GB 3097-1997 English PDF (GB3097-1997)

Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click GB 3097-1997
Historical versions: GB 3097-1997
Preview True-PDF (Reload/Scroll if blank)

GB 3097-1997: Sea water quality standard
GB 3097-1997
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
GB 11912-89 Water Quality - Determination of Nickel - Flame Atomic Absorption
Spectrometric Method
GB 13192-91 Water Quality - Determination of Organic Phosphorous Pesticide in
Water - Gas Chromatography
GB 11895-89 Water Quality - Determination of Benzo(alpha)-pyrene - Acetylated
Paper Chromatography with Fluorescence Spectrophotometric Method
When above standards are revised, the latest edition shall be applied.
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.
Class I It is applicable to marine fishery water area, marine natural protection
area and rare marine organism protection area.
Class II It is applicable to aquiculture area, bathing beach, movement overseas
or recreational area with direct sea water contact for human body as well
as industrial water area having direct connection with human edible.
Class III It is applicable to general industrial water area and offshore landscape
tourist area.
Class IV It is applicable to ocean port water area and ocean exploitation operating
area.
3.2 Sea water quality standard
Each kind of sea water quality standard is listed in the Table 1.
Table 1 Sea Water Quality Standard mg/L
SN Item Class I Class II Class III Class IV
1 Floating matter The sea surface shall be free from oil layer, spume and other floating matters
The sea surface shall be free from
obvious oil layer, spume and other
floating matters
2 Color, odor and smell
The sea water shall be free from any
heterochrosis, abnormal odor and peculiar
smell
The sea water shall be free from
any distasteful and unhappy color,
odor and smell.
3 Suspended matter Artificially added quantity ≤10
Artificially added
quantity ≤
Artificially added quantity≤150
4 Coliform bacteria ≤ (piece/L)
Water quality of shellfish culture for raw edible
≤700
5 Coliform bacteria ≤ (piece/L)
Water quality of shellfish culture for raw edible
≤140
6 Pathogenic agent Water quality of shellfish culture for raw edible shall not contain pathogenic agent.
7 Water temperature (Ԩ)
The sea water temperature
rise caused by human shall
not exceed 1Ԩ then and
there in summer, and shall
not exceed 2Ԩ for other
seasons
The sea water temperature rise caused by human
shall not exceed 4Ԩ then and there
8 pH
7.8~8.5
Not exceed 0.2 pH unit of
normal variation range of this
sea area
6.8~8.8
Not exceed 0.5 pH unit of normal variation range of
this sea area
9 Dissolved oxygen > 6 5 4 3
10 Chemical oxygen demand≤ (COD) 2 3 4 5
11 Biochemical oxygen demand ≤ (BOD5) 1 3 4 5
12 Inorganic nitrogen ≤ (by N) 0.20 0.30 0.40 0.50
13 Non-ionic ammonia≤ (by N) 0.020
14 Reactive phosphate ≤ (by P) 0.015 0.030 0.045
15 Mercury≤ 0.00005 0.0002 0.0005
34 Anionic surface active agent (by LAS) Methene blue spectrophotometric method 0.023 HY 003.4-91
35 Radionuclide Bq/L
60Co Ion exchange-extraction-electro-precipitation process 2.2×10-3 HY/T 003.8-91
90Sr (1) HDEHP extraction-β counting method (2) Ion exchange-β counting method
1.8×10-3
2.2×10-3
HY/T 003.8-91
HY/T 003.8-91
106Ru
(1) Tetrachloromethane extraction-powdered magnesium
reduction-β counting method
(2) Gamma spectrum method 1.
3.0×10-3
4.4×10-3 HY/T 003.8-91
134Cs Gamma spectrum method, see 137Cs analysis method
137Cs
(1) Ferro cupric cyanide-silicagel site enrichment-gamma
spectrum method
(2) Ammonium phosphomolybdate-cesium iodine bismuth-β
counting method
1.0×10-3
3.7×10-3
HY/T 003.8-91
HY/T 003.8-91
Notes.
1. The following analysis method shall be adopted temporarily, and the national standard shall be
implemented after national method standard issuance.
a. "Standard Methods for Examination of Water and Wastewater", 15th edition, China Architecture
and Building Press, 805~827, 1985.
b. Environmental science. 7(6). 75~79, 1986.
c. "Radiation Protection Manual", Atomic Energy Press, 2.259, 1988.
2. See Appendix A
3. See Appendix B
4. The detection limit of benzene hexachloride and DDT refers to the sum of detection limit of four kinds
of foreign matters.
5    Specification of Mixing Area   
The mixing area formed by concentrated discharge of wastewater shall not influence
the water quality of adjacent functional zone and fish migration channel.
Appendix A 
(Normative)
Calculation of Inorganic Nitrogen
The inorganic nitrogen is the sum of nitrate nitrog...