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Significance and Use
The measurement of hydrogen sulfide in natural gas is important because of the gas quality specifications, the corrosive nature of H2S on pipeline materials, and the effects of H2S on utilization equipment.
This test method provides inexpensive field screening of hydrogen sulfide. The system design is such that it may be used by nontechnical personnel with a minimum of proper training.
1.1 This test method covers a procedure for a rapid and simple field determination of hydrogen sulfide in natural gas pipelines. Available detector tubes provide a total measuring range of 0.5 ppm by volume up to 40 % by volume, although the majority of applications will be on the lower end of this range (that is, under 120 ppm).
1.2 Typically, sulfur dioxide and mercaptans may cause positive interferences. In some cases, nitrogen dioxide can cause a negative interference. Most detector tubes will have a “precleanse” layer designed to remove certain interferences up to some maximum interferent level. Consult manufacturers' instructions for specific interference information.
1.3 The values stated in SI units are to be regarded as the standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Gas Processors Association StandardNo.2377-86 Test for Hydrogen Sulfide in Natural Gas Using Length of Stain Tubes Available from Gas Processors Association, 1812 First National Bank Bldg., Tulsa, OK 74103.
ICS Number Code 75.060 (Natural gas)
UNSPSC Code 15111500(Gaseous fuels)