EN
SR EN ISO 6978-1:2005
Gaz natural. Determinarea conţinutului de mercur. Partea 1: Eşantionarea mercurului prin chemosorbţie pe iod
ISO 6978-1:2003 specifies a method for the determination of total mercury content in natural gas using a sampling method at pressures up to 40 MPa by chemisorption on iodine impregnated silica gel. This sampling method is suitable for the determination of mercury contents within the range of 0,1 microgram/m3 to 5 000 micrograms/m3 in natural gas. This method is applicable to sampled gas volumes containing less than 20 mg hydrogen sulfide and less than a total liquid hydrocarbon condensate of 10 g/m3 under the sampling conditions. The collected mercury is determined by measuring the absorbance or fluorescence of mercury vapour at 253,7 nm.
Status :
In vigoare
Data aprobării : 30.11.2005
Data publicării : 02.12.2005
Număr de pagini : 24
ICS : 75.060 Gaz natural
Comitet tehnic : 357 - Gaze naturale şi analiza gazelor
- Inlocuieste SR ISO 6978:2003