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GB/T 12763.4-2007Specifications for oceanographic survey - Part 4: Survey of chemical parameters in sea water (English PDF)

海洋调查规范第4部分: 海水化学要素调查

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China

Level / Type

National · Recommended

Issue date

August 13, 2007

Implementation date

February 1, 2008

Scope

GB/T 12763.4-2007 is the English-translated version of 海洋调查规范第4部分: 海水化学要素调查.

GB/T 12763.4-2007 is the Chinese standard "Specifications for oceanographic survey - Part 4: Survey of chemical parameters in sea water".

Its scope clause reads: GB/T 12763 in this section specifies the elements of organizational design seawater chemistry survey, survey implementation of the plan, sample collection and storage Storage, measurement methods, quality assurance and data analysis process.

This section applies to the marine waters of the chemical elements of the investigation investigation. Its clauses include terms and definitions.

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Document preview — GB/T 12763.4-2007

National Standard of the People's Republic of China

ICS: 07.060
Classification: A45

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China; Standardization Administration of China

Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General provisions
4.1 Principles survey design requirements
4.2 survey plan and organize the implementation of
4.3 Quality Assurance and Quality Control Analysis
4.4 Sample collection and storage
4.5 General requirements for data processing
4.6 Survey Report prepared by
4.7 archive
5 dissolved oxygen (iodometric titration)
5.1 Technical Specifications
5.2 Method Principle
5.3 Reagents and preparation
5.4 Instruments and equipment
5.5 installed to take water samples, pretreatment and storage
5.6 Determination of Step
5.7 Calculation
5.8 10 arbitration
6 pH measurement (pH meter method)
6.1 Technical Specifications
6.2 Method Principle
6.3 Reagents and preparation
6.5 installed to take water samples, pretreatment and storage
6.6 Determination of Step
6.7 Calculation
7 Determination of total alkalinity (pH method)
7.1 Technical Specifications
7.2 Method Principle
7.3 Reagents and preparation
7.5 installed to take water samples, pretreatment and storage
7.6 Determination of Step
7.7 Calculation
8 activity was measured silicates (silicon-molybdenum blue method)
8.1 Technical Specifications
8.2 Method Principle
8.3 Reagents and preparation
8.5 installed to take water samples, pretreatment and storage
8.6 Determination of Step
8.7 Calculation
8.8 15 arbitration
9 active phosphate assay (ascorbic acid phosphorus molybdenum blue method)
9.1 Technical Specifications
9.2 Method Principle
9.3 Reagents and preparation
9.5 installed to take water samples, pretreatment and storage
9.6 Determination of Step
9.7 Calculation
10 Nitrite (diazo - Azo method)
10.1 Technical Specifications
10.2 Method Principle
10.3 Reagents and preparation
10.5 loading and unloading of water samples, pretreatment and storage
10.6 Determination of Step
10.7 Calculation
11 Determination of nitrate (zinc cadmium reduction method)
11.1 Technical Specifications
11.2 Method Principle
11.3 Reagents and preparation
11.5 loading and unloading of water samples, pretreatment and storage
11.6 Determination of Step
11.7 Calculation
11.8 Arbitration
12 Determination of ammonium salt (sodium hypobromite oxidation)
12.1 Technical Specifications
12.2 Method Principle
12.3 Reagents and preparation
12.5 loading and unloading of water samples, pretreatment and storage
12.6 Determination of Step
12.7 Calculation
12.8 arbitration
13 Measurement of chloride (silver titration)
13.1 Technical Specifications
13.2 Method Principle
13.3 Reagents and preparation
13.5 loading and unloading of water samples, pretreatment and storage
13.6 Determination of Step
13.7 Calculation

1 Scope

GB/T 12763 in this section specifies the elements of organizational design seawater chemistry survey, survey implementation of the plan, sample collection and storage

Storage, measurement methods, quality assurance and data analysis process.

This section applies to the marine waters of the chemical elements of the investigation investigation.

2 Normative references

The following documents contain provisions which, through GB/T 12763 reference in this text, constitute provisions of this part. For dated references,

All subsequent amendments (excluding corrections) or revisions do not apply to this section, however, encourage an agreement under this section

Parties to study the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

GB/T 8170 numerical rounding rules

GB/T 12763.1 specification for oceanographic survey - Part 1. General

GB/T 12763.2 specification for oceanographic survey - Part 2. Marine hydrographic observations

GB/T 12763.7 specification for oceanographic survey - Part 7. Marine survey data exchange

3 Terms and Definitions

The following terms and definitions apply GB/T 12763 in this section.

3.1 DO

Dissolved oxygen in seawater.

Note 1. The unit micromoles per cubic decimeter (µmol/dm3) oxygen atoms.

Note 2. rewrite GB/T 15925, definitions 1.2.20.

3.2

In any given temperature and salinity, dissolved oxygen saturation to a specific concentration in seawater.

3.3

The percentage dissolved oxygen saturation concentration of dissolved oxygen concentration measured at the sample site with water temperature and salinity conditions.

NOTE. rewrite GB/T 15925, definitions 1.2.22.

3.4

Negative hydrogen ion activity in seawater logarithm, namely pH = -lg [alphaH +].

3.5

And the amount of hydrogen ions per unit volume of seawater required to weak acid anions.

Note 1. The unit millimoles per cubic decimeter (mmol/dm3).

Note 2. rewrite GB/T 15925, the definition of 1.2.9.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 69 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 12763

Cited by

Similar standards

GB 17378.1-2007|GB 17378.2-2007|GB 17378.3-2007|GB 17378.4-2007|GB 17378.5-2007

Editions of GB/T 12763.4

Edition	Title	Revision	Status
GB/T 12763.4-2007	Specifications for oceanographic survey - Part 4: Survey of chemical parameters in sea water	current edition	Current
GB/T 12763.4-1991	The specification for oceanographic survey observations of chemical parameters in sea water	previous edition	Superseded

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