GB/T 30741-2014Determination of total sulfur in ocean atmospheric dry deposition - Nondispersive infrared absorption spectrometry (English PDF)
海洋大气干沉降物中总硫的测定 非色散红外吸收法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
March 27, 2014
Implementation date
October 1, 2014
Scope
GB/T 30741-2014 is the English-translated version of 海洋大气干沉降物中总硫的测定 非色散红外吸收法.
GB/T 30741-2014 is the Chinese standard "Determination of total sulfur in ocean atmospheric dry deposition - Nondispersive infrared absorption spectrometry". Its scope clause reads: This standard specifies the determination of the ocean-atmosphere dry sediment samples total sulfur non-dispersive infrared absorption method.
This standard applies to the determination of marine sediment samples dry atmosphere of total sulfur concentration. Its clauses include terms and definitions; principle of the method; reagents and materials.
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Document preview — GB/T 30741-2014
National Standard of the People's Republic of China
- ICS
- 07.060
- Classification
- Z 17
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Terms and definitions
- 3 PRINCIPLE OF THE METHOD
- 4 Reagents and materials
1 Scope
This standard specifies the determination of the ocean-atmosphere dry sediment samples total sulfur non-dispersive infrared absorption method.
This standard applies to the determination of marine sediment samples dry atmosphere of total sulfur concentration.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1 Ocean-atmosphere dry deposition
In the air - sea interface stays aerosol particle size in the range of 100µm or less collectively Oceanic and Atmospheric suspended particles.
2.2 Total sulfur totalcarbon; TS
Reference material or samples contained sulfur in general, including Organic and inorganic sulfur sulfur, sulfur quality division
She expressed as the number.
3 PRINCIPLE OF THE METHOD
Samples high temperature combustion of sulfur dioxide or sulfur trioxide epigenetic become, through the reduction of sulfur trioxide column into two
Sulfur dioxide, under the impetus of the carrier gas, sulfur dioxide by adsorption - desorption and other gases after separation into a non-dispersive infrared absorption detector (NDIR)
Testing. In response to the signal value with the corresponding value of the absorption signal according to the infrared dioxide produced after combustion of the sample unit mass of elemental sulfur,
Calculation of sulfur content in the sample.
4 Reagents and materials
4.1 Reagent *
* Unless otherwise specified, the reagents used in 4.1 were of analytical grade.
4.1.1
amino acid (sulfanilicacid), analytical grade or higher purity levels, drying temperature. 105 °C, drying time. not less than
1h, cooled to room temperature before use in drying dish.
4.1.2
Other equipment manufacturer's recommended standards.
Gas 4.2 4.2.1 helium or argon gas (carrier gas), not less than 99.995% purity, moisture not more than 10-6g/L, with a gas valve, pressure gauge range.
0MPa ~ 0.4MPa.
4.2.2
oxygen purity of not less than 99.995%, moisture not more than 10-6g/L, with oxygen valve, pressure gauge measuring range. 0MPa ~
0.6MPa.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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