ICP-AES法同时测定茶叶中的锌、铁、锰、铜、镍、镁

研究了用硝酸＋硫酸＋高氯酸消解样品，用ICP－AES法同时测定茶叶中锌，铁，锰，铜，镍，镁的新方法，在选定的最佳条件下，测锌，铁，锰，铜，镍，镁的检出限分别为4．2，7.8,0.4,7.3,7.6,4.8ng.mL^-1，回收率为94．7％－104．2％，RSD为0．3％－4．7％，该法准确，快速，简便，适用于茶叶样品的测定，结果令人满意。     

富氧－乙炔原子吸收法测定野生白刺果汁上浮物中微量矿物元素的研究

本文介绍了利用火焰原子吸收分光光度法对宁夏野生白刺果汁上浮物中的铜、锌、铁、锰、钾、钠、钙和镁含量进行的研究工作。白刺果汁上浮物经湿消解法处理后，用原子吸收法测定。方法简单、快速，具有灵敏度和精密度高，选择性好，试剂消耗量小等优点。本法测定铜、锌、铁、钙、钾、钠、钙和镁的回收率均在９１．１～１０７．２％范围之间。变异系数均不超过５．３％。结果满意。     

富氧—乙炔原子吸收法测定野生白刺果汁上浮物中微量矿物元素的研究

本文介绍了利用火焰原子吸收分光光度法对宁夏野生白刺果汁上浮物中的铜，锌，铁，锰，钾，钠，钙和镁含量进行的研究工作。白刺果汁上浮物经湿消解法处理后，用原子吸收法测定。方法简单，快速，具有灵敏度和精密度高，选择性好，试剂消耗量小等优点。本法测定铜，锌，铁，锰，钾，钠，钙和镁的回收率均在９１．１－１０７．２％之间，变异系数均不超过５．３％。结果满意。     

原子吸收分光光度法测定利心丸中钙、镁、铁、锰、铜、锌的含量

本文采用原子吸收分光光度法测定利心丸中钙、镁、铁、锰、铜、锌六种元素的含量。结果表明,利心丸中含有较为丰富的钙、镁、铁、锰、铜、锌元素,宏量元素含量,钙＞镁,微量元素含量,铁＞锌＞锰＞铜,尤以铁的含量最为丰富。本实验结果为探讨中成药利心丸中钙、镁、铁、锰、铜、锌的含量与治疗心血管疾病的关系提供了有用的数据。     

微波消解-ICP-OES测定滇杨中的矿质元素

采用微波消解法消解样品,利用电感耦合等离子体-发射光谱法(ICP-OES)测定滇杨中的矿质元素.方法的RSD为0.5％-3.8％,加标回收率为96.7％-104.4％,表明该方法有良好的精密度和准确度.用该法对滇杨样品中的钙、镁、铁、锌、钾、锰、磷、硼、铜、钠、硅等11种矿质元素进行测定,发现铜含量明显偏低,不能达到植...     

ICP-AES法测定中国梨木虱分泌物中的元素

本文叙述了用电感耦合等离子体发射光谱法直接测定中国梨木虱分泌物中的钙,镁,锌,铜,铁、钡等多种元素。方法简便,可靠,具有良好的精密度和准确性,相对标准偏差为１．８％－５．８％,回收率为９４％－１０５％。     

野生葛不同部位铜、锌、铁、钙、镁含量测定

用硝酸、高氯酸混合酸消解样品,采用原子吸收光谱法,测定了河南大别山区野生葛不同部位即葛根、葛藤、葛叶及花蕾中铜、锌、铁、钙、镁的含量,并对其结果进行了分析。结果显示：葛根、葛藤、葛叶及葛花中含有丰富的宏量元素钙、镁和有益的微量元素铜、锌、铁。铜的分布量依次为：叶〉花蕾〉葛藤〉葛根;锌的分布量依次为：叶〉花蕾〉葛藤〉葛根;铁的分布量依次为：葛根〉葛藤〉叶〉花蕾;钙的分布量依次为：叶〉葛根〉花蕾〉葛藤;镁的分布量依次为花蕾〉葛根〉叶〉葛藤。测定结果为探讨中草药中宏量、微量元素与治疗心脑血管疾病功效的关系提供了有用的数据;测定结果还显示：葛叶中铜、锌、钙含量居其他部位含量之首,适宜大力开发葛叶产品。     

