共查询到18条相似文献,搜索用时 125 毫秒
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从化学计量的特点出发,根据测量保证原理的基本要求,简述了化学计量中保证量值准确可靠的几个重要环节的过程控制。 相似文献
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《化学分析计量》2015,(2):4-5
<正>国防科技工业应用化学一级计量站(原国防科工委化学计量一级站)是1986年建于中国兵器工业第五三研究所的专业计量技术机构,同时也是兵器非金属材料理化检测中心、国家进出口商品非金属材料认可实验室、国防计量2501校准实验室、全国化工标准物质委员会标准物质研究开发中心。目前,专门从事化学计量的人员196人。其中研究员人、高级工程师32人。拥有各种分析测试仪器150余台,建有国防计量最高标准30余项。主要承担国防科工委化学计量乖研任务;国防系统化学量值传递,计量标准的考核、复查、人员培训;国防大型试验基地现场计量保证;标准物质的研制、定值、发放;进出口非金属材料检验:化学产品测试及未知样品的剖析等。先后完成计量科研课题40余项,有20余项达到巨 相似文献
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《化学分析计量》2014,(6):4-5
<正>国防科技工业应用化学一级计量站(原国防科工委化学计量一级站)是1986年建于中国兵器工业第五三研究所的专业计量技术机构,同时也是兵器非金属材料理化检测中心、国家进出口商品非金属材料认可实验室、国防计量2501校准实验室、全国化工标准物质委员会标准物质研究开发中心。目前,专门从事化学计量的人员196人,其中研究员15人、高级工程师32人。拥有各种分析测试仪器150余台,建有国防计量最高标准30余项。主要承担国防科工委化学计量科研任务;国防系统化学量值传递,计量标准的考核、复查、人员培训;国防大型试验基地现场计量保证;标准物质的研制、定值、发放;进出口非金属材料检验;化学产品测试及未知样品的剖析等。先后完成计量科研课题40余项,有20余项达到国 相似文献
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介绍了国防科工委化学计量一级站为保证化学量值的准确与统一,在计量标准建立、标准物质研制、测定量方法研究等方面所做的工作和经验。 相似文献
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Bernard King 《Accreditation and quality assurance》2001,6(6):236-243
To facilitate just and sound decisions legal measurements must be reliable. The aim of this paper is to explore how this is
currently achieved and how it might be better done. It considers the different types of legal proceedings, the role of chemical
measurement, level of proof, the different types of chemical measurement, measurement units, the role of government, the chemical
measurement industry and its control, legal metrology and the development of a measurement system based on metrological principles.
It is argued that recent developments provide the basis for a robust support system, that but more needs to be done. It is
also argued that the conventional approach to legal metrology has little place in chemical measurement, but that some controls
are needed in some areas. In particular, a harmonised approach to international measurement standards is advocated.
Received: 29 December 2000 Accepted: 8 January 2001 相似文献
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Current developments in Germany for establishing a traceability system for chemical measurements are reported. The focus is on a dissemination mechanism which employs chemical calibration laboratories accredited within the framework of the German Calibration Service (DKD) and acting as "multipliers" between the national standards level and the user level by providing the user with calibration means which are traceable to the SI via national standards. At the national standards level, a network of high-level chemistry institutes coordinated by the national metrology institute, PTB, provides the primary references for chemical measurements.The use of the metrological dissemination system provided by the DKD also for chemical measurements is a logical extension of a traceability mechanism, successful for more than two decades in general metrology, to metrology in chemistry. In detail, traceability structures in clinical chemistry, electrochemistry, elemental analysis and gas analysis are described. This system has become an important part of the efforts made in Germany to support chemical laboratories in meeting the traceability requirements of the market and of legal regulations. 相似文献
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Reliable measurements are essential to guarantee all aspects required for the sustainable development of nations. There is
an increasing awareness of the need to discuss, compare and improve infrastructures in the context of global economic efficiency,
and market access for goods and services for both developed and developing countries. This is where metrology, standardization
and conformity assessment come in. In order to further develop these activities, countries have been organizing themselves
into regional cooperation groups. The Inter-American Metrology System (SIM) brings together the National Metrology Institutes
of all 34 OAS member countries, aiming at the further development of a sound metrological basis, what lays in the basis of
the technical infrastructure necessary for the sustainable development. In this paper the goals and objectives of SIM and
some of its main projects will be analyzed, emphasizing the initiatives of chemical metrology and of quality management systems
in the region. 相似文献
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G. Price 《Accreditation and quality assurance》1996,1(2):57-66
National measurement systems are infrastructures to ensure, for each nation, a consistent and internationally recognised
basis for measurement. Such complex systems have historical, technical, legal, organisational and institutional aspects to
connect scientific metrology with practical measurements. Underlying any valid measurement is a chain of comparisons linking
the measurement to an accepted standard. The ways the links are forged and the etalons (measurement standards) to which they
connect are defining characteristics of all measurement systems. This is often referred to as traceability which aims at basing
measurements in common measurement units – a key issue for the integration of quantitative chemical analysis with the evolving
physical and engineering measurement systems. Adequate traceability and metrological control make possible new technical capabilities
and new levels of quality assurance and confidence by users in the accuracy and integrity of quantitative analytical results.
Traceability for chemical measurements is difficult to achieve and harder to demonstrate. The supply of appropriate etalons
is critical to the development of metrology systems for chemical analysis. An approach is suggested that involves the development
of networks of specialised reference laboratories able to make matrix-independent reference measurements on submitted samples,
which may then be used as reference materials by an originating laboratory using its practical measurement procedures.
Received: 31 July 1995 Accepted: 19 August 1995 相似文献
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J. A. Pérez-Bustamante 《Analytical and bioanalytical chemistry》1997,357(2):151-161
The historical evolution of Analytical Chemistry is briefly discussed as related to the progress of Chemistry within the
16–19th centuries under the leadership of Paracelsus, Boyle, Lavoisier and Dalton. A clear distinction is made between chemical
analysis (up to the end of the 19th c.) and today’s Analytical Chemistry, paying close attention to a number of aspects and
consequences related to the chemical revolution which took place at the overlap of the 18–19th c. which resulted in the quantification
of Chemistry, causing increasing development and improvement of the chemical metrology which was an essential factor for Chemistry
to acquire a scientific dimension and to become more specialised during the 19th century. A panoramic view of the whole development
is presented by resorting to the inclusion of a number of synoptical tables outlining the stepwise progress of Chemistry,
chemical analysis and Analytical Chemistry within the five last centuries taking into consideration the main protagonists
involved as well as the experimental means, techniques and methodologies used and/or developed.
Received: 20 February 1996 / Accepted: 21 May 1996 相似文献
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Jichuan Huo Shuyong Zhang Yaxian Zhu Gongke Li Yi Yang Menglong Li Yuzhi Wang Lansun Zheng 《大学化学》1986,35(10):11-16
The background of the establishment of "chemistry metrology and technology" as an emerging engineering education major based on chemistry is analyzed. Based on the national development strategy, aiming at the urgent demand of interdisciplinary talents for the rapid development of chemistry metrology and technology, the necessity of setting up the major of "chemistry metrology and technology" based on chemistry is demonstrated. Based on the investigation of professional talents in instrument development enterprises and application fields, some suggestions on the program of "chemistry metrology and technology" major including orientation, objectives, graduation requirements and professional training are provided. Some requirements of the curriculum, teaching staff and teaching conditions are put forward. 相似文献