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GB/T 15072.7-2008 English PDF

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Q: Should I purchase the latest version GB/T 15072.7-2008?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 15072.7-2008 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.

US$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 15072.7-2008: Test method of precious metal alloys -- Determination of chromium and iron contents for gold alloys -- Inductively coupled plasma atomic emission spectrometry
Status: Valid

GB/T 15072.7: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 15072.7-2008	189	Add to Cart	3 days	Test method of precious metal alloys -- Determination of chromium and iron contents for gold alloys -- Inductively coupled plasma atomic emission spectrometry	Valid
GB/T 15072.7-1994	199	Add to Cart	2 days	Gold alloys-Determination of chromium content	Obsolete

Similar standards

GB/T 17472 GB/T 17473.2 GB/T 17473.5 GB/T 15072.1 GB/T 15072.12 GB/T 15072.11

Basic data

Standard ID: GB/T 15072.7-2008 (GB/T15072.7-2008)
Description (Translated English): Test method of precious metal alloys -- Determination of chromium and iron contents for gold alloys -- Inductively coupled plasma atomic emission spectrometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H68
Classification of International Standard: 77.120.99
Word Count Estimation: 8,896
Date of Issue: 2008-03-31
Date of Implementation: 2008-09-01
Older Standard (superseded by this standard): GB/T 15072.18-1994; GB/T 15072.7-1994; GB/T 15072.19-1994
Quoted Standard: YS/T 371
Regulation (derived from): National Standard Approval Announcement 2008 No.5 (Total No.118)
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 determination of gold alloy of chromium and iron content. This section applies to AuNiCr, determination AuFeCr and AuNiFeZr alloy of chromium and iron content. Measuring range (mass fraction): 0. 5% to 7%.

GB/T 15072.7-2008: Test method of precious metal alloys -- Determination of chromium and iron contents for gold alloys -- Inductively coupled plasma atomic emission 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.
Test method of precious metal alloys. Determination of chromium and iron contents for gold alloys. Inductively coupled plasma atomic emission spectrometry ICS 77.120.99 H68 National Standards of People's Republic of China Replacing GB/T 15072.7-1994, GB/T 15072.18-1994, GB/T 15072.19-1994 Precious metal alloys - Determination of gold alloy of chromium and iron content Inductively coupled plasma atomic emission spectrometry Posted 2008-03-31 2008-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard is GB/T 15072-1994 "precious metals and their alloys -" (all parts) the integration of amendments into Part 19. Determination --- GB/T 15072.1-2008 Methods for chemical analysis of precious metal alloys of gold, platinum, palladium, gold alloy amount of ferrous sulfate Potentiometric titration; --- GB/T 15072.2-2008 Methods for chemical analysis of precious metal alloys silver alloys Determination of silver content of sodium chloride potential drop Titration; --- GB/T 15072.3-2008 Methods for chemical analysis of precious metal alloys of gold, platinum, palladium, platinum alloys determining the amount of potassium permanganate Current titration; --- GB /15072.4-2008 Methods for chemical analysis of precious metal alloys of palladium, silver-palladium alloy determining the amount of T-dimethyl glyoxal Gravimetric method; --- GB/T 15072.5-2008 Methods for chemical analysis of precious metal alloys of gold, measuring the potential of potassium iodide palladium alloy of silver content drops Titration; --- GB/T 15072.6-2008 precious metal alloys - Determination of platinum, palladium, iridium alloy in determining the amount of ferrous sulfate Current titration; --- GB/T 15072.7-2008 precious metal alloys - Gold alloys chromium and iron content - Inductively coupled plasma Plasma atomic emission spectrometry; --- GB/T 15072.8-2008 precious metal alloys - gold, palladium, silver and copper alloys - Determination of the amount of precipitation thiourea EDTA complexometric back titration; --- GB/T 15072.9-2008 precious metal alloys - Gold alloys - Determination of the amount of indium by EDTA back drop Titration; --- GB/T 15072.10-2008 precious metal alloys - Gold alloys - Determination of nickel by EDTA back drop Titration; --- GB/T 15072.11-2008 precious metal alloys - gold alloy of gadolinium and beryllium content - Inductively coupled plasma Plasma atomic emission spectrometry; --- GB T 15072.12-2008 precious metal alloys - Silver alloys - Determination of vanadium content/hydrogen peroxide spectrophotometer Law degree; --- GB/T 15072.13-2008 precious metal alloys - Tin in silver, cerium and lanthanum content - Inductively coupled Plasma atomic emission spectrometry; --- GB/T 15072.14-2008 precious metal alloys - silver alloy of aluminum and nickel content - Inductively coupled plasma Plasma atomic emission spectrometry; --- GB T 15072.15-2008 precious metal alloys - gold, silver, palladium alloy of nickel, zinc and manganese contents / Inductively coupled plasma atomic emission spectrometry; --- GB/T 15072.16-2008 precious metal alloys - gold alloy of copper and manganese content - Inductively coupled plasma Plasma atomic emission spectrometry; --- GB/T 15072.17-2008 precious metal alloys - Determination of tungsten content of a platinum alloy of tungsten trioxide weight Method; --- GB/T 15072.18-2008 precious metal alloys - Gold alloys of zirconium and gallium content - Inductively coupled plasma Plasma atomic emission spectrometry; --- GB/T 15072.19-2008 precious metal alloys - silver vanadium alloys and magnesium content - Inductively coupled plasma Plasma atomic emission spectrometry. This section GB/T 15072-2008 Part 7. This Part replaces GB/T 15072.7-1994 and GB/T 15072.19-1994 "precious metals and their alloys - Gold Measuring the amount of chromium alloys Determination "and GB/T 15072.18-1994" precious metals and their alloys - Gold alloys of iron content set". This portion of the GB/T 15072.7-1994, GB/T 15072.19-1994 and GB/T 15072.18-1994 compared to the main like Under changes. --- The original three standards into a revised standard, the GB/T 15072.7-1994 and GB/T 15072.19- 1994's "precious metals and their alloys - Gold alloys - Determination of chromium content" and GB/T 15072.18-1994 of "Precious metals and their alloys - Gold alloys - Determination of iron content" Merge amended to "precious metal alloys - party Fagin alloy of chromium and iron content - Inductively coupled plasma atomic emission spectrometry "; --- By inductively coupled plasma atomic emission spectrometry instead of the original criteria used coulometry, ferrous sulfate titration and spectrophotometry Law degree; --- The scope of the original standard method AuNiCr5-1, AuNiCr5-2, AuNiFeZr9-2-0.3, AuNiFeZr5-1.5-0.3 together Gold extended to AuNiCr, AuFeCr and AuNiFeZr series alloys, which AuFeCr of new series; --- Chromium measurement range (mass fraction) from 0.5% to 3% expansion to 0.5% to 7%; iron from 1% to 3% expansion to 0.5% to 7%; --- Repeatability and allows the use of relatively poor poor allowed to replace the original criteria used. Appendix A of this section is an informative annex. This part is proposed by the China Nonferrous Metals Industry Association. The non-ferrous metal part by the National Standardization Technical Committee. This section is your research Platinum Ltd. is responsible for drafting. The main drafters of this section. Fang Wei, Luo Yijiang, Ma Yuan, Li Kai, and Li Guangli, Zhu Wuxun. This part certifier. and He Ping, Sun Xiaodong. This part of the standard replaces the previous editions are. --- GB/T 15072.7-1994, GB/T 15072.19-1994, GB/T 15072.18-1994. Precious metal alloys - Determination of gold alloy of chromium and iron content Inductively coupled plasma atomic emission spectrometry

