速效胃宁冲剂中微量元素锌锰镍的分析

用火焰原子吸收法测定了5批速效胃宁冲剂中锌、锰、镍的含量。结果表明,速效胃宁冲剂中锌含量较丰富,镍较少;其含量由高到低的顺序为：锌＞锰＞镍。探讨了速效胃宁冲剂中微量元素与疗效的关系。     

六种生物制剂中锌、铜、铁、铬、锰、镍含量的测定

利用火焰原子吸收法直接测定生物制剂样品中锌,铜,铁,铬,锰,镍的含量。结果表明,六种生物制剂中以蚂蚁因子注射液中的铜、铜,铁,铬,锰,镍含量最高;不同的生物制剂中六种微量元素的含量有一定差别。     

广西黑老虎中微量元素测定

采用原子吸收光谱法测定广西黑老虎中锰、铁、铜、锌、镁、钙等6种微量元素，并与笋干和16种蔬菜中6种微量元素含量进行比较，结果发现，黑老虎中锰、铁、铜、锌、镁、钙等6种微量元素含量均较高，其中锰、钙、铜、锌含量高于笋干，锰、铁、铜、锌含量远远高于16种蔬菜中微量元素的含量，钙含量高于部分蔬菜含量。提示广西黑老虎中含有丰富的人体所需微量元素，作为药用植物，具有极高的药用价值。     

肺癌患者头发中的微量元素分析

分析了30例肺癌患者头发的19种微量元素，即：锌、铁、铜、钙、锰、镍，铬，钼、镉、铅，年纪最小的33岁，最大的89岁，平均年龄53．3岁，其中男22例，女8例，检测结果：肺癌患者头发微量元素锌、锰明显减低，男性肺癌病人发镍、发铬明显增高，提示肺癌的发生与人体内锌、锰的降低和镍、铬的增高有一定关系。     

十七种香烟中九种金属元素的含量分析

用原子吸收法测定了十七种香烟中锌、铜、铁、锰、铬、镍、钾、钙、镉的含量。结果表明,不同种类香烟中所含九种金属元素有一定的差异,低档香烟所含金属元素的量比高、中档香烟高,烤烟型香烟比外香型香烟低。本结果为烟草的栽培,炮制以及探讨香烟中金属元素对人体危害的研究提供了有用数据。     

火焰原子吸收光谱法分析香青兰中微量元素的溶出特性及化学形态

结合香青兰的药用功效,对其铜、锌、锰、铁、镁、镍6种微量元素的含量和形态进行了分析.分别用0.45 μm滤膜、D101型大孔吸附树脂,将香青兰水煎液中铜、锌、锰、铁、镁、镍分为悬浮态和可溶态、有机态和无机态;并采取正辛醇-水分配体系模拟水煎液中铜、锌、锰、铁、镁、镍在人体胃肠中的分配情况,建立了上述6种元素的4种形态分离分析方法,用火焰原子吸收光谱法测定6种微量元素的含量、分布及其在不同溶剂中的溶出特性和化学形态.结果表明,方法的回收率在92%～106%范围内,相对标准偏差均在3.8%以下,铜、锌、锰、铁、镁、镍是各以某种形态为主的多种形态共存的混杂体系.     

116例冠心病患者血清中10种必需微量元素水平的研究

１１６例冠心病患者血清中１０种必需微量元素的含量与正常值比较，具有如下特点：（１）铁，锌、铬，镍含量升高；２硒钴，钒，钼含量降低；（３）铜和锰差异无显著性。     

原子吸收法测定中药脑心通中微量和宏观元素的含量

采用原子吸收分光光度法测定了脑心通胶囊中钠，钾，钙，镁，铁，铬，锰，镍，镉，铜，锌１１种元素的含量，结果表明，脑心通胶囊中含有较丰富的微量元素，为探讨中药脑心通中微量元素与治疗心脑血管疾病的关系提供了有用的数据。     

原子吸收法测定中药脑心通中微量和宏量元素的含量

采用原子吸收分光光度法测定了脑心通胶囊中钠、钾、钙、镁、铁、铬、锰、镍、镉、铜、锌11种元素的含量。结果表明，脑心通胶囊中含有较丰富的微量元素，为探讨中药脑心通中微量元素与治疗心脑血管疾病的关系提供了有用的数据。     

