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SN/T 2679-2010 English PDF

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US$239.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 2679-2010: Determination of arsenic in wood and wood-based products. Hydride generation-atomic fluorescence spectrometry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 2679-2010	239	Add to Cart	3 days	Determination of arsenic in wood and wood-based products. Hydride generation-atomic fluorescence spectrometry	Valid

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Basic data

Standard ID: SN/T 2679-2010 (SN/T2679-2010)
Description (Translated English): Determination of arsenic in wood and wood-based products. Hydride generation-atomic fluorescence spectrometry
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: B69
Classification of International Standard: 79.010
Word Count Estimation: 9,933
Date of Issue: 2010-11-01
Date of Implementation: 2011-05-01
Quoted Standard: GB/T 6682
Regulation (derived from): National Quality Inspection (2010) 582
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the timber and wood products in arsenic hydride generation atomic fluorescence spectrometric method. This standard applies to the timber and wood products Determination of arsenic content.

SN/T 2679-2010: Determination of arsenic in wood and wood-based products. Hydride generation-atomic fluorescence spectrometry

---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 arsenic in wood and wood-based products.Hydride generation-atomic fluorescence spectrometry People's Republic of China Entry-Exit Inspection and Quarantine Standards Wood and wood products Determination of arsenic content Hydride Generation - Atomic Fluorescence Spectrometry Issued on. 2010-11-01 2011-05-01 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. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Fujian Exit Inspection and Quarantine. The main drafters of this standard. Lu water, Dai Jinlan, Liang Ming, Xu Ming before, Liu Wei, Li Xiaojing, Lin Boling. Wood and wood products Determination of arsenic content Hydride Generation - Atomic Fluorescence Spectrometry

1 Scope

This standard specifies the hydride timber and wood products in the arsenic content generation - atomic fluorescence spectrometric method. This standard applies to wood and wood products Determination of arsenic content.

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. Laboratory use specifications and test methods GB/T 6682 Analysis

3 Method summary

Wood samples were diluted sulfuric acid and hydrogen peroxide mixture treatment, quantitative leaching arsenic compound, the treated solution was filtered, added L- cysteine The pentavalent arsenic acid pre-reduced to trivalent arsenic in the reaction cell hydride and sodium borohydride, trivalent arsenic arsine generated by argon gas to export it The atomic fluorescence spectrometer, fluorescence wavelength at 193.7nm, compared with a standard curve for quantitative analysis.

4 Reagents

Unless otherwise stated, only recognized as analytical reagents and in line with two or more water GB/T 6682 regulations. 4.1 sulfuric acid (ρ = 1.84g/mL), pure class distinctions. 4.2 hydrochloric acid (ρ = 1.16g/mL ~ 1.19g/mL), pure class distinctions. 4.3 Hydrogen peroxide (30% aqueous solution). 4.4 sodium hydroxide. 4.5 of sodium borohydride. 4.6 L- cysteine. 4.7 sulfuric acid solution (2.5mol/L). In the case of cooling with stirring and careful addition of water to 1600mL 280mL sulfuric acid (4.1), Cold It was diluted to 2L. 4.8 3% hydrochloric acid (volume fraction). Pipette 30mL hydrochloric acid (4.2) in 1000mL volumetric flask, water volume. 4.9 10% hydrochloric acid (volume fraction). Pipette 100mL of hydrochloric acid (4.2) in 1000mL volumetric flask, water volume. 4.10 sodium hydroxide solution (5g/L). Weigh 5g of sodium hydroxide (4.4), was dissolved in 1000mL of water, and mix. 4.11 sodium hydroxide solution (10g/L) Weigh 1g of sodium hydroxide (4.4) dissolved in 100mL of water, and mix. 4.12 a solution of sodium borohydride (20g/L). Weigh 10g Sodium borohydride (4.5), was dissolved in 500mL sodium hydroxide solution (4.10) were mixed uniformly, Now with the current. 4.13 L- cysteine solution (100g/L). Weigh 20gL- cysteine (4.6), dissolved in water, can be added 3mL ~ 5mL hydrochloric acid (4.9) Or using ultrasound solubilization, diluted with water to 200mL. 4.14 arsenic standard stock solution (100μg/mL). Weigh accurately dried to constant weight in the benchmark arsenic trioxide dryer (As2O3) ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of SN/T 2679-2010_English be delivered?

Answer: Upon your order, we will start to translate SN/T 2679-2010_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of SN/T 2679-2010_English with my colleagues?

Answer: Yes. The purchased PDF of SN/T 2679-2010_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.