This standard specifies the sediment quality requirements for various uses in the sea area. This standard applies to the sea areas under the jurisdiction of the People's Republic of China. GB 18668-2002 Marine Sediment Quality GB18668-2002 Standard download decompression password: www.bzxz.net

GB18668—2002bZxz.net
All technical contents of this standard are mandatory.
This standard is specially formulated to implement the Environmental Protection Law of the People's Republic of China and the Marine Environmental Protection Law of the People's Republic of China, to prevent and control marine sediment pollution, protect marine biological resources and other marine resources, and be conducive to the sustainable use of marine resources, maintain marine ecological balance, and protect human health.
This standard is proposed by the State Oceanic Administration and is responsible for its interpretation. This standard is under the jurisdiction of the National Marine Standards and Metrology Center. The drafting unit of this standard: National Marine Environmental Monitoring Center of the State Oceanic Administration. The main drafters of this standard are Ma Deyi, Tang Liefeng, Gong Juying, Yan Qilun, Ma Yongan, Guan Daoming, Wang Hongyuan, com1Scope
National Standard of the People's Republic of China
Marine sediment quality
This standard specifies the sediment quality requirements for various types of use functions in the sea area. This standard applies to sea areas under the jurisdiction of the People's Republic of China. 2 Referenced standards
GB1B66B—2002
The provisions contained in the following standards constitute the provisions of this standard by being cited in this standard. When this standard is released, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB17378.5—1998 Marine Monitoring Specifications Part 5: Sediment Analysis GB17378.7—1998 Marine Monitoring Specifications Part 7: Ecological Investigation and Biological Monitoring of Offshore Pollution GBJ48-1983 Hospital Wastewater Discharge Standard
3 Marine Sediment Quality Classification and Indicators
3.1 Marine Sediment Quality Classification
According to the different use functions of the sea area and the environmental protection goals, the quality of marine sediments is divided into three categories. The first category is applicable to marine fishery waters, marine nature reserves, rare and endangered biological nature reserves, marine aquaculture areas, bathing beaches, marine sports or entertainment areas where the human body directly contacts sediments, and industrial water areas directly related to human consumption. The second category is applicable to general industrial water use areas and coastal scenic tourist areas. The third category is applicable to marine port waters and special marine development operation areas. 3.2 Marine Sediment Quality Classification Indicators
The quality standards of various types of sediments are listed in Table 1. Table 1 Marine Sediment Quality Standards
Waste and Others
Color, Smell, Knot
Eliform Bacteria/(Individuals/g Weight)
Fecal Coliform Bacteria/(Individuals/g Wet Weight)
Pathogens
Mercury (×10-\))
Class I
Class II
No industrial or domestic waste, no large plant debris or animal carcasses on the seabed
Sediment has no foreign color or odor, and has a natural structure
The bottom of shellfish culture for human consumption shall not contain pathogens 0.20
Approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on March 10, 2002 0. 50
Category III
No obvious industrial and cattle
active waste on the seabed, no obvious large
plant debris and animal bodies, etc.
Implemented on October 1, 2002
Cadmium (×10\)
Lead (×10 6)
Zinc (×10-\)
Copper (×10-*)
Grid (×10
Arsenic (×10\)
Organic carbon (×10-*)
Sulfide (×10-*)
Petroleum (×10-\)
Benzene hexachloride (×10-\)
Dihydrogen sulfide (×10-*)
Polyoxygen sulfide (×10-)
GR 18668—2002
Table 1 (end)
Category 1
Category 2
1) Except for coliform bacteria, fecal coliform bacteria and pathogens, the remaining numerical measurement items (serial numbers 6 to 18) are all calculated based on the weight below. 2) For shellfish culture substrates for human consumption, the requirement for coliform bacteria (individuals/g weight) is ≤14. 3) For shellfish culture substrates for human consumption, the requirement for intestinal bacteria (individuals/g weight) is ≤3. 4 Determination of marine sediment quality
4.1 The collection, pretreatment, preparation and preservation of marine sediment samples shall be carried out in accordance with the relevant provisions of GB 17378.5. Category III
4.2 The determination of each item in this standard shall be carried out in accordance with the analytical methods in Table 2. Except for the determination method of coliform bacteria and fecal coliform bacteria, which refers to the standard GB 17378.7, and the determination method of pathogens, which refers to the standard GBJ 48, the determination methods of other items all refer to the standard GB 17378.5. The reference standards of each item are shown in Table 2. Table 2 Analysis methods of marine sediments
E. coli
Pathogens
Fecal coliform
Analysis methods
(1) Fermentation method (seed interception method)
(2) Filter membrane method
SS-plate separation method
(1) Fermentation method (reduction method)
(2) Filter membrane method
(1) Flame atomic absorption spectrophotometry (arbitration method) (2) Double trace spectrophotometry
(1) Flameless atomic absorption spectrophotometry (arbitration method) (2) Flame atomic absorption spectrophotometry
(1) Flameless atomic absorption spectrophotometry (arbitration method) (2) Flame atomic absorption spectrophotometry
(3) Dithiol spectrophotometry
Detection index/a
30×10-
0. 04×10-6
0.05×10-5
0. 5×10-6
Reference standard
GB 17378.71998
GBJ481983
GB 17378. 7 1998
GH 17378. 5—1998
GE 17378. 5—1998
CB 17378. 5—1998
Organic carbon
Sulfide
BHC\
DDT 2
PCBs
GB 186682002
Table 2 (End)
Analytical methods
(1) Flame atomic absorption spectrophotometry (arbitration method) (2) Dithiol spectrophotometry
(1) Flameless atomic absorption spectrophotometry (arbitration method) (2) Flame fusion atomic absorption spectrophotometry
(3) Sodium diethyl dithiocarbamate spectrophotometry (1) Flameless atomic absorption spectrophotometry (arbitration method) (2) Diphenylcarbazide dicysteine ​​spectrophotometry
(1) Aluminate-crystal ultraviolet spectrophotometry (2) Hydride-atomic absorption spectrophotometry (arbitration method) (3) Catalytic polarography
(1) Thermal conductivity method
(2) Potassium dichromate oxidation-reduction volumetric method (combined method) (1) Methylene blue spectrophotometry
(2) High ion selective electrode method
(3) Iodine titration (arbitration method)
(1) External spectrophotometry
(2) Fluorescence spectrophotometry (arbitration method) Gas chromatography
Gas chromatography
Gas chromatography
1) The detection limit of hexachlorocyclohexane refers to the sum of the detection limits of its four isomers. 2) The detection limit of the droplet refers to the sum of the detection limits of its four isomers/u
6×10-
3×10-5
2×10-5
1×10-8
3×10-
2×10-5
0.03×10-2
0.3×10-6
0. 2×10-6
4×10-5
2×10-
3×10-6
Reference standard
GB17378.5—1998
GB 17378. 5-1998
GB 17376. 5—1998
GB 17378. 5—1998
GB 17378. 5—1998
GB 1737B. 51998
GB 17378.5—1998
GB 17378. 5—1998
GB 1737B. 5—1998
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