糖尿病母亲及其新生儿全血14种微量元素的研究

为了解糖尿病母亲及其新生儿全血微量元素的分布情况，采用日本岛津ICPQ－1012型高频等离子体发射光谱仪检测了糖尿病母亲及其新生儿的全血14种微量元素。以正常产妇及足月新生儿病例为对照组，观察糖尿病母亲及其新生儿的全血14种微量元素的改变。结果糖尿病母亲铜元素高于正常产妇，铬、锰、锌元素低于正常产妇，糖尿病母亲新生儿铜元素高于正常新生儿，锌、锰、镁、铬元素低于正常新生儿。糖尿病母亲新生儿镁、镍、铜、锌、钙、钼、锶、铁低于糖尿病母亲。结论：糖尿病母亲血铬、锌、锰元素低于正常，铜元素增高是由于糖尿病疾病所引起，糖尿病母亲新生儿铜元素增高，血镁、钙、锰、锌等低于正常，与糖尿病母亲本身微量元素特点有关。糖尿病母亲新生儿血镁、镍、铜、锌、钙、钼、锶、铁元素低于糖尿病母亲与先天发育不足有关。     

Anion-exchange separation of iron,cobalt and nickel

From 90% acetone-10% 6 M hydrochloric acid medium, cobalt and nickel are strongly adsorbed on the anion-exchange resin Dowex I-X8; iron is not adsorbed and can thus be separated from cobalt and nickel. Cobalt and nickel are then separated by elution with 70% acetone-30% 2 M hydrochloric acid; nickel is eluted before cobalt. The method can be applied to the determination of nickel and cobalt in materials with high iron content such as steels ; compleximetric titrations are used for the final step.     

Extraction-spectrophotometric determination of nickel as Ni-(PAR)2-(CTAB)2 complex in polymetallic sea-bed nodules and steels

A red, water-soluble complex of nickel with PAR can be extracted into chloroform with CTAB at pH 7.0. The system obeys Beer's law upto 0.5 g/ml with a molar absorptivity of 45 200 L·mol^–1·cm^–1 at 540 nm. Job's method of continuous variations revealed that the composition of the extracting species is 1:2:2 for nickel:PAR:CTAB. Based on this extraction, a highly sensitive and selective spectrophotometric method for the determination of nickel in polymetallic sea-bed nodules and in steels, after prior separation of iron and manganese, was developed. The standard deviation was 0.04–0.127 g for 5–25 g of nickel.     

Coprecipitation with yttrium phosphate as a separation technique for iron(III), lead, and bismuth from cobalt, nickel, and copper matrices

The coprecipitation behavior of 44 elements (47 ions because of chromium(III,VI), arsenic(III,V), and antimony(III,V)) with yttrium phosphate was investigated at various pHs. Yttrium phosphate could quantitatively coprecipitate iron(III), lead, bismuth, and indium over a wide pH range; however, 18 ions, including alkali metals and oxo anions, such as vanadium(V), chromium(VI), molybdenum(VI), tungsten(VI), germanium(IV), arsenic(III,V), selenium(IV), and tellurium(VI), were scarcely collected. In addition, 19 ions, including cobalt, nickel, and copper(II), were hardly coprecipitated at pHs below about 3. Based on these results, the separation of iron(III), lead, and bismuth from cobalt, nickel, and copper(II) matrices was investigated. Iron(III), lead, and bismuth ranging from 0.5 to 25 μg could be separated effectively from a solution containing 0.5 g of cobalt, nickel, or copper at pH 3.0. The separated iron(III), lead, and bismuth could be determined by inductively coupled plasma atomic emission spectrometry using internal standardization. The detection limits (3σ, n = 7) of iron(III), lead, and bismuth were 0.008, 0.137, and 0.073 μg, respectively. The proposed method was applied to the analyses of metals and chlorides of cobalt, nickel, and copper.     

火焰原子吸收光谱法连续测定陶瓷绝缘子镀液中的锌、铜、铁

采用火焰原子吸收光谱法进行镉镍电池陶瓷绝缘子镀液中锌、铜、铁含量的连续测定。在优化条件下．该方法灵敏度高，干扰小，选择性和重现性好，步骤简单，操作容易，分析周期短。测定结果的相对标准偏差均小于1．0％，加标回收率为97．0％～99．0％。该法适用于镉镍电池陶瓷绝缘子镀液中锌、铜、铁含量的现场控制分析和样品系统分析。     

