日本語の概要・翻訳のご依頼可
GB18668-2002
Marine sediment quality
海洋沉积物质量
GB 18668-2002 は現行の中国強制国家規格です：Marine sediment quality。 業界：環境。テーマ：製品安全。 施行日：2002年10月1日。
適用可否は製品範囲、認証ルート、所管当局の通知、移行規定によって異なります。コンプライアンス判断に使う前に、翻訳をご依頼いただくか公式情報源をご確認ください。
コンプライアンス概要
この概要は現在英語のみで提供しています。
適用範囲
This standard is applicable to all marine areas under the jurisdiction of the People's Republic of China. It specifies the marine sediment quality requirements for various sea area usage functions. This standard is mandatory for all marine environmental monitoring and development projects. It categorizes marine sediments into three classes based on different usage functions and environmental protection goals, ranging from marine fisheries and nature reserves to industrial water zones and port waters.
技術要求
The standard classifies marine sediment quality into three categories, each with specific limits for various physical, chemical, and biological parameters. It mandates that the seabed must be free of industrial and domestic waste, abnormal color, and odor, maintaining a natural structure. For biological indicators, the standard sets strict limits on coliform bacteria, fecal coliforms, and pathogens, particularly for sediments in shellfish farming areas intended for raw human consumption. Regarding chemical pollutants, the standard specifies maximum concentration limits for heavy metals such as mercury, cadmium, lead, and copper. It also regulates organic compounds, including organic carbon, sulfides, petroleum hydrocarbons, and persistent organic pollutants like PCBs and *HCH* (hexachlorocyclohexane). Compliance with these specific numerical limits is essential for environmental approval.
試験方法
The standard outlines the analytical methods for marine sediment samples, referencing *GB 17378.5-1998*, *GB 17378.7-1998*, and *GBJ 48-1983*. It details procedures for sample collection, preparation, and preservation. Testing methods include cold atomic absorption spectrophotometry for mercury, flameless atomic absorption spectrophotometry for heavy metals, and gas chromatography for organic pollutants. Specific detection limits are established for each analytical method to ensure accuracy.
よくある質問
What products or projects are regulated under GB 18668-2002?
GB 18668-2002 regulates the quality of marine sediments in all sea areas under China's jurisdiction. It applies to marine fisheries, nature reserves, industrial water zones, and port development projects.
Is GB 18668-2002 a mandatory standard?
Yes, all technical content within GB 18668-2002 is mandatory. Compliance is legally required for relevant marine activities in China.
How are marine sediments classified in this standard?
Marine sediments are classified into three categories based on usage functions: Class I for fisheries and nature reserves, Class II for general industrial and tourism use, and Class III for port waters and special marine operations.
The summary above provides a high-level overview of GB 18668-2002. To ensure complete compliance for your marine projects in the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of *GB 18668-2002* today to access all detailed parameters, tables, and testing procedures.
適用のヒント
- 種別
- 環境保護
- CCS
- Z50
- ICS
- 13.060.01
- 所管部門
- Ministry of Natural Resources (Marine)
- 技術委員会
- National Technical Committee on Marine of Standardization Administration of China