1 Scope

This section provides the determination of gold alloy of chromium and iron content. This section applies to AuNiCr, measured AuFeCr and AuNiFeZr alloy of chromium and iron content. Measurement range (mass fraction). 0.5% to 7%.

2 Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section. 371 precious metal alloys - General rules and regulations YS/T

3 Method summary

Samples with hydrochloric acid - nitric acid mixture dissolved sulfite reduction and separation of gold, yttrium is added as an internal standard by inductively coupled plasma atomic emission spectrometry Act (hereinafter referred to as ICP-AES) was measured to calculate the mass fraction of iron and chromium.

4 Reagents and materials

Unless otherwise indicated, this part of the reagents and materials shall comply with the provisions of YS/T 371's. 4.1 Argon ((Ar) ≥99.99%). 4.2 hydrochloride (ρ1.19g/mL). Nitrate 4.3 (ρ1.42g/mL). 4.4 hydrochloric acid - nitric acid mixture (3 + 1), when using the existing service. Hydrochloride 4.5 (1 + 9). 4.6 sulfite (to SO2, at a level of not less than 6%). 4.7 Chromium stock standard solution. Accurately weigh 0.1000g chromium ((Cr) ≥99.99%), placed in 200mL beaker. Join 5mL hydrochloric acid (4.2) and 2mL nitric acid (4.3), cover the surface of the pan, over low heat until dissolved completely. Transferred to 100mL container with hydrochloric acid (4.5) Volumetric flask and dilute to the mark. Mix well. This solution 1mL 1mg containing chromium. 4.8 iron stock standard solution. Accurately weigh 0.1000g metallic iron ((Fe) ≥99.99%), placed in 200mL beaker. Join 10mL mixed acid (4.4), cover the surface of the pan, over low heat until dissolved completely evaporated to about 5mL. Transferred to 100mL container with hydrochloric acid (4.5) Volumetric flask and dilute to the mark. Shake well. 1mL solution containing 1mg iron. 4.9 yttrium internal standard solution. Weigh 0.1270g yttria ((Y2O3) ≥99.99%), placed in 200mL beaker. Join 5mL 5mL water and hydrochloric acid (4.2), cover the surface of the pan, over low heat until dissolved completely. Cooling to room temperature, transferred to 100mL capacity with hydrochloric acid (4.5) Flask and dilute to the mark. Mix well. 1mL solution containing 1mg yttrium.

5 Instruments

ICP-AES instrument. Under optimum working conditions for those who can reach the following indicators can be used. ......

Image

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 15072.7-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 15072.7-2008_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 15072.7-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 15072.7-2008_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 15072.7-2008?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 15072.7-2008 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.