糖尿病患者血清微量元素的含量分析

应用原子吸收分光光度法测定了51例糖尿病患者及43例正常人群血清中微量元素铬、硒、锌、铜、锰的含量。发现糖尿病患者血清铬、硒、锌、锰的含量明显低于对照组(P<0.01);铜含量明显高于对照组(P<0.01)。结果表明体内微量元素铬、硒、锌、铜、锰的含量与糖尿病具有密切的关系。     

人乳的微量元素研究

用日本岛津ＡＡ─６７０型原子吸收分光光度仪以ＡＡＳＦ法对人乳中不同泌乳期的铜、铁、锌、钙、镁、锰、铬七种元素进行了测定，以牛乳为对照组。结果表明：人乳中锌、铜、镁三种元素随着泌乳期的延长其含量逐渐下降；铬、铁两种元素在不同泌乳期中变化不大；锰则随着泌乳期的延长其含量逐渐增加；钙在初乳中的含量明显高于过渡乳，但低于成熟乳。     

硒对大鼠组织中硒、镉、锌、铜、锰含量的影响

本文观察了Ｗｉｓｔａｒ雄性大鼠经口摄入不同浓度的亚硒酸钠液，３周后用原子吸收分光光度法测定肝、肾、脾和睾丸中硒、镉、锌、铜和锰的含量。结果表明：给硒后肝、肾组织中硒的含量随着硒剂量的增加而升高；肝、肾、脾中锌的含量升高，而至１０ｍｇ／Ｌ组锌的含量又下降；肾、脾和睾丸中铜、锰的含量升高，肾、脾中锰含量随硒剂量的增加而降低。     

2型糖尿病患者血清中8种必需微量元素水平研究

１１１例糖尿病患者血清中铁、锌、铜、锰、硒、铬、钴、镍８种人体必需微量元素的含量与对照组比较，显示：（１）血清铁、铜含量增高；（２）血清锌、锰、铬、钴含量降低；（３）硒和镍的含量差异无显著性；（４）可根据上述微量元素变化的特点用于糖尿病的辅助诊断和防治。     

急性脑血管病全血微量元素含量的研究

用火焰原子吸收法及原子荧光法测定９５例急性脑血管病患者全血中锌、铜、硒、铬、镁的含量。结果表明全血中锌、硒、铬、镁含量均降低，锌／铜比值降低，铜增高，与正常对照组比较，有统计学意义（Ｐ＜０．０１）；并且缺血性脑血管病与出血性脑血管病相比较，锌、铜、铬、硒有显著性差异（Ｐ＜０．０１）。     

黄芩不同部位金属元素的含量测定

用原子吸收分光光度法分别测定了黄芩根、茎、叶中１１种金属元素的含量。发现叶、茎中富含镁、铬、镍、铁、钾、锰元素；叶中镁、钾、铬、镍、钴、铁、锰、铅的含量明显高于根中，锌、钼的含量和根中接近；茎中锌、锰、钾、铅的含量远高于根中，钴、镍、铬、钼、铁的含量和根中接近。     

模拟曲线原子吸收光谱法测定人胆结石中13种微量金属元素的研究

近年来胆石症患者普遍增多，对于胆结石中微量金属元素的测定已有了不少报道。本研究采用微量注射进样模拟曲线原子吸收光谱法测定胆结石中铜、锌、铁、锰、钙、镁、铅、镍、钴、铬、镉、锶、铝等13种元素的含量，并对匹配基本溶液模拟曲线的测定条件进行了探讨。方法回收率为95％－103．5％，相对标准偏差小于5％，测定结果满意。1仪器与试剂1．1日立180-80型原子吸收分光光度计1．2可调微量进样器1．3铜、铁、锌、锰、钙、镁、铅、镍、钴、铬、镉、锶、铝的空心阴极灯。1．450％甘油1·5硝酸1．6标准溶液；准确称取铜、铁、锌、锰、钙、镁…     