微波消解-微波等离子体矩原子发射光谱法测定乳胶管中的铁、钙、镍、镁、锌

本文研究了用HNO3-H2O2微波消解样品,微波等离子体矩原子发射光谱(MPT-AES)测定乳胶管中铁,钙,镍,镁,锌的含量方法。详细考察了测定铁、钙、镍、镁、锌的最佳实验条件,以及介质酸、共存离子的影响。本方法测定铁、镍、镁、钙、锌的检出限分别为77.80、7.55、2.70、275.87、46.23 ng/mL,方法的精密度分别为3.10%、2.19%、2.22%、1.27%、2.90%,线性范围分别为0.08~2 mg/L0、.06~2 mg/L0、.001~3 mg/L、0.005~2 mg/L、0.05~1 mg/L,加标回收率分别在97.7%~107.8%、96.0%~106.7%、98.0%~106.2%、92.3%~108.8%、98.7%~106.8%范围。     

Intra-puff CO and CO2 measurements of cigarettes with iron oxide cigarette paper using quantum cascade laser spectroscopy

The objective of this research was to apply Fourier transform infrared spectroscopy (FTIR) and tunable infrared laser differential absorption spectroscopy (TILDAS) for measuring selected gaseous constituents in mainstream (MS) and sidestream (SS) smoke for experimental cigarettes designed to reduce MS CO using iron oxide cigarette papers. These two complimentary analytical techniques are well suited for providing per puff smoke deliveries and intra-puff evolution profiles in cigarette smoke respectively. The quad quantum cascade (QC) laser high resolution infrared spectroscopy system has the necessary temporal and spectral resolution and whole smoke analysis capabilities to provide detailed information for CO and CO(2) as they are being formed in both MS and SS smoke. The QC laser system has an optimal data rate of 20 Hz and a unique puffing system, with a square wave shaped puff, that allows whole smoke to enter an 18 m, 0.3 L multi-pass gas cell in real time (0.1s cell response time) requiring no syringe or Cambridge filter pad. Another similar multi-pass gas cell with a 36 m pathlength simultaneously monitors the sidestream cigarette smoke. The smoke from experimental cigarettes manufactured with two types of iron oxide papers were compared to the smoke from cigarettes manufactured similarly without iron oxide in the paper using both instrument systems. The delivery per puff determined by the QC laser method agreed with FTIR results. MS CO intra-puff evolution profiles for iron oxide prototype cigarettes demonstrated CO reduction when compared to cigarettes without iron oxide paper. Additionally, both CO and CO(2) intra-puff evolution profiles of the cigarettes with iron oxide paper showed a significant reduction at the initial portion of the 2 s puff not observed in the non-iron oxide prototype cigarettes. This effect also was observed for ammonia and ethylene, suggesting that physical parameters such as paper porosity and burn rate are important. The SS CO and CO(2) deliveries for the experimental cigarettes evaluated remained unaffected. The iron oxide paper technology remains under development and continues to be evaluated.     

Elemental analysis of Cu−Ni and Nd−Al alloys and, nickel and iron powders by energy dispersive X-ray fluorescence (EDXRF) technique

Energy dispersive X-ray fluorescence spectroscopy (EDXRF) has been used for elemental analysis of Cu−Ni alloy, neodymium aluminide, and iron and nickel powder. The preparation of Cu−Ni alloy and neodymium aluminide has been carried out by aluminothermic reduction of mixed oxides of copper and nickel and neodymium oxide respectively. Aqueous electrorefining technique has been followed for the preparation of iron and nickel powder using Fe−Ni alloy as anode. The determination of major and trace elements present in the Cu−Ni and, electrolytically refined nickel and iron has been accomplished by EDXRF using Cd¹⁰⁹ radioisotope source. In the case of Nd−Al alloy Am²⁴¹ radioisotope source has been used. The rapid and multielement analysis of the thermit product by EDXRF has aided in the appropriate variation of the charge constituents during the standardization of the optimum charge composition for Cu−Ni alloy. EDXRF analysis of electrolytically refined nickel and iron revealed heavy contamination of iron in nickel as compared to that of nickel in iron. Neodymium content has been found to be 67.68% in Nd−Al alloy.     

Isomorphous Substitution of Iron and Nickel into Analcime Zeolite

Studies on the effects of iron and nickel incorporation into the hydrothermal synthesis of ANA zeolite were carried out. The presented work reveals that pure Fe‐Al analcime is synthesized by using starting composition with a higher iron(III) content than reported in previous publications. Furthermore, the iron(III) and nickel(II) contents play important roles in the framework of the synthesized zeolite. XRD, FT‐IR spectroscopy, diffuse reflectance UV/Vis spectroscopy, nitrogen adsorption and SEM were used to characterize the synthesized zeolites. These investigations showed that loading of iron and nickel ions in ANA zeolite changes the pore size and morphology of analcime zeolite.