Product parameter testing

This part of GB 17378 specifies the determination method for residual harmful substances in marine organisms such as mussels, shrimp, and fish, and puts forward technical requirements for sample collection, transportation, storage, pretreatment, and calculation of measurement results. This section is applicable to the investigation and monitoring of marine biological pollution in the ocean, nearshore, and coastal waters

2 Normative References: The clauses in the following documents are referred to in this part of GB 17378 and become the clauses of this part. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions do not apply to this section. However, parties to agreements based on this section are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this section. GB 17378.3 Marine Monitoring Specification Part 3: Sample Collection, Storage and Transportation GB 17378.4 Marine Monitoring Specification Part 4: Seawater Analysis GB 17378.5: Marine Monitoring Specification Part 5: Sediment Analysis 3 Terms and Definitions The following terms and definitions apply to this part of GB 17378. 3.1 Steam to nearly a thousand evaporation to dryness solvent and evaporate to a small volume (0.2 mL~0 3 mL), leaving residue in a moist state. 3.2 Standard Line The scale line used to measure the volume of a container. [GB 17378.5-2007, Definition 3.1] 4 General Provisions 4.1 Collection and Preparation of Samples 4.1.1 Sampling Species Shellfish, Shrimp, and Fish. Shellfish are generally collected from Filipino clams, clams, four horned cockroaches, purple mussels, jade mussels, hairy waxes, constricted leeches, and monk hat oysters. 4.1.2 Reagent 4.1.2.1 Deionized water or equivalent distilled water should have a trace metal content lower than the detection limit of the analytical method, or use uncontaminated seawater. 4.1.2.2 Synthetic detergent. 4.1.3 Instruments and Equipment Instruments and equipment are as follows: "- Plastic freezer: equipped with ice bags. When used for storage and transportation of mussels, there should be grating plates at the bottom to prevent the sample from being immersed in water—— Refrigerator; - Low temperature refrigerator—— One - Plastic board and ruler: used for length measurement

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