福建省地产茶叶中微量元素含量的分析

目的了解福建省不同地区不同品种茶叶中铁、锰、铜、锌、钴、硒、铬、镍等微量元素的含量分布,为茶叶种植、茶叶营养及卫生学提供科学依据。方法在福建省主要产茶地和市场随机抽取不同品种茶叶135份,用微波消解-电感耦合等离子体质谱法(ICP-MS)测定样品中微量元素含量。结果茶叶中8种微量元素含量组内变化趋势为锰铁锌铜镍铬钴≈硒,不同品种茶叶中8种微量元素的含量均不全相同,铁观音中锰元素含量最高,功夫红茶中铁、锌、铜和铬元素含量最高,白牡丹中镍元素含量最高,永春佛手中钴元素含量最高,正山小种中硒元素含量最高。闽北地区茶叶中铁、锌、铜、镍的平均含量高于闽南地区,差异均有统计学意义(P0.01),闽南地区的锰高于闽北地区,差异有统计学意义(P0.01),其他元素两地区相当(P0.05)。结论福建省地产茶叶中富含多种微量元素,且不同地区不同品种茶叶中各元素含量存在差异。     

武汉市健康儿童头发与血清中七种微量元素和镁的含量

作者对武汉市210例7～12岁健康儿童头发和血清中锌、铜、铁、锰、铬,硒、镉七种微量元素和镁的含量及其影响因素进行了研究,其中硒采用阴极溶出伏安法测定,其它元素采用原子吸收光谱法。结果表明,发铜男低女高,性别差异显著;发锌和锰与年龄呈显著正相关,发镉则呈负相关,这种年龄差异反映出各年龄对微量元素的需要量不同;学龄期组与学龄前期组和青少年组比较,发锌随年龄增加而增加,发铬和硒随年龄增加而减少。逐步回归分析结果表明,头发和血清微量元素含量之间有一定关系,其中发锌与血清锌呈显著正相关;身高与发锰、发铁和发锌以及体重与血清铜之间存在一定的回归关系,提示这些元素对身高和体重发育有一定影响。     

地杨桃中微量元素含量测定

采用ICP—MS法和原子荧光光度法测定了地杨桃中铁、锌、铜、锰、锶、铬、钴和硒微量元素含量，为对其进行科学研究提供依据。     

急性脑血管病患者头发微量元素测定分析

对１２１例急性脑出血和１４０例急性脑梗塞患者头发进行微量元素铬、硒、铜、锌、镁、锰、铁检测其含量。结果显示急性脑出血与急性脑梗塞组发铬、硒、铜、锌、镁均降低，铬、硒含量脑梗塞组比脑出血组降低更为明显，而脑梗塞组发铁明显低于正常，锰明显高于正常，而脑出血组锰、铁均正常。     

Toxic element concentrations in the Razorbill Alca torda (Charadriiformes, Alcidae) in Portugal

The present study provides the first data on inorganic element levels (As, Cd, Co, Cr, Cu, Hg, Mn, Pb, Se, and Zn) in juvenile, immature, and adult razorbills (Alca torda) collected along the central coast of Portugal. Element concentrations were assessed by ICP-MS in kidney, liver, muscle, and feathers of 28 razorbills, including 4 juveniles, 17 subadults, and 7 adults. The effect of age and tissue on element accumulation was also assessed. The detected levels in razorbills may indicate a possible contamination risk by Hg and Cr. With respect to bird tissues, higher accumulation of Se and Cd was detected in kidney, Zn and Pb in feathers, and As and Mn in liver. Age was found to affect the accumulation of Cd, Cr, Cu, Hg, and Mn, juveniles presenting higher levels of Cu and Mn than older individuals. In razorbill kidney, Zn–Hg constituted the most significant relationship among metal concentrations. Liver presented the highest number of significant relationships (mostly involving Zn and Co). With regard to feathers, the most significant relationships involved Se, Zn, Cr and Cu concentrations. Positive linear relationships were detected among kidney, liver, and muscle, with emphasis on relationships involving Se and Hg, which may be indicative of similar accumulation/regulation mechanisms in those organs. Element concentrations are discussed in view of possible detoxification mechanisms in seabirds.     

