正常妊娠与妊高征患者血清中8种必需微量元素水平的研究

７８例正常妊娠妇女和４０例妊高征患者血清中铁、锌、铜、锰、硒、铬、钴和镍的含量与健康未孕妇女比较，正常妊娠妇女和妊高征患者均是铜和锰的含量升高，铁、锌、硒、铬、钴和镍含量降低；妊高征患者与正常妊娠妇女比较，则是铁、铜和锰的含量升高，锌、硒、铬、钴和镍的含量降低。     

正常妊娠与妊高钙患者血清中8种必需微量元素水平的研究

７８例正常妊娠妇女和４０例妊高征患者血清中铁、锌、铜、锰、硒、铬钴和的含量与健康未孕妇女比较，正常妊娠妇女和妊高征患者是铜和锰的含量升高，铁、锌、硒、铬、钴和镍降低；妊高征患者与正常妊娠妇女比较，则是铁、铜和锰的含量升高、锌、硒、铬、钴和镍的含量降降低。     

过敏性哮喘患者血清中10种必需微量元素水平的研究

３４例过敏性哮喘患者血清中铁，锌、铜，锰硒铬，钴镍，钡，钼的含量水平与对照组比较，揭示：（１）铁，铜，铬的含量升高；（２）硒，镍，钴、钒的钼的含量降低；（３）锌和锰的含量差异无显著性，Ｐ〉０．０５。     

脑卒中患者血清中8种必需微量元素水平的研究

１１０例脑卒中患者血清中铁，锌，铜，锰，硒，铬，钴，镍的含量水平与对照组比较，结果显示：１．血清的，铜和铬的含量升高，锌，钴和镍的含量降低，两者之间的差异均有高度显著性，Ｐ〈０．０１；２．血清锰和硒的含量与对照组差异无显著性，Ｐ〉０．０５；３．在临床上述元素含量变化可用于脑座中的辅助诊断和治疗。     

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。     

微量元素与癌症

一、肝癌:肝癌患者体内硒、锌、锰、铁较低,铜、镍、铝升高。二、胃肠癌:胃肠癌患者体内锌、钼、钴等明显降低,铜、镍明显升高。三、食管癌:食管癌患者体内硒、锌、铁、锰、钼、镁等缺乏,铜和铜/锌升高。四、肺癌:肺癌患者体内锰、硒、锌、锶等明显降低,铜、镍、砷含量升高。五     

高血压患者血清中铁锌铜锰硒铬含量的研究

１６５例高血压患者血清中铁，锌，铜，锰，硒，铬的含量与对照组比较，结果显示：１．微量元素铁，锌含量明显升高，而血清铜，铬含量明显降低，其差异均有高度显著性，Ｐ〈０．０１；血清锰和硒的含量，两者差异无显著性，Ｐ〉０．０１．２．上述元素含量的特点可用高血压病的早期预报和治疗。     

肾小球疾病时微量元素代谢的变化

用发射光谱法测定了55倒广州地区居民患肾小球疾病时血清和头发申锌、铜、铁、钴、铬、锰含量，观察对象包括肾病综合征组17例，肾炎组17例，尿毒症组21例．对照组为30例健康人。其年龄、性别构成比、地区与观察组无显著性差异．结果经统计学检验发现肾病综合征组病人血清锌、铜、钴及头发锌、钴含量均明显下降，头发铜无明显变化，肾炎组血清钴、头发钴明显下降，血清锌、铜及头发锌、铜无明显变化。尿毒症组病人血清锌、头发锌、钴显著下降，血清钴、铜及头发铜无明显变化．肾炎组、肾病综合征组及尿毒症组病人血清及头发申铁、铬、锰均无明显变化。     

新生儿脐血清微量元素测定及与生长发育关系研究

应用电感耦合等离子体发射光谱法测定也３３名新生儿脐血清中１７种微量元素（铁、铜、锰、锌、钴、钼、硒、铬、锡、钒、硅、镍、镉、铅、锶、钛、铝）及３种常量元素（钙、磷、镁）的含量。结果表明,新生儿脐血清微量元素性别分布接近,仅女婴血清铬、钒高于男婴,但地区差异明显,城镇新生儿脐血清中锰、锌、锶、钛、钙较高,而钼、硒、铬、铝较低。多元回归分析显示,血清元素铁、锰、锌、硒、硅、锶、钙被引人新生儿体重和发育     

116例冠心病患者血清中铜铬锰钴镍钒含量的探讨

测定了１１６例冠心病患者血清中铜、铬、锰、钴、镍、钒的含量并与正常值比较，显示含量升高才是有铬和镍，降低者有钴和钒、无差异者有铜和锰。     

沈阳市健康人血清中Mg、Zn、Cu、Se、Cr含量及其相关关系探讨

报告了143例沈阳市健康人血清中Mg、Zn、Cu、Se、Cr含量及Cu／Zn值，并指出健康人血清中Mg与Cu量正相关，Mg与Cr呈负相关，Mg与Cu／Zn值呈正相关.Zn与Cr呈正相关.Zn与Cu/Zn呈负相关.Cu与Cr呈负相关。Cu与Cu／Zn值呈负相关.Cr与Cu／Zn值呈负相关.     

