GB/T 42629.2-2023Code of practice for international seabed area and high seas environmental survey—Part 2: Marine chemical survey (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting.

This document is part 2 of GB/T 42629 "International Regulations for Environmental Investigation of Seabed Areas and High Seas". GB/T 42629 has been issued the following sections.

--- Part 1. General;

--- Part 2. Marine chemical survey;

--- Part 3. Marine Biological Survey;

--- Part 4. Survey of physical properties of marine sediments.

Introduction

In order to fully implement the "Law of the People's Republic of China on the Exploration and Exploitation of Resources in Deep Seabed Areas" and abide by the relevant regulations of the International Seabed Authority and The requirements of environmental guidelines guide Chinese contractors to effectively implement polymetallic nodules, cobalt-rich crusts and polymetallic sulphide resources in deep seabed areas.

Environmental investigation obligations for resource exploration and development, compiled a series of regulations GB/T 42629 "International Seabed Areas and High Seas Environmental Investigation Regulations", so that my country's environmental investigation techniques and methods in international seabed areas and high seas are in line with international standards, and it is for Chinese contractors to fulfill their environmental investigation obligations and carry out environmental investigations.

Provide technical support for high seas environmental survey. GB/T 42629 aims to establish the content generally applicable to the international seabed area and high seas environmental investigation.

Content, procedures and common requirements, it is proposed to be composed of 4 parts.

--- Part 1. General. The purpose is to establish the international seabed area and the high seas marine chemistry, marine biology, marine sediment Procedures and general requirements for marine environment surveys such as physical properties and physical oceanography.

--- Part 2. Marine chemical survey. The purpose is to standardize the content and analysis methods of marine chemical surveys.

--- Part 3. Marine biological survey. The purpose is to standardize the content, methods and technical requirements of marine biological surveys.

--- Part 4. Survey of physical properties of marine sediments. The purpose is to standardize the survey contents, methods and techniques of physical characteristics of marine sediments. technical requirements.

This document is Part 2 of GB/T 42629. This document is used in conjunction with other parts.

1 Scope

This document specifies general requirements for marine chemical surveys of international seabed areas and the high seas, requirements for chemical analysis of seawater, chemical analysis of sediments Requirements and analytical methods for trace elements in living organisms, etc.

This document applies to marine chemical surveys in international seabed areas and environmental surveys of the high seas other than polar oceans.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 8170 Numerical rounding off rules and expression and determination of limit values

GB/T 11911-1989 Determination of iron and manganese in water by flame atomic absorption spectrophotometry

GB/T 12763.1-2007 Marine survey specification Part 1: General principles

GB/T 12763.4-2007 Specifications for Marine Survey Part 4: Survey of Chemical Elements in Seawater

GB/T 12763.8-2007 Specifications for marine surveys Part 8: Marine geological and geophysical surveys

GB 17378.4-2007 Marine Monitoring Specification Part 4: Seawater Analysis

GB 17378.5-2007 Marine Monitoring Specification Part 5: Sediment Analysis

GB 17378.6-2007 Marine Monitoring Specification Part 6: Analysis of Organisms

GB/T 42629.1-2023 International Technical Regulations for Environmental Survey of Seabed Areas and High Seas Part 1: General Rules

HY/T 206-2016 Determination of iron, manganese, nickel, potassium, sodium, calcium and magnesium in marine sediments and organisms by atomic absorption spectrophotometry

3 Terms and Definitions

The following terms and definitions apply to this document.

4 General requirements