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GB/T 16416-2007 English PDF

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US$139.00 · In stock
Delivery: <= 2 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 16416-2007: Method of extraction for the determination of sodium and potassium in brown coal soluble in dilute hydrochloric acid
Status: Valid

GB/T 16416: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 16416-2007	139	Add to Cart	2 days	Method of extraction for the determination of sodium and potassium in brown coal soluble in dilute hydrochloric acid	Valid
GB/T 16416-1996	199	Add to Cart	2 days	Method of extraction for the determination of sodium and potassium in brown coal soluble in dilute hydrochloric acid	Obsolete

Similar standards

GB/T 16659 GB/T 18511 GB/T 16415 GB/T 19494.1

Basic data

Standard ID: GB/T 16416-2007 (GB/T16416-2007)
Description (Translated English): Method of extraction for the determination of sodium and potassium in brown coal soluble in dilute hydrochloric acid
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D21
Classification of International Standard: 73.040
Word Count Estimation: 5,564
Date of Issue: 2007-11-01
Date of Implementation: 2008-06-01
Older Standard (superseded by this standard): GB/T 16416-1996
Quoted Standard: GB 474
Adopted Standard: ISO 1952-1976, NEQ
Regulation (derived from): National Standard Approval Announcement 2007 No.12 (Total No.112)
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 method for the extraction of coal soluble in dilute hydrochloric acid, sodium and potassium. This standard applies to lignite.

GB/T 16416-2007: Method of extraction for the determination of sodium and potassium in brown coal soluble in dilute hydrochloric acid

---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.
Method of extraction for the determination of sodium and potassium in brown coal soluble in dilute hydrochloric acid ICS 73.040 D21 National Standards of People's Republic of China Replacing GB/T 16416-1996 Coal soluble in dilute hydrochloric acid, sodium and potassium Extraction method determination (ISO 1952. 1976, Browncoalslignites-Methodof andpotassiumsolubleindilutehydrochloricacid, NEQ) Posted 2008-06-01 2007-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard and ISO 1952. 1976 "lignite coal and firewood --- dissolved in dilute hydrochloric acid, sodium and potassium extraction method for the determination" corresponds to its consistency Not equivalent. The main differences are. --- Normative references differ (see Chapter 2), this standard is cited Chinese national standard; --- Precision different (Chapter 9 of this standard, ISO 1952. 1976 in Chapter 8), this standard repeatability limit and ISO 1952. 1976 different reproducibility critical difference is not given. This standard replaces GB/T 16416-1996 "method of extracting coal soluble in dilute hydrochloric acid, sodium and potassium determination using." This standard compared with GB/T 16416-1996, the major change is made to modify the text and format. The standard proposed by China Coal Industry Association. This standard by the National Standardization Technical Committee of Coal. This standard was drafted. CCRI coal analysis laboratory. The main drafters of this standard. Shi Yuying, Zhang Ke Rui, Zhou Yiqun. This standard replaces the previous version of the release of case. GB/T 16416-1996. Coal soluble in dilute hydrochloric acid, sodium and potassium Extraction method determination

1 Scope

This standard specifies the method for the extraction of coal soluble in dilute hydrochloric acid, sodium and potassium. This standard applies to lignite.

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, undated reference documents, the latest versions apply to this standard. GB 474 coal sample preparation

3 PRINCIPLE OF THE METHOD

With boiling 0.005mol/L dilute hydrochloric acid and extracted directly in the form of humic acid salt or inorganic alkali metal is present as sodium, potassium from the coal samples, Then any accurate method of determining a solution of sodium and potassium.

4 Reagents

4.1 hydrochloric acid solution. Ba (HCl) = 0.005mol/L, amount of 0.4mL hydrochloric acid (GB/T 622) diluted with water to 1L, shake spare. 4.2 ethanol (GB/T 679). 95% (volume fraction), AR.

5 Equipment

5.1 flame atomic absorption spectrophotometer or photometer. 5.2 Analysis of balance. a sense of the amount of 0.1mg. 5.3 Electric board. voltage is adjustable. 5.4 Laboratory centrifuges.2000r/min. 5.5 polyethylene tube. 80mL ~ 100mL. 5.6 polyethylene bottles. minimum capacity 250mL. 5.7 volumetric flask. 250mL. 5.8 conical flask. 250mL. 5.9 long-necked funnel. Preparation 6 samples Air-dried coal sample, stored in a covered container in preparation according to GB 474 less than 0.2mm in size and capacity of the container is filled to 80% the above.

7 Procedure

Weigh about 1.5g (weighing accuracy of 0.0002g) coal samples in a conical flask, wetted with ethanol 3mL added 100mL of hydrochloric acid solution, and the thing Hot plate preheated slow boil 15min, remove the cooling, the extract and move all the residue of polyethylene centrifuge tube, and ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 16416-2007_English be delivered?

Answer: Upon your order, we will start to translate GB/T 16416-2007_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 2 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 16416-2007_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 16416-2007_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.

Question 5: Should I purchase the latest version GB/T 16416-2007?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 16416-2007 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.