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GB/T 30742-2014 English PDF

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GB/T 30742-2014: Determination of total carbon in ocean atmospheric dry deposition -- Nondispersive infrared absorption spectrometry
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Basic data

Standard ID GB/T 30742-2014 (GB/T30742-2014)
Description (Translated English) Determination of total carbon in ocean atmospheric dry deposition -- Nondispersive infrared absorption spectrometry
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Z17
Classification of International Standard 07.060; 13.040
Word Count Estimation 9,965
Date of Issue 6/9/2014
Date of Implementation 10/1/2014
Regulation (derived from) National Standards Bulletin No. 11 of 2014
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This Standard specifies the determination Oceanic and Atmospheric dry deposition samples total carbon non-dispersive infrared absorption method. This Standard applies to the determination of marine sediment samples were dried in the total carbon concentra

GB/T 30742-2014: Determination of total carbon in ocean atmospheric dry deposition -- Nondispersive infrared absorption spectrometry


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Determination of total carbon in ocean atmospheric dry deposition. Nondispersive infrared absorption spectrometry ICS 07.060; 13.040 Z17 National Standards of People's Republic of China Determination of the ocean-atmosphere dry deposition of total carbon Non-dispersive infrared absorption method Issued on. 2014-06-09 2014-10-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard was proposed by the State Oceanic Administration. This standard by the National Standardization Technical Commission for Oceanography (SAC/TC283) centralized. This standard by the State Oceanic Administration, the South China Sea Environmental Monitoring Center is responsible for drafting. The main drafters of this standard. Ni Zhixin, square HTC, Chang Chao, Ye Jianping, Wu Lingling, Zhang Bao-Xue, Xin Haihong, He Xiaoyuan, forest side, Huangchu Guang, Cai Wei Syria, Wujin Xiao, Qu read East. Determination of the ocean-atmosphere dry deposition of total carbon Non-dispersive infrared absorption method

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 oceanatmosphericdrydeposition 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 ℃, 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.

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