GB17378.5-2007

The specification for marine monitoring - Part 5：Sediment analysis

海洋监测规范第5部分: 沉积物分析

GB 17378.5-2007 ist eine gültige verbindliche chinesische Nationalnorm: The specification for marine monitoring - Part 5：Sediment analysis. Branchencluster: Umwelt. Schwerpunkt: Umweltschutz. Inkrafttreten: 1. Mai 2008.

Die Anwendbarkeit hängt vom Produktumfang, dem Zertifizierungsweg, Bekanntmachungen der Behörden und Übergangsregeln ab. Fordern Sie eine Übersetzung an oder prüfen Sie die Quelle, bevor Sie diesen Eintrag für Compliance-Entscheidungen nutzen.

Compliance-Überblick

Dieser Überblick ist derzeit nur auf Englisch verfügbar.

Geltungsbereich und Anwendbarkeit

GB 17378.5-2007 is mandatory for marine environmental monitoring and specifies the analytical methods for marine sediment samples. It applies to the investigation and monitoring of sediments in oceans, nearshore areas, estuaries, and harbors, as well as the analysis of dredged materials and ocean dumping wastes. This standard is essential for environmental impact assessments and marine pollution control compliance in China. It does not cover the biological analysis of marine organisms, which is addressed in Part 6 of the same standard series.

Technische Anforderungen

The standard specifies comprehensive analytical requirements for various chemical parameters in marine sediments. It mandates specific preparation protocols, such as grinding dried samples to pass through a 160-mesh sieve for heavy metal analysis, and using specific extraction techniques for organic pollutants. Strict quality control protocols must be followed during sample preparation and analysis. For heavy metals and metalloids—including total mercury, copper, lead, cadmium, zinc, chromium, arsenic, and selenium—the standard defines specific digestion procedures (e.g., using nitric-perchloric acid systems) and establishes acceptable relative deviation limits for duplicate samples. It also outlines precise preparation steps for analyzing oil类, organic carbon, and organic pollutants. The standard sets requirements for the determination of organic pollutants such as 666 (BHC), DDT, dieldrin, and polychlorinated biphenyls (PCBs). It specifies the use of gas chromatography with electron capture detection (Ni-63 ECD) and mandates specific cleanup procedures using florisil and activated carbon columns to eliminate interferences from lipids, pigments, and sulfur. Additionally, it covers the analysis of sulfides, organic carbon, moisture content, and oxidation-reduction potential. The standard includes informative annexures for total phosphorus and total nitrogen determination, providing a holistic framework for marine sediment quality assessment.

Prüfverfahren

The standard employs a diverse array of analytical techniques tailored to specific sediment parameters. Atomic Fluorescence Spectrometry and Cold Vapor Atomic Absorption are utilized for trace mercury analysis. For heavy metals like copper, lead, cadmium, zinc, and chromium, both Flame and Flameless (Graphite Furnace) Atomic Absorption Spectrophotometry are prescribed. For arsenic and selenium, methods include hydride generation, atomic fluorescence, and catalytic polarography. Gas Chromatography equipped with an electron capture detector is the primary method for identifying organochlorine pesticides and PCBs. Other key methods include methylene blue spectrophotometry and ion-selective electrodes for sulfides, redox titration and thermal conductivity for organic carbon, and gravimetric analysis for moisture and oil content determination.

Häufige Fragen

What products and environments are regulated under GB 17378.5-2007?

This standard regulates the analysis of marine sediments in environments such as oceans, nearshore areas, estuaries, and harbors. It is also applicable to the investigation and monitoring of marine dredged materials and ocean dumping wastes.

Are there any significant updates from the previous version, GB 17378.5-1998?

The 2007 edition introduced several major updates, including the addition of atomic fluorescence methods for determining total mercury and arsenic, and the transition to continuous determination methods for copper, lead, and cadmium. It also added new informative annexes for determining total phosphorus, total nitrogen, and capillary gas chromatography methods for organic氯 pesticides and PCBs.

How does GB 17378.5-2007 handle the selection of testing methods for the same parameter?

The standard provides multiple testing methods for various parameters to suit different laboratory capabilities and sample matrices. For each parameter, an arbitration method (仲裁方法) is designated, which serves as the reference standard for resolving discrepancies in analytical results between different laboratories.

The summary above provides a high-level overview of GB 17378.5-2007. To ensure complete compliance for your marine monitoring 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 17378.5-2007 today to access all detailed parameters, reagent preparation protocols, calculation formulas, and standardized testing procedures.

Hinweise zur Anwendbarkeit

Normtyp: Umweltschutz
CCS: A45
ICS: 07.060
Zuständige Behörde: Ministry of Natural Resources (Marine)
Technisches Komitee: National Technical Committee on Marine of Standardization Administration of China

Normbeziehungen

Ersetzt:GB 17378.5-1998