Synthesis, characterization and analytical application of a hydroxamic acid resin

A chelating ion-exchange resin with hydroxamic acid functional groups was synthesized from styrene-maleic acid co-polymer cross-linked with divinylbenzene. A resin prepared from equimolar amounts of styrene and maleic anhydride with 0.75 mole% divinylbenzene gives the best sorption characteristics. The selectivity of the resin for metal ions is copper(II) > cobalt(II) > zinc(II) > nickel(II) > manganese(II) > chromium(III) > iron(III) > vanadium(V). Copper(II), chromium(III) and iron(III) in chromium plating baths can be separated by use of the resin and determined spectrophotometrically.     

Determination of transition metal ions in tobacco as their 2-(2-quinolinylazo)-5-dimethylaminophenol derivatives using reversed-phase liquid chromatography with UV-VIS detection

This paper reports the utilization of solid-phase extraction and the reversed-phase high-performance liquid chromatography for the determination of six important transition metal ions: iron, cobalt, nickel, copper, zinc and manganese in tobacco with 2-(2-quinolinylazo)-5-dimethylaminophenol (QADMAP) as chelating reagent. Iron, cobalt, nickel, copper, zinc and manganese ions react with QADMAP to form colored chelates in the medium of acetic acid-sodium acetate buffer solution (pH 4.0). These chelates can be enriched by solid-phase extraction with Waters Sep-Pak-C18 cartridge, and eluted the retained chelates from cartridge with tetrahydrofuran. The chelates were separated on a Waters Nova-Pak-C18 column (150x3.9 mm, 5 microm) by gradient elution with methanol (containing 0.5% of acetic acid) and 0.05 mol/l pH 4.0 acetic acid-sodium acetate buffer solution as mobile phase at a flow-rate of 0.5 ml/min. The detection limits of iron, cobalt, nickel, copper, zinc and manganese are 10, 12, 8, 13, 17 and 22 ng/l, respectively. This method had been applied to the determination of iron, cobalt, nickel, copper, zinc and manganese in tobacco with good results.     

The analysis of copper refinery slimes

Methods are reviewed for the determination of the following constituents of copper refinery slimes: aluminium, antimony, arsenic, barium, bismuth, calcium, cobalt, copper, gold, iron, lead, magnesium, manganese, molybdenum, nickel, platinum metals, selenium, silicon, silver, sulphur, tellurium, tin and zinc.     

Study on Determination of Six Transition Metal Ions in Biological Samples by SPE and RP‐HPLC

This paper reports the utilization of solid phase extraction and the reversed‐phase high‐performance liquid chromatography (RP‐HPLC) for the determination of six transition metal ions (iron, cobalt, nickel, copper, zinc and manganese) in biological samples. The samples were digested by microwave digestion. The iron, cobalt, nickel, copper, zinc and manganese ions in the digested samples can react with 2‐(2‐quinolinylazo)‐5‐diethylaminophenol (QADEAP) to form colored chelates in pH 4.0 acetic acid‐sodium acetic buffer solutions and cetyl trimethylammonium bromide (CTMAB) medium. These chelates were enriched by solid phase extraction with C₁₈ cartridge. Then the chelates were separated on a Waters Nova‐Pak‐C₁₈ column (3.9 × 150 mm, 5 μm) by gradient elution with methanol (containing 0.5% of acetic acid and 0.1% of CTMAB) and 0.05 mol/L pH 4.0 acetic acid‐sodium acetic buffer solution (containing 0.1% of CTMAB) as mobile phase at a flow rate of 0.5 mL/min. The detection limits of iron, cobalt, nickel, copper, zinc and manganese are 3 ng/L, 4 ng/L, 2 ng/L, 4 ng/L, 8 ng/L, 10 ng/L, respectively. This method was applied to the determination of iron, cobalt, nickel, copper, zinc and manganese in biological samples with good results.     

Determination of ppb concentrations of transition metals by radioisotope-excited energy-dispersive X-ray spectrometry

Using ammonium pyrrolidine dithiocarbamate as precipitant and iron as a carrier, ppb concentrations of the following elements were coprecipitated from fresh water: vanadium, chromium, manganese, nickel, copper, zinc, selenium, mercury, and lead. Precipitates were collected on membrane filters then element concentrations were determined using energy dispersive X-ray fluorescence spectrometry. Calibration curves indicate sensitivities ranging from 0.4 ppb for V, Zn, As and Hg to 1.2 ppb for Pb. It is likely that this method of preconcentration can be directly incorporated into field sampling procedures, thus eliminating the problems of sample contamination or trace element losses by absorption on container walls.