GB/T 30742-2014Determination of total carbon in ocean atmospheric dry deposition - Nondispersive infrared absorption spectrometry (English PDF)
海洋大气干沉降物中总碳的测定 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 30742-2014 is the English-translated version of 海洋大气干沉降物中总碳的测定 非色散红外吸收法.
GB/T 30742-2014 is the Chinese standard "Determination of total carbon 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 carbon non-dispersive infrared absorption method.
This standard applies to the determination of marine sediment samples dry atmosphere of total carbon concentration. Its clauses include terms and definitions; principle of the method; reagents and materials.
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Document preview — GB/T 30742-2014
National Standard of the People's Republic of China
- ICS
- 13.040
- 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 carbon non-dispersive infrared absorption method.
This standard applies to the determination of marine sediment samples dry atmosphere of total carbon 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 carbon totalcarbon (TC)
Reference material or samples of carbon contained in the totality of the organic carbon and inorganic carbon, carbon mass fraction to
FIG.
3 PRINCIPLE OF THE METHOD
This method is a way to the ocean-atmosphere carbon dioxide dry sediment filter samples after high temperature combustion produced by non-dispersive infrared detector
Device (the NDIR) method for measuring. According to the response signal generated by the infrared absorption of carbon dioxide and a signal value corresponding to the unit mass of carbon
Number value to calculate the carbon content in the sample.
4 Reagents and materials
4.1 Reagent *
* Unless otherwise specified, the reagents 4.1 of analytical grade.
4.1.1
acetanilide (acetanilide), analytical grade or higher purity level, the drying temperature. 60 °C, drying time. not less than 1h, dried
The dish was cooled to room temperature before use.
4.1.2
Other elements of the instrument manufacturer's recommended analytical 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, 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, oxygen valve, pressure gauge measuring range. 0MPa ~ 0.6MPa.
4.3 Material
4.3.1
Ball valve type injector, to use a ceramic crucible or foil.
......
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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