The principle of the method specified is passing a measured volume of gas through the titration cell, where the water is absorbed by the anodic solution. The iodine required for the determination of water by the Karl Fischer reaction is generated coulometrically from iodide. The quantity of electricity is directly proportional to the mass of iodine generated and hence to the mass of water determined. Applies to natural gas and other gases which do not react with Karl Fischer reagents. Is applicable to water concentrations between 5 mg/cm3 and 5000 mg/cm3.
Số hiệu tiêu chuẩn
ISO 10101-3
Tên tiêu chuẩn
Natural gas; determination of water by the Karl Fischer method; part 3: coulometric procedure
Ngày phát hành
1993-10-00
Tiêu chuẩn tương đương
NF X20-001-3*NF EN ISO 10101-3 (1998-09-01), IDT *
NF X20-538*NF ISO 10101-3 (1994-12-01), IDT * DIN 51869 (1986-05), IDT * DIN EN ISO 10101-3 (1998-07), IDT * BS 3156 PART 11 SECTION 11.3 SUBSECTION 11.3.3 (1994), IDT * BS EN ISO 10101-3 (1994-03-15), IDT * GB/T 18619.1 (2002), NEQ * EN ISO 10101-3 (1998-03), IDT * prEN ISO 10101-3 (1997-07), IDT * SN EN ISO 10101-3 (1999), IDT * OENORM EN ISO 10101-3 (1998-06-01), IDT * PN-EN ISO 10101-3 (2011-08-05), IDT * PN-ISO 10101-3 (1997-09-18), IDT * PN-ISO 10101-3/Ap1 (1999-10-04), IDT * SS-EN ISO 10101-3 (1998-09-25), IDT * SS-ISO 10101-3 (1994-02-11), IDT * UNE-EN ISO 10101-3 (1998-09-23), IDT * STN EN ISO 10101-3 (2000-11-01), IDT * CSN EN ISO 10101-3 (1998-12-01), IDT * DS/EN ISO 10101-3 (1998-11-05), IDT * NEN-EN-ISO 10101-3:1998 en (1998-04-01), IDT * NEN-ISO 10101-3:1996 en (1996-01-01), IDT
Thay thế cho
ISO/DIS 10101-3 (1991-03)
Từ khóa
Chemical analysis and testing * Coulometric methods * Coulometry * Determination of content * Fuels * Gas analysis * Gaseous fuels * Gases * Karl Fischer * Karl Fischer method * Materials testing * Natural gas * Test equipment * Testing * Water * Water content * Water content determination * Content * Mass concentration * Determination