悬浮液进样-火焰原子吸收光谱测定芹菜中的锌铁锰铜

不使用稳定剂,直接用蒸馏水制成芹菜样品的悬浮液,用SrCl2消除相关干扰,在磁力搅拌下进样,应用标准曲线法在同一溶液中利用空气——乙炔火焰原子吸收光谱法测定Zn、Fe、Mn、Cu等4种元素含量。结果表明,芹菜中含有丰富的Zn以及Fe、Mn、Cu。本文考察了方法的准确度和精密度。试验表明,在选定的条件下,芹菜中各元素间相互不干扰,可在同一份制备液中进行4种元素的分别测定。方法的加标回收率在90.0%~102.0%之间,相对标准偏差在0.21%~0.77%之间(n=3)。测定结果与高温灰化法一致,t检验表明两者无显著性差异。     

食用菌中Cu、Mn、Fe、Zn含量的测定

采用火焰原子吸收法测定洛阳地区11种栽培食用菌中Cu、Mn、Fe、Zn的含量,旨在指导人们调节膳食结构,同时也为食用菌产品的开发利用和深加工提供科学依据。测定结果表明,食用菌中含有丰富的微量元素,是不可多得的营养补品,也是值得开发的保健食品,大量种植将会有更加广阔的市场前景。     

藏药材麻花艽中铜锌铁锰含量分析

采用ICP-AES法对青海省内采集的麻花艽中的铜、锌、铁、锰的含量进行了测定。结果表明,麻花艽中四种元素含量丰富,各部位含量差异较大,其中基部茎部含量较高,入药部位根部次之,为以后的开发利用提供了基础数据。     

不同产地麦冬中锌、铜、锰、铁的比较研究

采用火焰原子吸收法测定了不同产地麦冬中锌、铜、锰和铁的含量,比较了不同产地麦冬中w(Zn)/w(Cu)比值。结果表明,湖北麦冬的w(Zn)/w(Cu)比值最高,浙江麦冬和四川麦冬的w(Zn)/w(Cu)比值接近,从微量元素的角度来看,湖北麦冬的品质优于其它产地。     

中药微量元素锌,铜,铁,锰的研究

简介了微量元素的概念及进行中药微量元素研究的重要意义，回顾了近十多年来中药微量元素锌，铜，铁和锰的研究概况，引用参考文献３３篇。     

五种中草药中七种元素含量测定研究

用火焰原子吸收法对五种中草药中K，Ca,Mg,Cu,Zn,Fe,Mn进行了测定，结果表明，这些元素与中药的药理作用有相关性。     

Determination of Cu, Fe, Mn, and Zn in blood fractions by SEC-HPLC-ICP-AES coupling

The binding of Cu, Fe, Mn, and Zn to proteins in blood and in blood fractions was investigated, since their interactions in free radical metabolism in humans is of great interest. An HPLC-ICP-AES technique was developed allowing adequate separation of metalloproteins and of inorganic and organic metal species. For the separation of metalloproteins in erythrocytes and blood plasma a Merck Superformance Fractogel EMD BioSEC 650 (S) column was used. Size exclusion chromatography (SEC)-HPLC was hyphenated to ICP-AES both on-line and off-line for the detection of trace elements in the fractions resulting from HPLC separations. HPLC parameters, pH, temperature, flow rate and salt concentration were optimized for the protein separation and the optimal conditions were applied for the hyphenation to the ICP-AES detector. The separation column was calibrated with five standard proteins. For the element determination by ICP-AES a line selection with respect to the sensitivity was performed. Three different methods were used for the determination of trace elements in blood: direct determinations, on-line and off-line SEC-HPLC-ICP-AES measurements. For the optimizing experiments blood samples of one female subject were used. The direct determination by ICP-AES of the elements was performed in blood and blood fractions of ten different subjects to obtain the average concentration ranges. From the results the identification of the protein Cu/Zn superoxide dismutase in erythrocytes was possible. The LOD were 0.03 microgram mL-1 for Cu, 0.026 microgram mL-1 for Fe, 0.8 ng mL-1 for Mn, and 0.09 microgram mL-1 for Zn in a synthetic blood matrix.     

利用FAAS法测定利水渗湿类中草药中锌、铁、铜、锰含量

采用火焰原子吸收分光光度法(FAAS)测定了6种利水渗湿类中草药(茯苓、泽泻、苡仁、茵陈、猪苓、革薢)中锌、铁、铜、锰4种微量元素的含量.采用浓的HNO3+HClO4(4+1,v/v)混合酸消解样品,对测定结果进行了准确度和精密度评价,其加标回收率在92.3%～109.0%之间,相对标准偏差(RSD)不大于2.31%.测定结果表明:6种中草药中都含有丰富的微量元素,其中Cu含量相对偏低.     

Application of neutron activation analysis to evaluate the health status of equines by means of Cu, Fe, Mn and Zn determinations in their hair

Instrumental neutron activation analysis (INAA) was applied to evaluatethe clinical status of equines, belonging to the Military Police of SoPaulo State, by means of Cu, Fe, Mn and Zn determinations in their hair. Comparisonof the results obtained in these analyses with reference values indicatedZn deficiency in the equines, Fe is in the minimum limit and the elementsCu and Mn are within the normal range.     

