ASTM D4629 PDF

More D This test method can be used to determine bound nitrogen in process feeds and may also be used to control nitrogen compounds in finished products. Scope 1. This test method is applicable to naphthas, distillates, and oils containing 0.

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More D This test method can be used to determine bound nitrogen in process feeds and may also be used to control nitrogen compounds in finished products. Scope 1. This test method is applicable to naphthas, distillates, and oils containing 0. This test method has been successfully applied, during interlaboratory studies, to sample types outside the range of the scope by dilution of the sample in an appropriate solvent to bring the total nitrogen concentration and viscosity to within the range covered by the test method.

However, it is the responsibility of the analyst to verify the solubility of the sample in the solvent and that direct introduction of the diluted sample by syringe into the furnace does not cause low results due to pyrolysis of the sample or solvent in the syringe needle.

No other units of measurement are included in this standard. 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. See 6. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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ASTM D4629

More D Данный метод испытаний можно использовать для определения граничного азота в исходном сырье, а также для контроля азотных соединений в готовой продукции. Область применения 1. Данный метод успешно применялся в межлабораторных исследованиях к типам проб, выходящим за указанный диапазон, с помощью разбавления в соответствующем растворителе, чтобы довести концентрацию общего азота и вязкость до диапазона, подпадающего под данный метод. Однако аналитик берет на себя ответственность в отношении поверки растворимости пробы в растворителе и в отношении того, что прямое введение разбавленной пробы с помощью шприца в печь не станет причиной заниженных результатов в результате пиролиза пробы или растворителя в игле шприца. Никакие другие единицы измерения не включены в данный стандарт.

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ASTM D4929

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