GB17378.6-2007

The specification for marine monitoring - Part 6：Organism analysis

海洋监测规范第6部分: 生物体分析

GB 17378.6-2007 est une norme nationale chinoise obligatoire en vigueur : The specification for marine monitoring - Part 6：Organism analysis. Secteur : Environnement. Thème principal : Protection de l’environnement. Entrée en vigueur : 1 mai 2008.

L’applicabilité dépend du périmètre du produit, de la voie de certification, des avis des autorités et des règles de transition. Demandez une traduction ou vérifiez la source avant d’utiliser cette fiche pour une décision de conformité.

Aperçu de conformité

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Champ d’application

GB 17378.6-2007 specifies the determination methods for harmful substance residues in marine organisms, including bivalve mollusks (such as mussels and oysters), shrimp, and fish. It is applicable to marine biological pollution surveys and monitoring in oceanic, offshore, and coastal waters. This standard is mandatory for all marine environmental monitoring and biological pollution assessments conducted in China. It should be referenced alongside GB 17378.3 for sample collection and transportation requirements.

Exigences techniques

The standard outlines stringent requirements for the collection, transportation, pretreatment, and storage of biological samples to prevent cross-contamination. It specifies detailed preparation protocols for different species, such as extracting muscle tissue from fish and soft tissues from bivalves, while mandating the use of specific plastic or glass tools to avoid trace metal interference. Analysts must follow strict dry-weight determination protocols, including oven-drying at 105°C or freeze-drying for high-lipid samples, to accurately calculate moisture content corrections. For chemical analysis, the standard specifies multiple testing methods for a comprehensive suite of trace metals and organic pollutants. Target analytes include total mercury, copper, lead, cadmium, zinc, chromium, arsenic, and selenium, alongside organic contaminants like petroleum hydrocarbons, organochlorine pesticides (666, DDT, dieldrin), and polychlorinated biphenyls (PCBs). For certain elements like mercury and arsenic, the standard mandates that wet samples must be used for digestion rather than dried samples. Furthermore, the standard establishes rigorous quality control parameters, requiring the use of certified reference materials and parallel double-sample testing to monitor analytical precision. It defines acceptable relative deviation limits based on the concentration magnitude of the analytes. Laboratories must adhere to these quality control protocols strictly, as failure to meet the deviation limits requires complete re-testing of the sample batch.

Méthodes d’essai

The standard prescribes a variety of sophisticated analytical techniques tailored to specific contaminants and sample matrices. Key testing methods include atomic fluorescence spectrometry for total mercury and arsenic, and both flame and flameless (graphite furnace) atomic absorption spectrophotometry for heavy metals like copper, lead, cadmium, zinc, and chromium. Anodic stripping voltammetry is also specified as an alternative for several metals. For organic pollutants, the standard details gas chromatography with electron capture detection for organochlorine pesticides and PCBs, and fluorescence spectrophotometry for petroleum hydrocarbons. Additionally, it includes specialized methods like catalytic polarography and various spectrophotometric techniques for elements such as selenium and chromium.

Questions fréquentes

What products and samples are regulated under GB 17378.6-2007?

This standard regulates the analysis of harmful substance residues in marine organisms, specifically targeting bivalve mollusks (like mussels and oysters), shrimp, and fish collected from marine environments.

Are there any significant updates from the previous 1998 version of GB 17378.6?

The 2007 version is mandatory and introduced several key updates, including the addition of atomic fluorescence methods for mercury and arsenic, the cancellation of outdated dithizone spectrophotometry methods, and the inclusion of new capillary gas chromatography methods in the informative appendices.

How does GB 17378.6-2007 differ from general international environmental testing standards?

The standard provides multiple analytical techniques for each parameter, including flame and flameless atomic absorption, anodic stripping voltammetry, and spectrophotometry. For dispute resolution, the standard explicitly designates specific arbitration methods for elements like mercury, copper, arsenic, and selenium.

The summary above provides a high-level overview of GB 17378.6-2007. To ensure complete compliance for your marine monitoring projects entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 17378.6-2007 today to access all detailed parameters, standard curves, and testing procedures.

Indications d’applicabilité

Type: Protection de l’environnement
CCS: A45
ICS: 07.060
Autorité compétente: Ministry of Natural Resources (Marine)
Comité technique: National Technical Committee on Marine of Standardization Administration of China

Relations

Remplace:GB 17378.6-1998