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Determination of lead, cadmium, arsenic, mercury in fruit juice for import and export. Atomic fluorescence spectrometric method
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SN/T 2006-2007
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Basic data | Standard ID | SN/T 2006-2007 (SN/T2006-2007) | | Description (Translated English) | Determination of lead, cadmium, arsenic, mercury in fruit juice for import and export. Atomic fluorescence spectrometric method | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | X24 | | Classification of International Standard | 67.080.10 | | Word Count Estimation | 16,189 | | Date of Issue | 2007-12-24 | | Date of Implementation | 2008-07-01 | | Regulation (derived from) | ?Industry Standard Filing Announcement 2008 No.2 (Total No.98); National-accreditation-Science (2011) 63 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the juice of lead, mercury atomic fluorescence spectrometry detection methods, arsenic, cadmium. This standard applies to fruit juices lead, cadmium, arsenic, mercury testing. | SN/T 2006-2007: Determination of lead, cadmium, arsenic, mercury in fruit juice for import and export. Atomic fluorescence spectrometric method
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Determination of lead, cadmium, arsenic, mercury in fruit juice for import and export.Atomic fluorescence spectrometric method
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Importers juice of lead, cadmium, arsenic, mercury detection method
Atomic Fluorescence Spectrometry
Posted 2007-12-24
2008-07-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
Appendix A of this standard is an informative annex.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard by the People's Republic of China Shaanxi Exit Inspection and Quarantine is responsible for drafting.
The main drafters of this standard. Le love mountains, Zhang Xinzhi Zhao received Chong, Chang-Zhao.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Importers juice of lead, cadmium, arsenic, mercury detection method
Atomic Fluorescence Spectrometry
1 Scope
This standard specifies the method of atomic fluorescence spectrometric detection juice of lead, cadmium, arsenic and mercury.
This standard applies to fruit juice of lead, cadmium, arsenic, mercury detection.
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 6682-1992 analytical laboratory use specifications and test methods (neq ISO 3696)
3 Method summary
After the sample digestion, lead, arsenic and potassium borohydride reaction of volatile hydrides, mercury and potassium borohydride reaction atom in a particular medium
Mercury, cadmium and cadmium potassium borohydride reaction volatiles loaded by argon quartz atomizer, in the hollow cathode lamp irradiation launch
A characteristic wavelength of fluorescence, and fluorescence intensity is proportional to the determination of element content, compared with standard series quantitation.
4 Reagents and materials
Unless otherwise specified, the reagents were of analytical grade, water, deionized water (in line with GB/T 6682-1992 of 4.2 two water regulation
set).
4.1 Nitric acid. pure class distinctions.
4.2 hydrochloride. pure class distinctions.
4.3 ascorbic acid.
4.4 potassium hydroxide.
4.5 ferricyanide.
Thiourea 4.6.
4.7 potassium borohydride.
4.8 solution of nitric acid (1 + 99) Vp/Vp.
4.9 nitric acid solution (2 + 98) Vp/Vp.
4.10 hydrochloric acid solution (2 + 98) Vp/Vp.
4.11 hydrochloric acid solution (5 + 95) Vp/Vp.
4.12 ascorbic acid solution (50g/L). Weigh 5.0g ascorbic acid (4.3), dissolved in water and diluted to 100mL, and mix with a time of existing service.
4.13 potassium hydroxide (10g/L). Weigh 10.0g of potassium hydroxide (4.4), dissolved in water and diluted to 1000mL, and mix.
4.14 potassium hydroxide (5g/L). Weigh 5.0g of potassium hydroxide (4.4) dissolved in water and diluted to 1000mL, and mix.
4.15 thiourea solution (50g/L). Weigh 5.0g thiourea (4.6), was dissolved in 100mL of water, and mix with a time now equipped.
4.16 potassium borohydride (10g/L) mixed solution. Weigh 10.0g potassium borohydride (4.7), 10.0g of potassium ferricyanide (4.5), dissolved in potassium hydroxide
(4.13) diluted to 1000mL, and mix with a time of existing service.
4.17 potassium borohydride (30g/L) mixed solution. Weigh 30.0g potassium borohydride (4.7), dissolved in potassium hydroxide (4.14) and diluted to
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