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3.1 This test method is used to measure the surface area of precipitated, hydrated silicas that is available to the nitrogen molecule using the multipoint (B. E. T.) method. 3.2 Solids adsorb nitrogen and, under specific conditions, the adsorbed molecules approach a monomolecular...
3.1 This test method is used to measure the surface area of precipitated, hydrated silicas that is available to the nitrogen molecule using the multipoint (B. E. T.) method. 3.2 Solids adsorb nitrogen and, under specific conditions, the adsorbed molecules approach a monomolecular...
1.1 This practice covers testing the performance of a nitrogen/phosphorus thermionic ionization detector (NPD) used as the detection component of a gas chromatographic system. 1.2 This practice applies to an NPD that employs a heated alkali metal compound and emits an electrical...
1.1 This test method covers the manual determination of nitrogen dioxide (NO 2 ) in the atmosphere in the range from 4 to 10 000 g/m3 (0.002 to 5 ppm(v)) when sampling is conducted in fritted-tip bubblers. 1.2 For concentrations of NO 2 in excess of 10 mg/m3 (5 ppm(v)), as occur in...
1.1 These test methods cover the determination of mass fraction % of carbon, nitrogen, and oxygen in silicon nitride powder having chemical compositions within the following limits: Element Mass Fraction % Range Carbon 0.05 to 5.0 Nitrogen 30 to 45 Oxygen 0.1 to 1.5 1.2 Two test...
1.1 This practice covers testing the performance of a nitrogen/phosphorus thermionic ionization detector (NPD) used as the detection component of a gas chromatographic system. 1.2 This practice applies to an NPD that employs a heated alkali metal compound and emits an electrical...
This test method is used to measure the surface area of precipitated, hydrated silicas that is available to the nitrogen molecule using the multipoint (B. E. T.) method. Solids adsorb nitrogen and, under specific conditions, the adsorbed molecules approach a monomolecular layer. The...
1.1 This practice is intended to serve as a guide for testing the performance of a nitrogen/phosphorus thermionic ionization detector (NPD) used as the detection component of a gas chromatographic system. 1.2 This practice applies to an NPD that employs a heated alkali metal compound...
1.1 This practice is intended to serve as a guide for testing the performance of a nitrogen/phosphorus thermionic ionization detector (NPD) used as the detection component of a gas chromatographic system. 1.2 This practice applies to an NPD that employs a heated alkali metal compound...
1.1 These test methods cover procedures for the continuous determination of total nitrogen dioxide (NO2) and nitric oxide (NO) as NOx, or nitric oxide (NO) alone or nitrogen dioxide (NO2) alone, in the ranges shown in the following table: Range of Concentration Gas Ambient...
This practice covers testing the performance of a nitrogen/phosphorus thermionic ionization detector (NPD) used as the detection component of a gas chromatographic system. This practice applies to an NPD that employs a heated alkali metal compound and emits an electrical charge from...
This document specifies a spectrophotometric method for the determination of nitrogen in steel. The method is applicable to the determination of nitrogen mass fraction between 0,000 6 % and 0,050 % in low alloy steels and between 0,010 % and 0,050 % in high alloy steels. The method...
This test method is used to measure the surface area of precipitated, hydrated silicas that is available to the nitrogen molecule using the multipoint (B. E. T.) method. Solids adsorb nitrogen and, under specific conditions, the adsorbed molecules approach a monomolecular layer. The...
1.1 This test method covers the determination of total nitrogen (organic and inorganic) in aromatic hydrocarbons, their derivatives and related chemicals. 1.2 This test method is applicable for samples containing nitrogen from 0.2 to 2 mgN/kg. For higher nitrogen concentrations...
1.1 These test methods cover procedures for the continuous determination of total nitrogen dioxide (NO2) and nitric oxide (NO) as NOx, or nitric oxide (NO) alone or nitrogen dioxide (NO2) alone, in the ranges shown in the following table: Range of Concentration Gas Ambient...
This International Standard specifies a spectrophotometric method for the determination of the nitrogen content of non-alloy and low-alloy steels. This method allows the determination only of the nitrogen content which can be converted to an ammonium salt.
This method is for determining basic organic nitrogen in petroleum distillates. This method may be applied to both colored and clear samples with no difficulty. The range of detection for petroleum distillates is from 0.0001 to 1.0 mass-% nitrogen, while for viscous materials, such as...
These test methods cover the determination of mass fraction % of carbon, nitrogen, and oxygen in silicon nitride powder having chemical compositions within the following limits: Element Mass Fraction % Range Carbon 0.05 to 5.0 Nitrogen 30 to 45 Oxygen 0.1 to 1.5 Two test methods...
1.1 This test method covers the determination of total nitrogen (TN) and total dissolved nitrogen (TDN) in surface water, seawater, groundwater, wastewater, and wastewater effluents in the range from 0.2-10 mg/L N. Concentrations from 10-500 mg/L are possible when used in conjunction...
This method is for determining combined nitrogen in liquefied petroleum gas (LPG). The method determines all nitrogen compounds that are extractable by aqueous acid, including ammonia, amines, nitriles and amides. The method is particularly useful for LPG samples containing...
