几种常见水果的微量元素分析

运用原子吸收分光光度法测定了几种常见水果中部分微量元素含量。其中榴莲的Mg、Zn、Cu、K含量位于四种水果之首。美国提子中Ca含量最高，芒果中Fe含量最高。以上差别具有统计学意义。六种元素的回收率为90％-106．5％。连续6次测定样品，变异系数(CV)为0．96％。     

褐云玛瑙螺的微量元素分析

采用等离子体发射光谱法(ICP—AES)对褐云玛瑙螺进行了12种微量元素的测定分析。结果表明，褐示玛瑙螺体内含有丰富的人体必需微量元素Fe、Se、Cu、Zn、V、B、Ca等。为深入研究开发利用褐云玛瑙的药用功能和营养价值提供了科学依据。     

大肠杆菌有限生长的微量热及非线性动力学研究

The finite growth of Escherichia coli was studied by using a LKB 2277 BioActivity Mollitor. We found that the finite growth is a nonliear dynamic process. The nonlinear dynamic behaviour in the finite growth process and the nonlinear dynamic models describing the process were discovered and established. The curve of logistic map corresponding to the finite growth thermogram of Escherichia coli was obtained and the nonlinear dynamic parameters were calculated by means of a computer. Moreover, we also discussed the nonlinear dynamic characters of Escherichia colt in its finite growth process.     

氢化物－气相色谱的元素光度检测器

研究开发的一种新型的元素光度检测器主要用于锗、砷、锡和锑的氢化物气相色谱检测，具有高灵敏，高选择性。它是在普通火焰光度检测器的基础上加装了特制的滤光片改制而成的。对锗、砷、锡和锑的检测限分别为３．０×１０￣（－１１）ｇ、７．０×１０￣（－１１）ｇ、７．０×１０￣（－１０）ｇ和１．１×１０￣（－８）ｇ，相对标准偏差分别为１．８％、２．４％、２．６％和３．０％。     

恩施来凤藤茶微量元素的分析及其保健功能探讨

用原子吸收光谱法等方法测定TN茶及常用绿茶中Fe、Cu、Zn、Ca、Mg、Se、Mn、Co、K、Na、F、I的含量，发现藤茶中Fe、Cu、zn、Mg、Mn、Se、Na、F及I的含量比常用绿茶高。并根据测定的结果探讨了藤茶的保健功能。     

小儿佝偻病血中微量元素的观察

对７１例确诊为不同阶段的佝偻病患儿同时进行观察血液中微量元素锌、铜、铅以及血清钙、磷、碱性磷酸酶的变化。结果表明，佝偻病组的血铸、血钙、血磷均低于正常组，血铅、ＡＫＰ高于正常组，血铜则两组无大差异，但铜／锌比值正常组为０．２２±０．６３明显低于佝偻病组０．３６±０．５５，ｔ＝３．２０，Ｐ＜０．０５．各期佝偻病微量元素的变化与正常儿对比，在佝偻病的初期血磷略低于正常，血锌明显减少，碱性磷酸酶升高。在疾病的激期钙、磷、锌明显低于正常，碱性磷酸酶及铅升高，恢复期各元素基本恢复正常。     

金属配合物高效液相色谱法测定人发和血清中锌,钴,铜的含量

选用8-羟基喹啉为配合剂，经柱前衍生后高效波相色谱法分离测定，建立了人发和血清中微量元素锌、钴、铜的含量测定方法，该法配合产物稳定性好，标准曲线的线性范围锌、铜均为0．8～4．0mg／L，钴为0．1～2．0mg／L，相关系数均0．999以上，批内、批间相对标准偏差均小于5％，加样回收率锌为（100．3±0.47）％，钴为（98．9±2．07）％，铜为（100.9±0．65）％。     

白血病骨髓移植病人全血微量元素铜的变化及其意义

为了研究白血病骨髓移植病人全血微量元素铜的变化及其意义 ,用原子吸收光谱法检测了正常对照组与白血病骨髓移植患者预处理前及移植后骨髓空虚期全血微量元素铜的含量。结果表明 ,正常对照组全血铜浓度与白血病骨髓移植患者预处理前全血铜浓度差异无显著性 (P >0 0 5 ) ,而与骨髓空虚期全血铜浓度有显著性差异 (P <0 0 5 ) ,说明白血病缓解后血铜接近正常对照组水平 ,而白血病骨髓移植患者预处理后骨髓空虚期全血铜含量高于正常对照组 ,说明预处理影响微量元素铜的代谢 ,本文就其影响机理进行了研究     

Local and non-local sources of airborne particulate pollution at Beijing--The ratio of Mg/Al as an element tracer for estimating the contributions of mineral aerosols from outside Beijing

A new element tracer technique has firstly been established to estimate the contributions of mineral aerosols from both inside and outside Beijing. The ratio of Mg/Al in aerosol is a feasible element tracer to distinguish between the sources of inside and outside Beijing. Mineral aerosol, inorganic pollution aerosol mainly as sulfate and nitrate, and organic aerosol are the major components of airborne particulates in Beijing, of which mineral aerosol accounted for 32%―67% of total suspended particles (TSP), 10%―70% of fine particles (PM2.5), and as high as 74% and 90% of TSP and PM2.5, respectively, in dust storm. The sources from outside Beijing contributed 62% (38%―86%) of the total mineral aerosols in TSP, 69% (52%―90%) in PM10, and 76% (59%―93%) in PM2.5 in spring, and 69% (52%―83%), 79% (52%―93%), and 45% (7%―79%) in TSP, PM10, and PM2.5, respectively, in winter, while only ～20% in summer and autumn. The sources from outside Beijing contributed as high as 97% during dust storm and were the dominant source of airborne particulates in Beijing. The contributions from outside Beijing in spring and winter are higher than those in summer, indicating clearly that it was related to the various meteorological factors.