皮肤病患者血清中铁锌铜锰硒钴含量的研究

１１６例皮肤病患者血清中铁,锌,铜,锰,硒,钴的含量与对照组比较。显示：（１）铁和铜的含量明显升高,硒和钴的含量明显降低,它们之间的差异有高度显著性,Ｐ〈０．０１;锌含量亦降低,两者之间的差异有显著性,Ｐ〈０．０５;锰的含量,两者差异无显著性,Ｐ〉０．０５。（２）可根据上述元素的变化特点,对皮肤病进行早期诊断和治疗。     

微波消解-火焰原子吸收光谱法测定饲料中铁铜锰锌

铁、铜、锰和锌是饲料中重要的营养元素,其含量的测定已有标准方法,该法虽有较高的灵敏度,但分析时间冗长,试样的灰化就需16h,很难满足批量样品测定的需要。本文采用微波技术消解饲料样品,用火焰原子吸收光谱法测定铁、铜、锰和锌的含量,方法快速、灵敏、准确、操作简便。试样前处理仅需0．5h,节省了分析时间,应用于样品的分析,结果满意。     

微波消解-微波等离子体炬原子发射光谱测定啤酒中的铜、锌、铁、锰、硒、锶

建立了微波消解-微波等离子体炬原子发射光谱(MPT-AES)法测定啤酒中微量元素。考察了微波前向功率、工作气流量、载气流量等参数,确定了MPT-AES法测定各元素的最佳实验条件。在该条件下铜、锌、铁、锰、硒、锶的检出限分别为7ng.mL-1、46ng.mL-1、13ng.mL-1、8ng.mL-1、1.2ng.mL-1、5.6ng.mL-1。相对标准偏差(RSD)均在0.9%～4.8%之间,线性范围分别为0.1～100μg.mL-1、0.5～100μg.mL-1、0.5～100μg.mL-1、0.1～100μg.mL-1、0.01～10μg.mL-1、0.05～100μg.mL-1,加标回收率均在96%～110%之间。     

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。     

X射线荧光光谱薄膜法测定多金属矿样中常量Pb,Zn,Cu,Fe,Mn

本文拟定了一个Ｘ射线荧光光谱薄膜测定常见铅、锌、铜、锰矿中０．２～ｘｘ％Ｐｂ、Ｚｎ、Ｃｕ、Ｆｅ、Ｍｎ的方法。实验考察了制片重现性和样品分解可靠性对本法结果的关键性影响，采用酸溶、钒作内标、Ｍｙｌａｒ膜制片测量。手续简便、方法精密度和准确性符合有色地质分析质量要求。     

厌食症患儿血清中铁锌铜锰硒含量的研究

１３７例厌食症患称血清中铁、锌、铜、锰、硒的含量对照组比较,研究结果揭示：①微量元素铁和铜含量明显升高,而锌、锰和硒含量明显降低,两者之间差异均有高度显著性,Ｐ〈０．０１;②临床上可根据上述元素改变的特点用于厌食症的早期辅助诊断和元素的平衡治疗。     

免疫力低下患者血清中铁锌铜锰硒含量的研究

１３４例免疫力低下患者血清中铁、锌、铜、锰、硒的含量与对照组比较,结果揭示：①铁和铜的含量升高。两者差异有显著性或高度显著性;锌、锰和硒的含量均明显降低,两者差异有高度显著性。②可根据上列元素变化的特点,对免疫力低下者进行早期诊断和防治。     

广东地区儿童全血铅、锰、锌、铜、铁参考区间的调查分析

微量元素检测受到多种因素的影响,其正常参考区问的建立也显得非常复杂。为建也广东地区儿童全血铅、锰、锌、铜、铁的参考区间,通过规范化的样本采集、检测过程中严格的质量控制、科学的统计方法,对来自广东地区的4968份样本进行了调查分析。分析结果表明,除全血铁外,儿童全血铅、锰、锌、铜的值呈偏态分布;广东地区绝大部分儿童全血铅水平仍处在相对安全的水平;全血锰参考值范围与大多数文献不一致,可能与工业污染有关;实验室的全血锌参考区间整体低于一般实验室,可能与使用去除了微量元素的专用采样管有关。     

Fractionation and speciation of Cu,Zn and Fe in wine samples by atomic absorption spectrometry

A scheme is presented for fractionation of wine components and Fe, Cu and Zn determination in different fractions. The charge of the metal species was established using cation and anion exchange separation based on solid phase extraction. The resin XAD-8 was used for the separation of wine polyphenols in complexes with wine proteins and polysaccharides. Dowex ion exchange resins were used for the separation of cationic and anionic species of Fe, Cu and Zn. Flame atomic absorption spectrometry and electrothermal atomic absorption spectrometry were used off-line for the quantitative determination of metals in the different fractions obtained.