Distribution and speciation of platinum group elements in environmental matrices

The use of platinum group elements (PGEs) as components of autocatalytic converters attached to motor vehicles has resulted in serious contamination of the environment by Pt, Rh and Pd in nanocrystalline forms. Trace concentrations of PGEs, particularly the major component Pt, in environmental samples have been measured by sensitive instrumental procedures. These data have raised further questions about the nature of Pt species in contaminated soils and in plants grown in them. The focus of attention is changing from accumulations of data expressing total concentrations to investigations of speciation. Application of analytical procedures for research on speciation has provided information concerning transformations of Pt compounds in contaminated soils, the uptake of Pt by plants and the nature of Pt compounds in vegetation. Determination of background levels of precious metals in clinical and environmental matrices has required the development of analytical methods which combine uses of minimal quantities of reagents, and as small a number of chemical operations as possible to yield very low procedural blanks. Sensitive instrumental methods based upon high resolution inductively coupled plasma mass spectrometry and adsorptive stripping voltammetry have proven to be valuable for this work.     

献血员血清中20种元素的ICP-MS测定

用电感耦合等离子体质谱（ＩＣＰ－ ＭＳ） 测定献血员血清中２０ 种元素, 采用多元素内标法校正基体效应引起的系统误差, 加入内标元素Ｓｃ 、Ｉｎ 和Ｔｌ 分别校正质量数＜ １００ 、１００ ～１８０ 和＞ １８０ 的元素测定, 用牛血清标样ＧＢＷ ０９１３１ 为质控标准物质, 检验方法的可靠性。 测定了献血组和健康对照组血清中微量元素含量, 进行数理统计, 检验其差异性。     

头发六种元素含量变化与Graves病关系的研究

为探讨Ｇｒａｖｅｓ病患者头发６种元素含量变化与临床的关系,检测并比较了３２例患者头发中微量元素Ｚｎ、Ｃｕ、Ｆｅ、Ｍｎ和常量元素Ｃａ、Ｍｇ含量。提示Ｇｒａｖｅｓ病人某些临床表现可能与体内元素异常有关。     

部分药、食两用花卉中微量元素含量分析

采用原子吸收分光光度法对部分药、食两用花卉中微量元素进行了分析,并与普通叶菜类进行了对比。     

ICP-AES法测定环境水样中的微量镉铬铜镍铅锌

应用ＩＣＰ－ＡＥＳ法对环境水样中Ｃｄ、Ｃｒ、Ｃｕ、Ｎｉ、Ｐｂ、Ｚｎ等６种微量元素进行直接测定。考察了环境水样中钙、镁离子对的影响。通过对国标样品及实际样品的测定,加标回收实验,建立了简便、快速、准确、稳定、重现性较好的ＩＣＰ－ＡＥＳ法测定环境水样中６种微量元素的分析方法。     

不同品种的黄芪微量元素比较

采用原子吸收光谱测定了商品黄芪、梭果黄芪、金翼黄芪及云南栽培黄芪中Ｃｕ、Ｆｅ、Ｚｎ、Ｍｎ、Ｃａ、Ｍｇ、Ｃｏ、Ａｌ等元素,不同品种的黄芪中微量元素含量均有差异。     

禹粮石微量元素分析

研究了浸泡时间和浸泡温度对禹粮石微量元素浸出量的影响,最佳出度为１００℃,最佳浸同时间为１ｈ。     

血液病与微量元素关系的研究

研究了血液病与微量元素的关系,发现再生障碍性贫血患者治疗前血清Ｃｕ升高（Ｐ〈０．０５）,缓解后Ｃｕ恢复正常。骨髓增生异常综合征（ＭＤＳ）中ＲＡ＋ＲＡＳ组Ｃｕ及Ｃｕ／Ｚｎ比值高,Ｚｎ值降低不明显;ＲＡＥＢ＋ＲＡＥＢ－Ｔ组Ｃｕ及Ｃｕ／Ｚｎ高,Ｚｎ值明显降低（Ｐ〈０．０５）。急性白血病、淋巴瘤、多发性骨髓瘤及慢粒患者血清Ｃｕ、Ｚｎ及Ｃｕ／Ｚｎ比值与对照组比较均呈显著差异（Ｐ〈０．０５￣０．０１）,而缓解     

龋病易感儿童头发微量元素含量的分析

为进一步了解龋病发病机理,探求儿童龋病发生,发展与预防与微量元素含量的关系,收集３￣５周岁儿童患龋组４０名和正常对照组４０名的头枕部近头皮处发样２ｇ／人,用原子吸收光谱法测定头发中锌,铜,铁,锰,铅的含量,结果表明未见五种微量元素与龋病有显著相关,微量元素含量与患龋易感关系有待于进一步研究。     

慢阻肺患者血清中钙镁锌铜硒含量水平的研究

１１６例慢阻肺患者血清中钙、镁、锌、铜、硒的含量与对照组比较。结果提示：（１）血清铜的含量升高,血清钙,锌,硒的含量降低,血清锌的含量差异无显著性;（２）可根据上列元素含量变化的特点进行该病的早期辅助诊断和微量元素的平衡治疗。