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GB/T 30741-2014 English PDF

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GB/T 30741-2014: Determination of total sulfur in ocean atmospheric dry deposition -- Nondispersive infrared absorption spectrometry
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GB/T 30741-2014English279 Add to Cart 3 days [Need to translate] Determination of total sulfur in ocean atmospheric dry deposition -- Nondispersive infrared absorption spectrometry Valid GB/T 30741-2014

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Basic data

Standard ID GB/T 30741-2014 (GB/T30741-2014)
Description (Translated English) Determination of total sulfur 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 12,161
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 sulfur non-dispersive infrared absorption method. This Standard applies to the determination of marine sediment samples were dried in total sulfur concentration

GB/T 30741-2014: Determination of total sulfur in ocean atmospheric dry deposition -- Nondispersive infrared absorption spectrometry


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Determination of total sulfur 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 sulfur - 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. Iris Chang Chao, Cai Syria, Ni Zhixin, Shangguan Mansfield, Grades, Chen Jianchang, Xinhai Hong, He Xiaoyuan, Huang Chuguang, Lin side, HTC side, Wujin Xiao, Qu read East. Determination of the ocean-atmosphere dry deposition of sulfur - Non-dispersive infrared absorption method

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 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 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 ℃, 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.

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