TML中元的明聚点和ST-1分离性

在拓扑分子格（ＴＭＬ）中引进元的明聚点概念，并讨论了聚点的性质，研究了ＳＴ_-1分离性和ＴＭＬ的明导算子．     

Separateness in Topological Molecular Lattices

ＳｅｐａｒａｔｅｎｅｓｓｉｎＴｏｐｏｌｏｇｉｃａｌＭｏｌｅｃｕｌａｒＬａｔｔｉｃｅｓＬｉＬｅｉ（李雷）（Ｄｅｐｔ．ｏｆＭａｔｈ．，ＨｕａｉｂｅｉＣｏａｌＴｅａｃｈｅｒｓＣｏｌｌｅｇｅ，２３５０００）Ａｂｓｔｒａｃｔ：Ｉｎｔｈｉｓｐａｐｅｒ，ｗｅｄｉｓ...     

TML中良导元运算保并的等价条件

[1]在模糊拓扑空间（fts）中给出了导集运算保并的11个等价条件,本文在拓扑分子格（TML）‘’‘中给出了良导元Dj运算保并的13个等价条件．文中未定义的概念和符号的涵义见文献【2〕－「4」．定义（L（M）,p）是TML,A6L,。6M,e辜A,。是A的良聚点【’：且有PEp（e）?..     

Environmental application of elemental speciation analysis based on liquid or gas chromatography hyphenated to inductively coupled plasma mass spectrometry—A review

In recent years the number of environmental applications of elemental speciation analysis using inductively coupled plasma mass spectrometry (ICP-MS) as detector has increased significantly. The analytical characteristics, such as extremely low detection limits (LOD) for almost all elements, the wide linear range, the possibility for multi-elemental analysis and the possibility to apply isotope dilution mass spectrometry (IDMS) make ICP-MS an attractive tool for elemental speciation analysis. Two methodological approaches, i.e. the combination of ICP-MS with high performance liquid chromatography (HPLC) and gas chromatography (GC), dominate the field. Besides the investigation of metals and metalloids and their species (e.g. Sn, Hg, As), representing “classic” elements in environmental science, more recently other elements (e.g. P, S, Br, I) amenable to ICP-MS determination were addressed. In addition, the introduction of isotope dilution analysis and the development of isotopically labeled species-specific standards have contributed to the success of ICP-MS in the field. The aim of this review is to summarize these developments and to highlight recent trends in the environmental application of ICP-MS coupled to GC and HPLC.