火焰原子吸收光谱测定头发中的锌、铁、钙、镁

本文研究了头发中锌、铁、钙、镁微量金属元素的火焰原子吸收分光光度法的测定。方法简便，省时，具有良好的精密度和准确度。相对标准偏差分别为锌２．９％、铁１．９％、钙１．３％、镁３．４％。     

ICP－AES法测定富锗酵母中微量元素

本文采用美国ＬｅｅｍａｎＬａｂｓ公司中阶梯光栅光谱仪测定了人工培养的富锗酵母中高含量锗及镁、铜、锌、铁、钾、钠等微量元素，研究了富锗样品的前处理方法，样品加标回收率在９０％－１０３％之间，测量相对标准偏差：锗１０％，镁、铜、锌、铁、钾、钠等元素小于７％。     

火焰原子吸收法测定人胸水中铜,锌,铁含量的研究

本文用火焰原子吸收光谱法研究测定了人（肺结核、肺癌）胸水中铜、锌、铁。测定肺结核胸水２１例，该胸水中铜、锌、铁含量平均值分别为０．７１±０．０８ｍｇ／Ｌ，４．７８±０．１８ｍｇ／Ｌ，３．２２±０．１５ｍｇ／Ｌ。肺癌胸水２１例，其胸水铜、锌、铁含量为０．９８±０．０９ｍｇ／Ｌ，３．８０±０．１６ｍｇ／Ｌ，５．３５±０．２１ｍｇ／Ｌ。该方法的回收率为９５．２１％－１０５．５４％。相对标准偏差小于４．８４％。     

Gitterpositionsbestimmung von Fremdatomen in Granaten mit Hilfe des Channeling

Foreign Atom Location in Garnets Using the Channeling Technique Using the particle channeling technique the lattice sites of Magnesium and Zircon (octahedral sites) in Gadolinium Gallium Garnet (GGG) and the lattice sites of Bismuth and Lead (dodecahedral sites) in Bi-substituted Yttrium Iron Garnet (YIG) were determined. In comparison the channeling behavior of protons in undoped GGG has been investigated.     

Structural,optical and electrical properties of post annealed Mg doped ZnO films for optoelectronics applications

Mg _x Zn_1-x O films with 0.15 mole composition of Magnesium were successfully deposited by the spin coating sol–gel method. Zinc acetate dihydrate and Magnesium acetate were used as starting precursors to prepare the solution in ethanol solvent. The MgZnO films were deposited on microscopic glass substrates and post annealed at three different temperatures. X-ray Diffractometer (XRD), Scanning Electron Microscopy (SEM) and UV–VIS Spectrophotometer were used to characterize the deposited films for studying structural and optical properties. Energy dispersive analysis by X-ray (EDAX) was used to determine incorporation of Mg content in ZnO films. XRD spectrum reveals that, the deposited Mg doped ZnO films were polycrystalline in nature. The intensity of c-axis in the XRD spectrum goes on decreasing as Mg composition slightly increasing corresponding to increase in annealing temperature. EDAX spectra clearly showed the incorporation of Mg into the ZnO films. Semiconductor characterization system was used for the I–V characterization of MgZnO films. I–V characteristics show decrease in current as increase in the biased voltage. Optical band gap of MgZnO films was found to be increased from 3.2 to 3.38 eV as estimated from the absorption coefficients.     

Vibrational spectroscopy of bio-molecules: an algebraic approach

Porphyrins have received numerous considerable attentions during recent years because of their great biological importance. The most interesting areas of current research in molecular spectroscopy are the study of the vibrational ground and excited states of polyatomic molecules especially for the Metalloporphyrins. In this paper, we have calculated the fundamental and extrapolated vibrational energy levels of Magnesium, Nickel, Copper, Zinc, Metalloporphyrin molecules using U (2) algebraic model Hamiltonian. The results obtained by this method are in good agreement with the experimental data. This study gives a general approach for solving the vibrational spectra of Metalloporphyrin molecules.     

