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DIN EN ISO 2613-1:2023-11
Analysis of natural gas - Silicon content of biomethane - Part 1: Determination of total silicon by atomic emission spectroscopy (AES) (ISO 2613-1:2023); German version EN ISO 2613-1:2023
| Fecha edición: |
2023-11-01
En Vigor
|
|---|---|
| Idiomas disponibles: | Inglés, Alemán |
| Resumen: | This document is applicable to the determination of the total silicon content in gaseous matrices suchas biomethane, biogas and landfill gas. Silicon is present in a gas phase contained predominantly insiloxane compounds, trimethylsilane and trimethylsilanol. The analytical form of the silicon measured inliquid phase after conducted sampling and derivatization procedure is soluble hexafluorosilicate anionstable in slightly acidified media. Total silicon is expressed as a mass of silicon in the volume of theanalysed gas.This document is applicable to all stated gas matrices with silicon concentrations up to 5 mg/m3, and itis prevalently intended for the biomethane matrices containing (0,1 to 0,5) mg/m3. It can be used forhigher concentration but then the absorption efficiency of the bubblers/impingers should be checkedbefore the results can be regarded as valid. The detection limit of the method is estimated as 0,05mg/m3 based on a sample volume of 0,020 m3. All compounds present in the gas phase are volatile atthe absorption and derivatization temperature and gaseous siloxanes are trapped in absorbance mediaand derivatized into analytical silicon specie are measured by this method. The concentration of thesilicon is measured in diluted derivatization media using atomic emission spectrometer uponatomisation/ionisation in microwave or inductively coupled plasma. |
| Keywords: | AES|Analysis|Biogases|Biomethane|Blank samples|Checking equipment|Control samples|Definitions|Determination|Gaseous|Mathematical calculations|Measurement|Measuring techniques|Methods of analysis|Natural gas|Overall dimensions|Portion|Quality control|Sampling methods|Silicon|Silicon content|Siloxane|Testing |
| ICS: | 75.060 - Gas natural |
| CTN: | |
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Equivalencia Internacional |
Idéntica EN ISO 2613-1:2023 Idéntica ISO 2613-1:2023 |
|
Reemplazo Normas |
Reemplaza a DIN EN ISO 2613-1:2022-05 |
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