显低于高体重组和高身长组，有显著差异，Ｐ≤０．０１．铁在高身长组含量增高，与低身长组比较有显著差异，Ｐ≤０．０５．锰于低体重组含量升高，与高体重组比较有显著差异，Ｐ≤０．０１．镁与铜于低身长组含量升高，与高身长组比较有显著差异，Ｐ分别≤０．０５与０．０１．可见高铜、高锰、高镁可致胎儿生长发育迟缓．     

微波消解-ICP-AES同时测定维吾尔医药中多种元素含量

为了解维吾尔医药的药效与微量元素之间的关系,用ICP-AES同时测定了5种维吾尔医药中的10种微量元素,用微波消化法处理样品,进行了方法的准确度和精密度试验,方法简便、快速,准确,结果令人满意。     

应用ICP-MS检测转基因大豆油中22种元素含量

随着转基因食品的推广应用,人们越来越关心其营养特性。以转基因大豆油为实验材料,借助于ICP-MS对转基因大豆油中22种元素含量进行了测定。结果显示,七种大量元素含量在0.13～12.52 μg·g-1范围内;15种微量元素在0.15～700.00 ng·g-1之间。大量元素由多到少的顺序是：Ca>Na>K>Mg>Al>P>Si;微量元素中含量最多的五种元素是Zn>Ba>Cr>Fe>Ti。结果说明市场上销售的转基因大豆油,各种营养元素含量可以达到要求,特别是Zn,Ba,Cr,Fe等微量元素含量较高。     

激光气化进样等离子体发射光谱测定锡石中微量元素

采用自动设计、组装的激光气化等离子体发射光谱分析装置，系统地研究了单矿物锡石中２１种元素的蒸发、激发特性。将样品全蒸发输入ＩＣＰ激发，光谱测定，分析结果与经化学分离富集、ＩＣＰ－ＡＥＳ测定结果吻合。     

The application of multielemental analysis in the elaboration of technology of mineral feed additives based on Lemna minor biomass

Supplementation of microelements (Mn, Zn, Cu, Cr) to livestock diet is of particular concern. There are various mineral feed additives available on the market. The most frequently used are inorganic feed additives, characterized with low bioavailability and high toxicity. Also, organic feed additives are used, including amino acids chelates, in which bioavailability was greatly improved and toxicity reduced. The problem is high price of these products. Therefore, there is the need to search for new biological mineral feed additives with designed composition, that would be characterized with high bioavailability, low toxicity, low cost and that would also possess a nutritional value. Such a possibility offers biological materials. It was found that biomaterials have metal-binding capabilities. Metal ions may be bound to biomass via either biosorption or bioaccumulation process.

When elaborating technology of the production of feed additives, containing simultaneously various elements, it is necessary to use the tool of multielemental analysis in order to simultaneously analyze the content of Mn, Zn, Cu, Cr. In the present work, ICP-OES multielemental analysis was used to investigate the process of production of mineral feed additives based on the biomass of aquatic plant Lemna minor. The effectiveness of the processes of biosorption and bioaccumulation of microelements by an aquatic plant L. minor was studied. The mechanism of the process as well as equilibrium was investigated with the use of multielemental analysis by ICP-OES Vista-MPX instrument from Varian (Australia).