ICP-AES法测定刺槐花中铁、锰、锌、铜

使用PTFE高压密封消化罐,用ICP－AES法同时测定刺槐花中Fe,Mn,Cu,Zn元素,回收率均在96－106％之间,相对标准偏差在7．9％以下,结果令人满意。     

新资源食品中微量元素测定方法的研究

用硝酸-高氯酸消解样品,用火焰原子吸收光谱法测定新资源食品葛根、葛花、四叶参、仙人掌、菊花、小麦胚和蚕蛹中Cu,Zn和Fe元素的含量,并对其结果进行了分析。结果显示： 在选定的实验条件下,测定方法的回收率为94.66%～105.24%,测定Cu,Zn和Fe的精密度RSD分别为1.79％,0.71%和4.78%。建立的原子吸收光谱法简便、快速、灵敏、准确。经F检验与SNK检验,河南省新资源食品葛根、葛花、四叶参、仙人掌、菊花、小麦胚和蚕蛹中微量元素Cu,Zn和Fe含量分别为： 铜的分布量依次为: 菊花≈蚕蛹＞葛花≈小麦胚≈四叶参≈葛根＞仙人掌,锌的分布量依次为： 仙人掌＞蚕蛹≈葛花≈葛根≈小麦胚≈四叶参≈菊花;铁的分布量依次为： 蚕蛹≈菊花≈葛根＞葛花≈小麦胚≈四叶参≈仙人掌。     

ICP—AES法测定铁矿中铝,钙,镁,锰,钴,铜,钠和钾

本文研究了ICP-AES法测定铁矿中铝,钙、镁、锰、钴、铜、钠和钾的方法。对仪器工作参数,共存元素的光谱干扰和基体效应干扰进行了探讨。采用向标准系列中加入铁基空白溶液建立工作曲线,试样经酸处理后即可直接测定。本方法获得了良好的回收率(95～103%)和变异系数(0.5～1.3%,n=11),同原子吸收法进行比对试验,结果一致。     

ICP-AES测定高含量锌、镉和铜

采用ICP-AES测定高含量锌、镉和铜,选择了最佳仪器工作条件和样品处理方法。在实验优选条件下,对铜镉渣中铜的含量为8%—12%;镉的含量为35%—38%;锌的含量为21%—23%进行了测定。回收率分别为铜99.8%—100.0%,镉98.3%—99.9%,锌99.3%—99.5%。     

火焰原子吸收法连续测定氧化锑中铅、铜、铁含量

确立了火焰原子吸收测定氧化锑中铅、铜、铁含量的方法,探讨了样品的前处理、酸度、及共存元素的干扰情况,确定了各元素测定的最佳条件,回收率在95.4％-112.1％之间,精密度RSD%不大于5.9％,该方法能满足氧化锑中铅、铜、铁元素的测定。     

Adsorption of Zn(II) and Cd(II) ions onto magnesium and activated carbon composite in aqueous solution

Magnesium and coconuts shell activated carbon composite was prepared to selectively remove heavy metals ions in aqueous solution. Zinc(II) and cadmium(II) ions were used to clarify the adsorption capacity of the composite in comparison with no magnesium containing activated carbon. Influence of the initial heavy metal concentration, time course and solution temperature on the adsorption amounts were examined for the two adsorbents, and surface chemistry of the adsorbents was also characterized using Boehm titration. The magnesium composite adsorbed greater amount of Zn(II) and Cd(II) ions than the no magnesium counterpart. The adsorption amount of Cd(II) was not influenced with rise in solution temperature for the composite, whereas decrease in adsorption was observed for the counterpart. The loaded magnesium was estimated to be combined with carbon surface via oxygen bridge. Cadmium(II) was adsorbed onto the composite surface by ion exchange process with releasing equivalent amount of Mg(II) from the carbon surface, while Zn(II) would adsorb onto the composite by not only the ion exchange, but also the electrostatic interaction with the Cπ electrons on the graphite surface from the experimental results.