SN/T 0393: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 0393-2013 | English | RFQ |
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6 days [Need to translate]
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Determination of total mercury in seafood for exports
| Obsolete |
SN/T 0393-2013
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| SN/T 0393-1995 | English | 239 |
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2 days [Need to translate]
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Method for the inspection of mercury in fishery products for export
| Obsolete |
SN/T 0393-1995
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PDF similar to SN/T 0393-2013
Basic data | Standard ID | SN/T 0393-2013 (SN/T0393-2013) | | Description (Translated English) | Determination of total mercury in seafood for exports | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X20 | | Word Count Estimation | 26,276 | | Older Standard (superseded by this standard) | SN/T 0393-1995 | | Quoted Standard | GB/T 601; GB/T 6682 | | Regulation (derived from) | National quality recognition (2013) 569 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the total mercury content in fish export inspection methods. This standard is applicable to the export of aquatic products in the determination of total mercury. | SN/T 0393-2013: Determination of total mercury in seafood for exports---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 total mercury in seafood for exports
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Instead of the SN/T 0393-1995
Total mercury in aquatic products export inspection methods
Issued on. 2013-11-06
2014-06-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
Instead of the standard SN/T 0393-1995 "export of aquatic mercury content test method."
This standard compared with SN/T 0393-1995, in addition to editorial changes, the major technical changes are as follows.
--- Increased atomic fluorescence spectrometry (AFS) and inductively coupled plasma mass spectrometry (ICP-MS) as the first law of this standard and
The second method.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Shandong CIQ.
The main drafters of this standard. Jiang Zhigang, Wang Yanting, Zhang Shuai, Li Jing, Xu Qin, Rui Zong, Gao Jianguo, Gong Ziyi, even Reckoning, Lize Yao.
This standard replaces the standards previously issued as follows.
--- SN/T 0393-1995.
Total mercury in aquatic products export inspection methods
1 Scope
This standard specifies the content of mercury in aquatic products export inspection methods.
This standard applies to exports determination of total mercury in aquatic products.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
Preparation of GB/T 601 chemical reagent standard titration solution
Laboratory use specifications and test methods GB/T 6682 Analysis
Preparation and preservation of samples 3
3.1 Preparation of the sample
Take appropriate sample inspection of aquatic products edible parts, broken with a homogenizer and mix thoroughly, quartering reduced separation less than 250g, loaded Qing
Clean sample bags, sealed and marked with tags.
Save 3.2 sample
Samples frozen at -18 ℃. Fresh or frozen samples can be stored at 2 ℃ ~ 6 ℃ 72h.
First Atomic Fluorescence Spectrometry
Principle 4
Samples after microwave digestion in acidic medium, the test solution of potassium borohydride reduction of mercury into mercury atoms by a carrier gas (argon) into the original
Son of the vessel, at a special mercury hollow cathode lamp illumination, the ground state mercury atoms are excited to high energy state, the deactivation to the ground state, emitting characteristics
Wavelength fluorescence, and fluorescence intensity is proportional to the mercury content. Quantitative comparison with the standard series.
5 Reagents and Instruments
5.1 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical reagents, test water line with GB/T 6682 in two water
Provisions.
5.1.1 nitrate (excellent pure).
5.1.2 nitric acid solution (19, volume ratio).
5.1.3 nitric acid solution (5% volume fraction).
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