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GB/T 14506.23-2010 English PDF

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US$259.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 14506.23-2010: Methods for chemical analysis of silicate rocks -- Part 23: Determination of chromium content
Status: Valid

GB/T 14506.23: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 14506.23-2010	259	Add to Cart	3 days	Methods for chemical analysis of silicate rocks -- Part 23: Determination of chromium content	Valid
GB/T 14506.23-1993	239	Add to Cart	2 days	Silicate rocks. Determination of chromium	Obsolete

Similar standards

YB/T 4019 GB/T 5195.1 GB/T 5195.12 GB/T 14506.32 GB/T 14506.31 GB/T 14506.15

Basic data

Standard ID: GB/T 14506.23-2010 (GB/T14506.23-2010)
Description (Translated English): Methods for chemical analysis of silicate rocks -- Part 23: Determination of chromium content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D53
Classification of International Standard: 73.080
Word Count Estimation: 11,123
Date of Issue: 2010-11-10
Date of Implementation: 2011-02-01
Older Standard (superseded by this standard): GB/T 14506.23-1993
Quoted Standard: GB/T 6682; GB/T 14506.1
Regulation (derived from): National Standard Approval Announcement 2010 No.8 (Total No.163)
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 determination of chromium content. Applies to the amount of chromium in the determination of silicate rocks in this section, also applies to the measurement of soil and river sediment Dian amount, measuring range: diphenyl two hydrazine spectrophotometry, l0��g/g ~ 2 000��g/g of ammonia-ammonium hydrogen-��, ��-dipyridyl-sodium nitrite-sodium sulfite medium polarographic method, , chromium content l0��g/g ~ 150��g/g of chromium content. Warning: Use of this person should be a regular part of the laboratory work experience. This section does not indicate that all possible safety problems. Users are responsible for taking appropriate safety and health practices, and to ensure compliance with the relevant conditions of the national regulations.

GB/T 14506.23-2010: Methods for chemical analysis of silicate rocks -- Part 23: Determination of chromium content

---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.
Methods for chemical analysis of silicate rocks Part 23. Determination of chromium content ICS 73.080 D53 National Standards of People's Republic of China Replacing GB/T 14506.23-1993 Silicate rocks - Part 23. Determination of chromium Part 23. Determinationofchromiumcontent Issued on. 2010-11-10 2011-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 14506 "Methods for chemical analysis of silicate rocks" 30 consists of the following components. --- Part 1. Determination of water absorption; --- Part 2. Determination of combined water; --- Part 3. Determination of the amount of silica; --- Part 4. Determination of the amount of aluminum oxide; --- Part 5. Determination of total iron content; --- Part 6. Determination of calcium oxide content; --- Part 7. Determination of the amount of magnesium oxide; --- Part 8. Determination of the amount of titanium dioxide; --- Part 9. Determination of the amount of phosphorus pentoxide; --- Part 10. Determination of the amount of manganese oxide; --- Part 11. Determination of the amount of sodium hydroxide and oxide; --- Part 12. Determination of the amount of fluorine; --- Part 13. Determination of sulfur content; --- Part 14. Determination of ferrous oxide; --- Part 15. Determination of the amount of lithium; --- Part 16. Determination of the amount of rubidium; --- Part 17. Determination of the amount of strontium; --- Part 18. Determination of copper content; --- Part 19. Determination of lead content; --- Part 20. Determination of the amount of zinc; --- Part 21. Determination of the amount of nickel and cobalt; --- Part 22. Determination of the amount of vanadium; --- Part 23. Determination of chromium; --- Part 24. Determination of cadmium content; --- Part 25. Determination of molybdenum and tungsten; --- Part 26. Determination of cobalt content; --- Part 27. Determination of nickel content; --- Part 28. Determination of the amount of 16 major and minor components; Part --- 29. 22 the amount of rare earth element determination; --- Part 30. Determination of the amount of 44 elements. This section GB/T 14506 part of 23. This Part replaces GB/T 14506.23-1993 "Silicate rocks - Determination of chromium." Section compared with the GB/T 14506.23-1993 main change this as follows. --- Increasing the normative references; --- Increased alert, warnings; --- The weighed sample quantity and dispensing solutions to a list representation. This section presents the People's Republic of China Ministry of Land Resources. This part of the National Standardization Technical Committee under the jurisdiction of Land and Resources. This section drafted by. National Geological Experimental Test Center. The main drafters of this section. Wangsu Ming, Yan Maohong. This part of the standard replaces the previous editions are. --- GB/T 14506.23-1993. Silicate rocks - Part 23. Determination of chromium Warning --- Use this section shall be a person experiences regular laboratory work. This section does not point out all possible security asked question. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

GB/T 14506 provisions of this part of the determination of chromium content in silicate rocks. This section applies to the amount of chromium in the determination of silicate rocks, is also applicable to the measurement of soil and stream sediments chromium content. Measurement range. diphenyl carbon dihydrazide spectrophotometry, 10μg/g ~ 2000μg/g of chromium content. Ammonia - ammonium chloride -α, α- bipyridyl - nitrosyl Sodium - sodium sulfite medium polarographic method, 10μg/g ~ 150μg/g of chromium content.

2 Normative references

The following documents contain provisions which, through reference GB/T 14506 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 14506.1 Silicate rocks - Part 1. Determination of water adsorption 3-diphenyl-carbon acid dihydrazide spectrophotometry 3.1 Principle Sample alkali fusion sodium peroxide decomposition, water extraction, dry filter, take part serum in sulfuric acid (0.1mol/L) medium, hexavalent chromium and two Phenyl carbon dihydrazide form soluble purple complex, on a spectrophotometer, a wavelength of 540nm measured absorbance, calculate the amount of chromium. 3.2 Reagents Unless otherwise stated in this section are consistent with the use of analytical reagent and GB/T 6682 analytical laboratory use in the analysis. 3.2.1 Sodium peroxide (powder). 3.2.2 sodium hydroxide. 3.2.3 Silica (spectroscopically pure). 3.2.4 ferric oxide (high purity). 3.2.5 sulfuric acid (11). Warning --- improper dilution risk prone 3.2.6 sulfuric acid (15). Warning --- improper dilution risk prone 3.2.7 phosphoric acid (12). 3.2.8 Ammonia (11). 3.2.9 diphenyl carbon acid dihydrazide solution (20g/L). Weigh 2g potassium o-phthalic anhydride, placed in 150mL beaker, add 100mL acetone, In a water bath warmed to dissolve, then weighed 0.2000g diphenyl carbon acid dihydrazide dissolved in the solution, the solution was transferred to a brown bottle and placed Shadows. 3.2.10 chromium standard solution. a) a standard solution of chromium (100.0μg/mL). Weigh 0.2829g baseline potassium dichromate (pre-bake at 150 ℃ for 1h placed in the dryer to cool to room temperature), placed in 100mL ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 14506.23-2010_English be delivered?

Answer: Upon your order, we will start to translate GB/T 14506.23-2010_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 GB/T 14506.23-2010_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 14506.23-2010_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.

Question 5: Should I purchase the latest version GB/T 14506.23-2010?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 14506.23-2010 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.