GB/T 22331-2008 English PDF

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GB/T 22331-2008: Determination of polychlorinated biphenyls residues in fishery products -- Gas chromatography
Status: Obsolete

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22331-2008	279	Add to Cart	3 days	Determination of polychlorinated biphenyls residues in fishery products -- Gas chromatography	Obsolete

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Basic data

Standard ID: GB/T 22331-2008 (GB/T22331-2008)
Description (Translated English): Determination of polychlorinated biphenyls residues in fishery products -- Gas chromatography
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: B50
Classification of International Standard: 67.050
Word Count Estimation: 7,731
Date of Issue: 2008-08-22
Date of Implementation: 2008-12-01
Quoted Standard: GB/T 6682
Regulation (derived from): National Standard Approval Announcement 2008 No.14 (Total No.127)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the aquatic products PCB 28, PCB 52, PCB 101, PCB 118, PCB 138, PCB 153 and PCB 180 seven PCBs can reflect the indicative amount of residual monomer vapor PCB contamination situation chromatographic method. This standard applies to the determination of PCBs residues in aquatic edible part.

GB/T 22331-2008: Determination of polychlorinated biphenyls residues in fishery products -- Gas chromatography

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of polychlorinated biphenyls residues in fishery products. Gas chromatography ICS 67.050 B50 National Standards of People's Republic of China Determination of PCBs residues in aquatic products Gas chromatography Posted 2008-08-22 2008-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

Appendix A of this standard is an informative annex. The standard proposed by the People's Republic of China Ministry of Agriculture. This standard by the National Standardization Technical Committee of Fisheries Aquatic Products Processing Technical Committee. This standard was drafted. National Aquatic Product Quality Supervision and Inspection Center. The main drafters of this standard. Cold Kai Liang, Sun Wei Hong, Wang Lian Chu, Diyu Xiu, New Approach to, Wang Zhijie. Determination of PCBs residues in aquatic products Gas chromatography

1 Scope

This standard specifies the fish in PCB28, PCB52, PCB101, PCB118, PCB138, PCB153 and PCB180 seven kinds of energy Gas chromatographic method reflect enough of PCB-contaminated condition indicative of PCBs monomer residues. This standard applies to the determination of polychlorinated biphenyls residues in aquatic products edible part.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD) Principle 3 PCBs sample residue was subjected to ultrasonic extraction, purification by silica gel column purification of concentrated sulfuric acid, concentrated use with electron capture detector Gas chromatography, internal standard.

4 Reagents

All reagents PCBs peaks should be no interfering peaks, test water should comply with GB/T 6682 a water requirements. 4.1 hexane. chromatographically pure. 4.2 acetone. chromatography. 4.3 Concentrated sulfuric acid. pure class distinctions. 4.4 silica gel. chromatography, particle size of 0.075mm ~ 0.150mm; drying 2h at 150 ℃, cooled and then stored in an airtight container in the back. 4.5 deactivated silica gel. activated silica gel was added to the 10% drop of living water, stirring to evenly disperse after standing overnight use. 4.6 acidified silica gel. 30g of concentrated sulfuric acid was added 15mL activated silica gel, stirred to disperse evenly into the grinding mouth stoppered vial, dried It is saved. 4.7 anhydrous sodium sulfate. AR, 650 ℃ high temperature burning 4h, cooled and then stored in an airtight container in the back. 4.8 PCBs mixed standard solution. PCB28, PCB52, PCB101, PCB118, PCB138, PCB153 and PCB180 each single Concentration body are 10μg/mL. 4.9 PCB209 quantitative internal standard solution. 10μg/mL. 4.10 PCBs mixed standard solution. 0.2μg/mL. Accurate Pipette 200μL PCBs mixed standard solution (4.8) to 10mL volumetric flask, dilute to the mark with n-hexane. 4 ℃ refrigerator to save, can be used for 3 months. 4.11 PCB209 quantified using internal standard solution. 0.2μg/mL. Pipette 200μLPCB209 accurate quantitative internal standard solution (4.9) in 10mL volumetric flask, dilute to the mark with n-hexane. 4 ℃ refrigerator to save, can be used for 3 months. 4.12 mixed standard working solution. accurate Pipette the appropriate amount of PCBs mixed standard solution (4.10) and PCB209 quantitative internal standard so Solution (4.11), with n-hexane dubbed 0.001μg/mL, 0.002μg/mL, 0.01μg/mL, 0.05μg/mL, 0.18μg/mL Department Column concentrations of PCBs in the standard working solution, internal standard at a concentration of 0.02μg/mL. ......

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