GB 3097-1997 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB 3097-1997 | English | 70 |
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Sea water quality standard
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| GB 3097-1982 | English | RFQ |
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Marine water quality standard
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GB 3097-1997: Sea water quality standard---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB3097-1997
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UCD 551463
Replacing GB 3097-82
Sea Water Quality Standard
Issued on. DECEMBER 03, 1997
Implemented on. JULY 01, 1998
Issued by. State Environmental Protection Administration of the People's
Republic of China
Table of Contents
Foreword... 3
1 Subject Content and Standard Application Scope... 4
2 Normative References... 4
3 Sea Water Quality Classification and Standard... 4
4 Sea Water Quality Monitoring... 6
5 Specification of Mixing Area... 8
Appendix A... 9
Appendix B... 10
Additional Explanations... 11
Foreword
This standard was formulated to implement "Environmental Protection Law of the
People's Republic of China" and "Marine Environment Protection Law of the People's
Republic of China", prevent and control seawater pollution, protect marine living
resources and other marine resources, be in favor of sustainable use of marine
resources, maintain ecological balance of marine, and guarantee human health.
This standard shall be implemented from July 1, 1998 and shall replace GB 3097-82
simultaneously.
This standard has the changes in the following contents and chapters.
— 3.1 (for classification of sea water quality, three classes are changed into four
classes);
— 3.2 (supplement and adjust the pollutant items);
— 4.1 (add the specification on acquisition, storage, transportation and
pretreatment of sea water quality monitoring sample);
— 4.2 (add analysis method of sea water quality).
This standard was proposed by the National Environmental Protection Agency and
the National Bureau of Oceanography.
State Environment Protection Administration is responsible for the interpretation of
this standard.
Sea Water Quality Standard
1 Subject Content and Standard Application Scope
This standard specifies the water quality requirements of every kind of application
function in sea area.
This standard is applicable to the sea area governed by the People's Republic of
China.
2 Normative References
The provisions involved in the following criteria are quoted in this standard to
constitute the provisions of this standard, and have the same effect as this standard.
GB 12763.4-91 The Specification for Oceanographic Survey Observations of
Chemical Parameters in Sea Water
HY 003-91 Code for Marine Monitoring
GB 12763.2-91 The Specification for Oceanographic Survey - Marine hydrographic
observations
GB 7467-87 Water Quality - Determination of Chromium (VI) - Diphenylcarbazide
Spectrophotometric Method
GB 7485-87 Water Quality - Determination of Total Arsenic - Silver
Diethyldithiocarbamate Spectrophotometric Method
GB 11910-89 Water Quality - Determination of Nickel - Dimethylglyoxime
Spectrophotometric Method
3 Sea Water Quality Classification and Standard
3.1 Classification of sea water quality
The sea water quality may be divided into four classes according to different
application functions and protection objectives of sea area.
3.2 Sea water quality standard
4 Sea Water Quality Monitoring
4.1 The acquisition, storage, transportation and pretreatment of sea water quality
monitoring sample shall be carried out according to the relevant specifications of GB
12763.4-91 and HY 003-91.
Appendix A
(Normative)
Calculation of Inorganic Nitrogen
The inorganic nitrogen is the sum of nitrate nitrogen, nitrite nitrogen and ammonia
nitrogen, and inorganic nitrogen is also referred as "active nitrogen" or hereinafter
referred to as "three nitrogen".
The concentration of nitrate, nitrite and nitrogen in water sample during current
monitoring is the sum expressed with μmol/L. But this standard specifies inorganic
nitrogen is calculated by nitrogen (N), and the unit shall be adopted with mg/L;
therefore, the inorganic nitrogen shall be calculated according to the following
formula.
Appendix B
(Normative)
Conversion Method of Non-ionic Ammonia
The concentration of ammonia measured according to indophenol blue method and
sodium hypobromite oxidation process (GB 12763.4-91) is deemed as the sum of
non-ionic ammonia and ionic ammonia concentration, and the ratio of non-ionic
ammonia in ammonia water solution has the relation with water temperature, pH value
and salinity. The concentration of non-ionic ammonia may be converted according to
the following formulae.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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