共找到 34 条与 质谱仪、液谱仪、能谱仪及其联用装置 相关的标准,共 3 页
本规范适用于四级杆电感耦合等离子体质谱仪主要性能指标的校准。其他类型的电感耦合离子体质谱仪的校准可以参照执行。
Calibration Specification for Quadrupole Inductively Coupled Plasma Mass Spectrometers
Настоящий стандарт распространяется на ЯМР-анализаторы, предназначенные для измерений показателей качества (масличности и влажности) се
State system for ensuring the uniformity of measurements. NMR-analyzers for determination of oiliness and moisture of agricultural materials. Verification procedures
X-ray spectrometry - X-Ray Emission- and X-ray Fluorescence analysis (XRF) - Part 2: Definitions and basic principles for measurements, calibration and evaluation of results; additional information and examples of calculation
本标准规定了四极质谱计的要求、试验方法、检验规则、标志、包装、运输、贮存等。 本标准适用于以真空系统中作残余气体分析为主的四极质谱计。
Specifications of quadrupole mass spectrometer
The document specifies basic principles and general terms for X-ray emission- and X-ray fluorescence analysis (XRF).
X-ray spectrometry - X-ray emission- and X-ray fluorescence analysis (XRF) - Part 1: Definitions and basic principles
The document specifies definitions and basic principles for measurements, calibration and evaluation of results of X-ray emission- and X-Ray Fluorescence Analysis (XRF).#,,#
X-ray spectrometry - X-ray emission- and X-ray fluorescense analysis (XRF) - Part 2: Definitions and basic principles for measurements, calibration and evaluation of results
ASTM standard gas chromatographic methods for the analysis of petroleum products require calibration of the gas chromatographic system by preparation and analysis of specified reference mixtures. Frequently, minimal information is given in these methods on the practice of calculating calibration or response factors. Test Methods D2268, D2427, D2804, D2998, D3329, D3362, D3465, D3545, and D3695 are examples. The present practice helps to fill this void by providing a detailed reference procedure for calculating response factors, as exemplified by analysis of a standard blend of C6 to C11 n-paraffins using n-C12 as the diluent. In practice, response factors are used to correct peak areas to a common base prior to final calculation of the sample composition. The response factors calculated in this practice are “multipliers” and prior to final calculation of the results the area obtained for each compound in the sample should be multiplied by the response factor determined for that compound. It has been determined that values for response factors will vary with individual installations. This may be caused by variations in instrument design, columns, and experimental techniques. It is necessary that chromatographs be individually calibrated to obtain the most accurate data.1.1 This practice covers a procedure for calculating gas chromatographic response factors. It is applicable to chromatographic data obtained from a gaseous mixture or from any mixture of compounds that is normally liquid at room temperature and pressure or solids, or both, that will form a solution with liquids. It is not intended to be applied to those compounds that react in the chromatograph or are not quantitatively eluted. Normal C6 through C11 paraffins have been chosen as model compounds for demonstration purposes. 1.2 The values stated in SI units are to be regarded as the standard. The values stated in inch-pound units are for information only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Standard Practice for Calculation of Gas Chromatographic Response Factors
ASTM standard gas chromatographic methods for the analysis of petroleum products require calibration of the gas chromatographic system by preparation and analysis of specified reference mixtures. Frequently, minimal information is given in these methods on the practice of calculating calibration or response factors. Test Methods D 2268, D 2427, D 2804, D 2998, D 3329, D 3362, D 3465, D 3545, and D 3695 are examples. The present practice helps to fill this void by providing a detailed reference procedure for calculating response factors, as exemplified by analysis of a standard blend of C6 to C11 n-paraffins using n-C12 as the diluent. In practice, response factors are used to correct peak areas to a common base prior to final calculation of the sample composition. The response factors calculated in this practice are “multipliers” and prior to final calculation of the results the area obtained for each compound in the sample should be multiplied by the response factor determined for that compound. It has been determined that values for response factors will vary with individual installations. This may be caused by variations in instrument design, columns, and experimental techniques. It is necessary that chromatographs be individually calibrated to obtain the most accurate data.1.1 This practice covers a procedure for calculating gas chromatographic response factors. It is applicable to chromatographic data obtained from a gaseous mixture or from any mixture of compounds that is normally liquid at room temperature and pressure or solids, or both, that will form a solution with liquids. It is not intended to be applied to those compounds that react in the chromatograph or are not quantitatively eluted. Normal C6 through C11 paraffins have been chosen as model compounds for demonstration purposes.1.2 The values stated in SI units are to be regarded as the standard. The values stated in inch-pound units are for information only.1.3This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Standard Practice for Calculation of Gas Chromatographic Response Factors
It is important to recognize that the results obtained by this test method or any other test method for particle size determination using different physical principles may disagree. The results are strongly influenced by physical principles used by each method of particle size analysis. The results of any particle sizing method should be used only in a relative sense and should not be regarded as absolute when comparing results obtained by other methods. Both sellers and purchasers of chromatography media will find the test method useful if mutually acceptable to all parties concerned to determine the particle size distributions for materials specifications, manufacturing control, and development and research.1.1 This test method is valuable for the measurement of particle size and covers determination of the particle size distribution of chromatography media in the overall size range of approximately 1 to 450 956m using the electric sensing zone (ESZ) apparatus. This instrument uses an electric current path of small dimensions that is modulated by individual particle passage through an aperture and produces individual pulses of amplitude proportional to the particle volume (1).sup2 1.2 The values stated in SI units are to be regarded as the standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Standard Test Method for Particle Size Distribution of Chromatography Media by Electric Sensing Zone Technique
1.1 This test method is valuable for the measurement of particle size and covers determination of the particle size distribution of chromatography media in the overall size range of approximately 1 to 450 956m using the electric sensing zone (ESZ) apparatus. This instrument uses an electric current path of small dimensions that is modulated by individual particle passage through an aperture and produces individual pulses of amplitude proportional to the particle volume (1).sup2 1.2 The values stated in SI units are to be regarded as the standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Standard Test Method for Particle Size Distribution of Chromatography Media by Electric Sensing Zone Technique
Replaces one sentence in sub-clause 7.4.1 (page 55) and the Figure 15a (page 94).
Standard test procedures for semiconductor X-ray energy spectrometers; amendment 1
Настоящий стандарт устанавливает номенклатуру основных показателей качества на анализаторы масс-спектрометрические, включаемых в ТЗ на
Product-quality index system. Mass-spectrometric analysers. Index nomenclature
Gas analysis by mass spectrometry. Determination of gas chemical composition.
General principles of pulsed Fourier transform electromagnet nuclear magnetic resonance spectroscopy
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