-
ASTM E594 for Testing FIDs Used in Gas or Supercritical Fluid Chromatography
ASTM E594 for Testing FIDs Used in Gas or Supercritical Fluid Chromatography10. Dynamic Range10.1 The dynamic range of the detector is that range of mass flow rates of the test substance, over which an incremental change in mass flow rate produces an incremental change in detector signal. The lower limit ...
-
ASTM E594 for Testing FIDs Used in Gas or Supercritical Fluid Chromatography
ASTM E594 for Testing FIDs Used in Gas or Supercritical Fluid Chromatography8. Minimum Detectability8.1 Minimum detectability is the mass flow rate of the test substance in the carrier gas that gives a detector signal equal to twice the noise level and is calculated from the measured sensitivity and ...
-
ASTM E594 for Testing FIDs Used in Gas or Supercritical Fluid Chromatography
ASTM E594 for Testing FIDs Used in Gas or Supercritical Fluid Chromatography7. Sensitivity (Response)7.1 Sensitivity (response) of the FID is the signal output per unit mass of a test substance in the carrier gas, in accordance with the following relationship:where:S = sensitivity (response), A•s/g,Ai ...
-
ASTM E594 for Testing FIDs Used in Gas or Supercritical Fluid Chromatography
ASTM E594 for Testing FIDs Used in Gas or Supercritical Fluid Chromatography6. Noise and Drift6.1 Methods of Measurement:6.1.1 With the attenuator set at maximum sensitivity (minimum attenuation), adjust the detector output with the "zero" control to near mid-scale on the recorder. Allow at least 1/2 ...
-
ASTM E594 for Testing FIDs Used in Gas or Supercritical Fluid Chromatography
ASTM E594 for Testing FIDs Used in Gas or Supercritical Fluid Chromatography4. Significance and Use4.1 Although it is possible to observe and measure each of the several characteristics of a detector under different and unique conditions, it is the intent of this recommended practice that a complete ...
-
ASTM E594 for Testing FIDs Used in Gas or Supercritical Fluid Chromatography
ASTM E594 for Testing FIDs Used in Gas or Supercritical Fluid Chromatography1. Scope1.1 This practice serves as a guide for the testing of the performance of a flame ionization detector (FID) used as the detection component of a gas or supercritical fluid (SF) chromatographic system.1.2 This recommended ...
-
ASTM E800 Guide for Measurement of Gases Present or Generated During Fires
ASTM E800 Guide for Measurement of Gases Present or Generated During Fires12. Analytical Methods Capable of Simultaneous Determination of a Wide Range of Gases12.1 General Comments - With a steady increase in the number of gases deemed important to track for characterizing combustion gas toxicity, techniques ...
-
ASTM E800 Guide for Measurement of Gases Present or Generated During Fires
ASTM E800 Guide for Measurement of Gases Present or Generated During Fires11. Analytical Methods for Water Vapor Analysis11.1 General Comments:11.1.1 Water vapor is often desirable to measure in combustion systems when it is necessary to make chemical stoichiometry calculations, compute elemental compositions ...
-
ASTM E800 Guide for Measurement of Gases Present or Generated During Fires
ASTM E800 Guide for Measurement of Gases Present or Generated During Fires10. Analytical Methods for Total Hydrocarbons and Aldehydes10.1 General Comments:10.1.1 Numerous organic compounds may be generated during pyrolysis and combustion of materials. Identification and quantification of each individual ...
-
ASTM E800 Guide for Measurement of Gases Present or Generated During Fires
ASTM E800 Guide for Measurement of Gases Present or Generated During Fires9. Analytical Methods for Nitrogen Oxides, Sulfur Oxides, and Carbonyl Sulfide9.1 Oxides of nitrogen include nitric oxide (NO) and nitrogen dioxide (NO2). Fire gases contain mostly NO; NO2 formation is usually a secondary oxidation ...