猕猴桃属8种植物根部必需元素的含量测定

采用等离子体发射光谱法测定了猕猴桃属８种植物根部中必需元素：Ｍｇ、Ｐ、Ｃａ、Ｚｎ、Ｆｅ、Ｃｕ、Ｍｏ、Ｎｉ、Ｃｒ、Ｍｎ、Ｃｏ的含量,结果表明Ｐ、Ｃａ、Ｍｇ、Ｚｎ、Ｆｅ含量较高,Ｍｏ、Ｍｎ次之,Ｎｉ、Ｃｕ、Ｃｒ、Ｃｏ含量较低     

常、微量元素与胎儿宫内发育迟缓关系的研究

目的 探讨常、微量元素与胎儿宫内发育迟缓(IUGR)间的关系.方法 孕晚期测定71名孕妇母血、脐血、羊水中微量元素水平,其中IUGR组21例,对照组35例,巨大儿组15例.结果 IUGR组母血清Zn,Se,Mn,Fe,Mg,Cr明显低于对照组(P＜0.05);Cd,Pb,Ni水平明显高于对照组;巨大儿组母血清Fe含量亦明显低于对照组(P＜0.05);三组间Ca,Ti,Co,Li无明显差别.IUGR组脐血清Se,Mn,Cd,Fe,Cu,Mg明显低于对照组;Pb,Ni明显高于对照组;三组间Zn,Ca,Ti,Co,Li无明显差别.IUGR组羊水Zn,Se,Mn,Fe明显低于对照组,三组间Ca,Co无明显差别.结论 常、微量元素与胎儿发育关系密切,Zn,Se,Mn,Fe,Mg,Cu,Cr缺乏可致胎儿宫内发育迟缓,Cd,Pb,Ni升高可致低体重儿.     

Potential Toxic Metal Accumulation in Soil,Forage and Blood Plasma of Buffaloes Sampled from Jhang,Pakistan

This study was conducted to determine the concentration of toxic metals in soil, forage and blood plasma of lactating and non-lactating buffaloes in the district Jhang, Punjab, Pakistan. Soil samples were collected from varying distances from the road side. Plasma separation was achieved by centrifugation. The concentration of arsenic (As), selenium (Se), cadmium (Cd), chromium (Cr), iron (Fe), zinc (Zn), copper (Cu) and cobalt (Co) were determined by using Atomic Absorption Spectrophotometer. The results of the study showed that the mean As, Se and Cd concentrations in soil samples were lower while Cr, Fe, Zn, Cu and Co were higher than the official guidelines. In plasma samples, mean concentration values of Co, Zn, Fe, Cd, Se and As were lower while Cu and Cr were higher than the recommended concentrations. According to the results of the study there was no potential exposure of toxicity in buffaloes of the study area.     

冠心病中血糖与血清微量元素间的关系分析

对７５例冠心病患者依血糖水平分两组，进行１２种血清微量元素测定，旨在探讨微量元素与冠心病及糖尿病间的相互关系。结果发现锌、铬、锰、硒、钴元素高血糖组较对照组血清水平为低，呈非常显著差异（Ｐ＜０．０ｌ）；铜、镍元素增高，差异显著（Ｐ＜０．０５）；而锶、铁、砷、铅、铝元素两组间无显著差异（Ｐ＞０．１）。表明部分微量元素与冠心病及血糖间存在着密切联系。     

