标准物质在商检分析实验室中的应用

介绍了标准物质在商检分析实验室的质量管理和实验室认可工作中的应用。     

国外分析实验室动态

当前分析实验室的根本任务是 :既要保证分析质量足以满足客观的需要 ,即所谓“适用性”(fit forpurpose) ;又要贯彻环境保护的要求 ,严格执行“谁污染环境、谁负责净化”的方针。难点在于化学试剂总是具有污染环境的性质 ,有些是致癌性的 (如联氨也有致癌性的最新报道 ) ;有些是破坏人体内分泌系统的 (如表面活性剂壬酚、增塑剂邻苯二甲酸丁苄酯等 ) ;有些甚至是剧毒的 (如马钱子碱 )。但要在实验室内部进行封闭式的自我净化处理确实是非常艰巨的工作。目前美国的 IBC先进工艺公司、加拿大的Fluor Daniel Wright公司、智利的 Tec Pro Mi…     

分析实验室的环保措施

环境保护是头等大事 ,事关可持续发展经济的大战略。在环保面前人人平等 ,必须本着“谁污染环境 ,谁负责处理”的原则贯彻执行。分析试验室的成本核算和对外收费都应包括实验室的环保费用在内 ,实验室的污染源既来自所用的各种试剂 ;也可能来自试样本身 (例如 ,固态试样的放射性和液态或气态试样的有毒或致癌物质成分 )。因此 ,只能根据具体情况 ,分别制订处理方案 ,并无定规。必须指出 :当前某些标准方法仍保留使用有毒、甚至剧毒的试剂 ,绝不意味着 ,分析实验室可以无视环保政策 ,置身局外 ,自行其是 ,而是它另有一套环保措施 ,不过秘而不…     

美国第15届分析实验室经理协会年会概况

美国分析实验室经理协会(Analytical Inboratory Managers Assodahon,简称为ALMA)于1980年召开第一次会议,当时只有大学的的分析实验室经理参加,第二年才扩大为包括政府、大学和各种企业的分析实验室经理都参加的会议.年会定在每年的十月中、下旬召开.     

国外分析与生化分析实验室动态

1生物分析和研究用的消毒清洁剂 1．1简介和用法 从事生物分析和研究用的容器或其他工具必须防止其表面受到细菌、霉菌和病毒的污染。这也是最重要的清洁工序，忽略这点不仅影响分析和研究结果，而且可能引起工作人员受到细菌或病毒的感染。在实验室中感染非典病毒便是一例。     

分析实验室布局安排中容易忽视的几个问题

对分析实验室安排布局中常见的几个问题所带来的潜在危害和危害原因进行了分析讨论,并根据实际提出了建议.     

计算机在化学实验室自动化管理方面的应用

介绍了计算机技术在化学实验室自动化管理方面的应用动态,包括国内外在实验室信息自动化管理系统（LIMS）、实验室化学药品与材料管理系统（MIS）和实验室设备维护与校正管理系统（IMCS）的最新进展,以及上述计算机系统在实验室自动化管理方面的特点和作用。     

Neural Networks in Chemistry

The capabilities of the human brain have always fascinated scientists and led them to investigate its inner workings. Over the past 50 years a number of models have been developed which have attempted to replicate the brain's various functions. At the same time the development of computers was taking a totally different direction. As a result, today's computer architectures, operating systems, and programming have very little in common with information processing as performed by the brain. Currently we are experiencing a reevaluation of the brain's abilities, and models of information processing in the brain have been translated into algorithms and made widely available. The basic building-block of these brain models (neural networks) is an information processing unit that is a model of a neuron. An artificial neuron of this kind performs only rather simple mathematical operations; its effectiveness is derived solely from the way in which large numbers of neurons may be connected to form a network. Just as the various neural models replicate different abilities of the brain, they can be used to solve different types of problem: the classification of objects, the modeling of functional relationships, the storage and retrieval of information, and the representation of large amounts of data. This potential suggests many possibilities for the processing of chemical data, and already applications cover a wide area: spectroscopic analysis, prediction of reactions, chemical process control, and the analysis of electrostatic potentials. All these are just a small sample of the great many possibilities.     

乳清酸分析方法的研究进展

综述了近年来乳清酸分析方法的研究进展,内容包括紫外-可见分光光度法、荧光分析法、电化学分析法、色谱分析法、色谱-质谱联用法和量热法等几个方面,展望了乳清酸分析方法的发展方向.     

Distinguished People and Places Important in the History of Portuguese Analytical Chemistry

The people and places of importance in the history of chemistry in Portugal have been reviewed with particular reference to analytical chemistry.     

Analytical chemistry in Belgium: an historical overview

The people, places and political influences of importance in the history of chemistry in Belgium have been reviewed with particular reference to analytical chemistry. Correspondence: D. Thorburn Burns, The Science Library, The Queen’s University of Belfast, Belfast, BT9 5AG Northern Ireland, UK     

Clinical Laboratory Reference Networks

The Centers for Disease Control and Prevention, or CDC, has a long history of providing traceability in clinical laboratory medicine. Early work was to develop reference methods for important clinical analytes. When the National Cholesterol Education Program issued recommendations for physicians and clinical laboratories for measurement of lipids and lipoproteins, CDC formed the Cholesterol Reference Method Laboratory Network (CRMLN) to provide manufacturers with access to the accuracy bases. The CRMLN assists manufacturers with calibration of diagnostic products to ensure traceability to higher-order technology. A certification program for manufacturers assures the clinical laboratory community that these products are accurate and precise. The CRMLN model for traceability has been applied to other networks, notably the National Glycohemoglobin Standardization Program.Presented at the CCQM Workshop on Traceability, 16–17 April 2002 at the BIPM, Sèvres, France     

Computer simulations in zeolite chemistry

Summary Recent developments in molecular modelling techniques have provided us with a new and powerful tool for the simulation and better understanding of the complex chemistry of zeolites. The range of applications include cation distributions, acid strengths of catalytic sites, intergrowth phenomena, derivation of new structures, molecular adsorption and selective diffusion of organic molecules through zeolite frameworks. A perspective summary of a number of simulation methods and their specific areas of applicability is given in this article.     

杯芳烃衍生物在分析化学中的应用

杯芳烃衍生物是以杯芳烃为“分子平台”，经过不同的衍生化而得。根据杯芳烃的空腔大小，构象及其衍生官能团与客体分子间的适应程度，杯芳烃衍生物可实现对金属离子及有机分子的选择性识别。本文介绍了芳烃衍生物在分析化学领域，包括萃取分离，液膜分离，色谱分析及光分析中的应用情况。     

Computer Graphics in the Study of Metal Cluster Compounds

Polynuclear carbonylmetal compounds provide convenient molecular analogues for the reactions occurring at metal surfaces during catalytic processes. Many properties of these cluster compounds are determined by the type and distribution of the ligands covering the metal polyhedral surface. Computer simulated space-filling models of these complicated molecules provide readily assimilated information about the arrangement of surface ligands, and in many cases lead to conclusions not readily deduced from other approaches.