Standard Swedish standard · SS-EN ISO 6978-1:2005

Natural gas - Determination of mercury - Part 1: Sampling of mercury by chemisorption on iodine (ISO 6978-1:2003)

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Standard Swedish standard · SS-EN ISO 6978-1:2005

Natural gas - Determination of mercury - Part 1: Sampling of mercury by chemisorption on iodine (ISO 6978-1:2003)
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Scope
This part of ISO 6978 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 µg/m3 to 5 000 µg/m3 in natural gas. This method is applicable to sampled gas volumes containing less than 20 mg hydrogen sulfide (absolute content) 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.
NOTE ISO 6978-2 gives a sampling method suitable for the determination of mercury content of pipeline natural gas by amalgamation of mercury on gold/platinum alloy thread at atmospheric pressure for the range of mercury from 0,01 µg/m3 to 100 µg/m3 and for sampling at high pressure (up to 8 MPa) from 0,001 µg/m3 to 1 µg/m3.

Subjects

Natural gas (75.060)


Buy this standard

Standard Swedish standard · SS-EN ISO 6978-1:2005

Natural gas - Determination of mercury - Part 1: Sampling of mercury by chemisorption on iodine (ISO 6978-1:2003)
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Price: 1 013 SEK
standard ikon pdf

PDF

Price: 1 013 SEK
standard ikon

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Product information

Language: English

Written by: Svenska institutet för standarder

International title:

Article no: STD-39853

Edition: 1

Approved: 5/20/2005

No of pages: 21