上海地区7～20岁人群血清微量元素研究

作者检测了上海地区417名7～20岁人群的血清17种微量元素(包括12种必需微量元素)和3种常量元素的含量。其中血清Zn、Cu、Fe、Mn、Cr、Co、Mo、Si、Sn、Ni、V、Ca、P、Mg、Sr、Cd、Pb、Al、Ti共19种元素采用ICAP-9000型等离子体直读光谱仪测定,血清Se由F-78型脉冲极谱仪分析。结果表明,血清Zn、Cu及常量元素等分布比较集中,Cd、Pb、Co、Sr等变异度较大。多数元素与年龄存在相关关系,其中Zn、Fe、Mn、Sr等与年龄呈正相关,Cu、Se、Cr、Pb等则随年龄增长而下降。不同生长发育时期血清多数元素有明显差别,整个人群血清各元素男女间基本一致,但不同时期血清元素有一定性别差异。比较不同地区血清元素的分布,表明市区人群血清Cr、Si、Pb等元素较高,而市郊Cu、Fe、Mn、Sr值较高。     

山楂中微量元素的测定分析

用原子吸收分光光度法测定 5种山楂中的 Zn、Cu、Mn、Fe、Co、Ni、Cd、Pb、Cr、Sr、Ca、Mg、As等 1 3种微量元素 ,为山楂药效的进一步研究和综合开发利用提供了新的科学依据。     

Evaluation of the microelement profile of Turkish hazelnut (Corylus avellana L.) varieties for human nutrition and health

In this study, the levels of boron (B), cobalt (Co), copper (Cu), chromium (Cr), iron (Fe), lithium (Li), nickel (Ni), selenium (Se) and zinc (Zn) microelements in 16 hazelnut samples were determined by inductively coupled plasma mass spectrometry and atomic absorption spectroscopy after microwave digestion, and are discussed for human nutrition and health. Significant differences were observed between the microelement contents of the 16 varieties (P < 0.01). The average microelements concentrations in the varieties varied in the following ranges: B, 13.63-23.87; Co, 0.47-0.82; Cr, 0.22-0.52; Cu, 16.23-32.23; Fe, 31.60-51.60; Li, 0.035-0.042; Ni, 0.58-2.58; Se, 0.96-1.39; and Zn, 22.03-44.03 mg/kg. These results showed that hazelnuts can be an important microelement source for human nutrition and health. According to our trace element data, a daily consumption of 50 g hazelnut can supply easily about 6% for B, 9% for Co, 19% for Fe, 9% for Ni and 16% for Zn of the recommended daily allowance. On the other hand, Se, Cu and Cr levels of 50 g hazelnuts are higher than the respective daily requirements, but slight overdoses of these elements are non-toxic for human health.     

宜昌市土家族地区子宫颈癌组织中7种元素含量的测定

目的 探讨宜昌市土家族地区子宫颈癌患者癌组织、癌旁组织及正常组织中7种元素的含量,为进一步研究提供依据.方法 利用原子吸收光谱法对30例宜昌市土家族地区子宫颈癌患者(病例组)的癌组织和癌旁组织、正常子宫颈组织以及18例其他地区子宫颈癌患者(对照1组)及10例子宫颈良性疾病患者(对照2组)正常子宫颈组织中的镉(Cd)、铅(Pb)、铬(Cr)、锰(Mn)、铜(Cu)、锌(Zn)、硒(Se)进行含量分析.结果 病例组中癌组织、癌旁组织和正常组织中Cd、Pb、Cu、Zn、Se含量的差异均有统计学意义(P＜0.01),Cr、Mn含量的差异无统计学意义(P＞0.05).病例组、对照1组和对照2组正常子宫颈组织中Cr、Mn含量的差异无统计学意义(P＞0.05),3组中Cd、Pb、Cu、Zn、Se含量的差异均有统计学意义(P＜0.01).病例组和对照1组比较,Cd、Se含量的差异有统计学意义(P＜0.01),而Pb、Cu、Zn差异无统计学意义(P＞0.05).病例组和对照2组比较,Cd、Pb、Cu、Zn、Se差异有统计学意义(P＜0.01).对照1组和对照2组比较,Cd、Pb、Cu、Zn、Se差异有统计学意义(P＜0.01).结论 宜昌市土家族地区子宫颈癌患者Cd、Pu、Cu含量升高,Zn、Se含量降低.