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SN/T 1634-2005 English PDF

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US$319.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 1634-2005: Determination of cadmium, chromium, lead and mercury in corrugated boards
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1634-2005	319	Add to Cart	3 days	Determination of cadmium, chromium, lead and mercury in corrugated boards	Valid

Similar standards

GB/T 21331 GB/T 6544 GB/T 6545 SN/T 5721 SN/T 5717

Basic data

Standard ID: SN/T 1634-2005 (SN/T1634-2005)
Description (Translated English): Determination of cadmium, chromium, lead and mercury in corrugated boards
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: Y31
Classification of International Standard: 85.060
Word Count Estimation: 10,193
Date of Issue: 2005-08-18
Date of Implementation: 2006-02-01
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary: This standard specifies the corrugated cardboard of cadmium, chromium, lead, mercury method. This standard applies to all kinds of available nitric acid wet digestion of paper, paperboard and pulp cadmium, chromium, lead, mercury content.

SN/T 1634-2005: Determination of cadmium, chromium, lead and mercury in corrugated boards

---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 cadmium, chromium, lead and mercury in corrugated boards Book of the People's Republic of China Entry and Exit Inspection and Quarantine Determination of cadmium, chromium, lead and mercury in corrugated cardboard Released on.2005-08-18 2006-02-01 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued

Foreword

Appendix A and Appendix B of this standard are informative annexes. This standard is proposed and managed by the National Certification and Accreditation Administration. This standard is mainly drafted by. Shenzhen Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this standard. Xu Wei, Chen Xuhui, Jiang Yan, Gu Haofei. This standard is the first industry standard for entry-exit inspection and quarantine. Determination of cadmium, chromium, lead and mercury in corrugated cardboard

1 Scope

This standard specifies the determination method of cadmium, chromium, lead and mercury in corrugated board. This standard is applicable to the detection of cadmium, chromium, lead and mercury in paper, paperboard and pulp which can be used for wet digestion of nitric acid.

2 Normative references

The terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study Is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard. GB/T 450 paper and paperboard samples (GB/T 450-2002, ISO 186.1994, MOD) GB/T 741 pulp analysis sample moisture determination method (GB/T 741-2003, ISO 638.1989, MOD) GB/T 6682 Analytical laboratory water specifications and test methods (GB/T 6682-1992, ISO 3696.1987, NEQ)

3 Terms and definitions

The following terms and definitions apply to this standard. 3.1 The mass of the sample when the sample moisture is in equilibrium with the surrounding environment. 3.2 Samples when moisture is in equilibrium with the surrounding environment. 3.3 Dry at 105 ° C ± 2 ° C to remove moisture and other volatile materials and dry to constant weight sample quality.

4 Principle

The sample is placed in a closed container, a certain amount of nitric acid solution is added, and the solution is digested under high temperature and high pressure conditions, and the digested solution is appropriately diluted. After release, the contents of lead, cadmium and chromium were determined by atomic absorption spectrometry, and the content of mercury was determined by atomic fluorescence spectrometry.

5 reagents and materials

Unless otherwise stated, only reagents identified as superior grade were used in the analysis. 5.1 Water, GB/T 6682, Level 2. 5.2 Nitric acid (HNO3), 1.40g/mL, mass fraction is 65% to 68%. 5.3 Nitric acid (HNO3), 1+1, 100 mL of nitric acid (5.2) was added to a volume of 100 mL of water. 5.4 Nitric acid (HNO3), 5+95, dilute to 1L with 50mL of nitric acid (5.2) and water. 5.5 potassium borohydride solution (KBH4, analytical grade), 0.05% (in 0.5% KOH solution), weigh 0.5g potassium hydroxide (analytical grade) After dissolving in 100 mL of distilled water, 0.05 g of potassium borohydride was added to continue to dissolve. If there was precipitation, it was filtered and used. 5.6 cadmium standard stock solution, 100mg/L, weigh 0.1142g cadmium oxide (CdO), add 20mL of nitric acid (5.3) to dissolve, use nitric acid (5.4) Dilute to 1L. The solution is stored in a closed polyethylene container. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of SN/T 1634-2005_English be delivered?

Answer: Upon your order, we will start to translate SN/T 1634-2005_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 1634-2005_English with my colleagues?

Answer: Yes. The purchased PDF of SN/T 1634-2005_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.