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QX/T 68-2007Monitoring of ambient black carbon. Optical attenuation method (English PDF)

大气黑碳气溶胶观测—光学衰减方法

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Issued by

China Meteorological Administration

Level / Type

National · Recommended

Issue date

June 22, 2007

Implementation date

October 1, 2007

Scope

QX/T 68-2007 is the English-translated version of 大气黑碳气溶胶观测—光学衰减方法.

QX/T 68-2007 — This standard specifies the use of black and gray instrument for atmospheric carbon black carbon aerosol methods of observation. Including the technical requirements, installation environment and the measuring method, and data recording format.

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Document preview — QX/T 68-2007

National Standard of the People's Republic of China

ICS: 07.060
Classification: A 47

Issued by: China Meteorological Administration

[Preview only]
1 Scope
2 Normative References
2.1 Terms
3 Terms and Definitions
4 Overview
4.1 General requirements
5 Technical Requirements
6 Calibration conditions
6.1 Environmental conditions
6.2 Measurement standards and other equipment
7 Calibration items and calibration methods
7.1 Calibration Items
7.2 Calibration method
8 Expression of calibration results
9 Recalibration interval

1 Foreword

QX/T 68-2007 was issued by China Meteorological Administration on 22 June 2007 and has been in force since 1 October 2007.

The QX/T prefix marks a recommended standard. It is not law in itself: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it.

The document runs to 6 pages in English translation.

2 Scope Preview

This standard specifies the use of black and gray instrument for atmospheric carbon black carbon aerosol methods of observation. Including the technical requirements, installation environment and the measuring method, and data recording format. This standard applies to meteorological and related industries in the determination of atmospheric black carbon aerosol concentration.

QX/T 68-2007 falls under ICS 07.060, in the field of natural and applied sciences.

This catalogue holds 269 other QX/T standards in that field.

In this catalogue, QX/T standards carry edition years from 2001 to 2026.

3 About this standard

Issued by: China Meteorological Administration

English translation: about 6 pages

Chinese original: about 8,834 characters

4 Related standards

Standards on related subjects:

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GB/T 33673-2017 — Grade of horizontal visibility

DZ/T 0175-2014 — Specifications for Geological Mapping of Coal (1:50000 1:25000 1:10000 1:5000)

QX/T 90-2024 — Technical requirements for tree ring sample collection

QX/T 69-2024 — Aerosol Optical Depth - Sunlight meter method

QX/T 98-2023 — Low temperature and chilling damage levels during early rice sowing and seedling raising period

5 Classification and status

International classification (ICS): 07.060

Chinese Standard Classification (CCS): A 47

Prefix QX/T: recommended standard.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 6 pages — is available in the English PDF.

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