猪血红素中微量元素含量的测定

<正> 缺铁性贫血是当今世界上普遍存在的营养缺乏性疾病之一。目前,常用来治疗缺铁性贫血的药物多为硫酸亚铁,但由于服用后胃肠道反应较大,病人很难坚持继续服药。现在,已问世了一种猪血红素离来作为缺铁性贫血的治疗药物,效果十分理想。本文用原子吸收分光光度法(AAS)和荧光分光光度法(FS)对口服原料药猪血红素中的锌、铜、铁、锰、镉、镍、铅、镁和硒的含量进行了测定,     

翻白草14种微量元素的测定与分析

目的 :探讨翻白草中微量元素的含量与降血糖作用的关系。方法 :用原子吸收分光光度法测定了翻白草 14种微量元素的含量。结果 :翻白草钙、钾、镁、锰、铁、锌含量高。结论 :翻白草含有糖尿病患者体内急需的足量的微量 (包括常量 )元素 ,具有降血糖的作用。     

骨肿瘤患者血清组织中微量元素含量研究

瘤患者和３５例健康人对照组血清和组织中微量元素含量。结果提示，骨肉瘤组血清中Ｃｕ、Ｃｕ／Ｚｎ含量比对照组高，Ｚｎ、Ｆｅ、Ｓｅ含量比对照组低；在组织中Ｃｕ、Ｚｎ、Ｆｅ含量高于对照组，Ｃａ含量则低于对照组．上述均有统计学显著性差异（Ｐ＜０．０５～０．００１）。     

马勃中微量元素的测定

用原子吸收法对马勃中的Cu、Zn、Fe、Ca、Mg、Mn、Pb、As、Hg元素进行测定 ,结果表明 :马勃中Cu、Zn、Fe、Ca、Mg、Mn含量极为丰富 ,为马勃的进一步研究和综合利用提供新的依据。     

Effects of harmful trace elements on iron, zinc and copper: their interactions in animals and humans. II. Lead]

Toxic effect of lead is related, among others, to metabolic interactions with essential trace elements i.e. iron, zinc and copper. Lead stimulates urinary excretion of these elements interfering with their reabsorption in kidney as well as inhibits ceruloplasmin activity in plasma, ferrochelatase activity in reticulocytes and copper- and zinc-dependent superoxide dismutase activity in tissues--with all functional consequences for organism. Iron, zinc and copper deficiency results in increased lead toxicity through considerable enhancement of lead absorption from intestinal tract, producing greater degree of anemia as well as decreasing of metalloenzymes activity. Increasing dietary zinc and probably copper suppresses intestinal absorption of lead. The addition of iron, zinc and copper to the diet prevents lead accumulation within the tissues and subsequent toxicity of this element. It seems that increasing intake of food products containing a lot of essential trace elements can diminish risk of lead toxicity for human.     

Neuropsychiatric aspects of trace elements

Our knowledge of trace element metabolism has increased dramatically in the last decade. It now seems likely that many trace elements are of significance either as causative or therapeutic factors in a wide range of illnesses. Several of the most topical elements are discussed here in relation to neurological and psychiatric disorders.     

Neural tube malformations and trace elements in water.

A retrospective case-control study was conducted to test the hypothesis that there is an association between the trace element content of domestic tap water and neural tube malformations in infants. Of 11 elements examined a notable difference was found only for zinc, this being lower in the cases than in the controls. This difference, however, was small and when allowance is made for the total number of statistical comparisons it is compatible with chance fluctuation. From the results of this study, together with the inconsistency of the literature as a whole, it is concluded that trace elements in tap water are unlikely to be of relevance to congenital malformations.     

种植青海椭圆叶花锚中微量元素特征

青海地道中藏药材椭圆叶花锚人工种植试验初见成效。为了对比成熟种子采收前(花果期)和采收后矿物质元素的变化,分别采集种子采收前和采收后的种植青海椭圆叶花锚全植株,采用原子吸收光谱仪分析测试其铜、锌、铁、锰、钴、镍等微量元素含量。结果表明:不同地区种植椭圆叶花锚中微量元素铜、镍元素含量相对稳定;锌、锰、钴、铁等微量元素含量具有地理分布特征。     

A brief history of the influence of trace elements on brain function

From this brief review of history it is evident that lead, mercury, iodine, cobalt, iron, copper, manganese, and zinc have important influences on brain development and function. Identity of thresholds at which effects occur is needed for determination of safe and/or essential levels of these elements in diets. Such knowledge will help define human needs for essential elements, and the hazards of toxic elements.     

ICP—AES法测定大清宝泉饮用水中的微量元素

ICP-AES测定方法简单、快捷、灵敏度高、准确性好、线性范围宽,可以同时测定水样品中的常量元素与微量元素。采用ICP-AES法测定沈阳大清宝泉矿泉水中的微量元素。     

种植青海抱茎獐牙菜中微量元素特征

青海地道中藏药材抱茎獐牙菜人工种植试验初见成效。为了对比成熟种子采收前(花果期)和采收后微量元素的变化,分别采集种子采收前和采收后的种植青海抱茎獐牙菜全植株,采用原子吸收光谱仪分析测试铜、锌、铁、锰、钴、镍等微量元素含量。结果表明:不同地区抱茎獐牙菜成熟种子采收后较采收前铜、铁、钴、镍等元素含量增大。