GB/T 30072-2025 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 30072-2025	RFQ	ASK	3 days	Ferronickel - Determination of nickel content - EDTA titrimetric method	Valid
GB/T 30072-2013	189	Add to Cart	3 days	Ferronickel -- Determination of nickel content -- EDTA titrimetric method	Valid

Basic data

Standard ID: GB/T 30072-2025 (GB/T30072-2025)
Description (Translated English): Ferronickel - Determination of nickel content - EDTA titrimetric method
Sector / Industry: National Standard (Recommended)
Date of Implementation: 2026-03-01
Older Standard (superseded by this standard): GB/T 30072-2013

GB/T 30072-2013: Ferronickel -- Determination of nickel content -- EDTA titrimetric method

---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.
Ferronickel.Determination of nickel content.EDTA titrimetric method ICS 77.100 H11 National Standards of People's Republic of China Nickel-iron and nickel content - EDTA titration Issued on. 2013-12-17 2014-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Iron and Steel Association. This standard by the national pig iron and ferroalloy Standardization Technical Committee (SAC/TC318) centralized. This standard was drafted. Sichuan Investment Emei Ferroalloy (Group) Co., Ltd. The main drafters of this standard. Fang Yan, Tang Hua Ying, Zhou Feihong, Liu Huili. Nickel-iron and nickel content - EDTA titration Warning. Use of this standard shall have a person experiences regular laboratory work. This standard does not point out all possible security issues. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

This standard specifies the determination of Ni in nickel content by EDTA titration. This standard applies to the determination of Ni in nickel content. Measurement range (mass fraction). 12.00% - 85.00%.

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. Inductively coupled plasma atomic GB/T 24585 nickel-phosphorus iron, manganese, chromium, copper, cobalt and silicon content Emission Spectrometry GB/T 24198 ferronickel, silicon, phosphorus, manganese, cobalt, chromium and copper content - Wavelength dispersive X- ray fluorescence spectrometry (General law) GB/T 25050 nickel-iron ingot or block component analysis of a sample taken GB/T 25051 ferronickel particles component analysis of a sample taken Principle 3 Sample with nitric acid - hydrochloric acid, high silicon sample solubilization plus hydrofluoric acid, perchloric acid decomposition smoke. In acidic solution with masking iron fluoride, Aluminum, titanium, manganese, sodium hexametaphosphate masking. An excess of EDTA, at a pH of 4.6 to PAN as indicator, copper standard titration solution drop After a given excess EDTA, copper consumption according to standard titration solution of the sample is calculated as nickel, copper, cobalt sum of the amounts deducted by the number of Dhamma Schools In addition to the amount of copper, cobalt, nickel sample calculated mass fraction.

4 Reagents and materials

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled water or its equivalent purity water. 4.1 Ammonium fluoride solid. 4.2 hydroxylamine hydrochloride as a solid. Nitric acid 4.3, ρ = 1.42g/mL. Hydrochloric acid 4.4, ρ = 1.19g/mL. 4.5 perchloric acid, ρ = 1.67g/mL. Hydrofluoric acid 4.6, ρ = 1.15g/mL. Aqueous ammonia 4.7, ρ = 0.90g/mL. 4.8 hydrochloric acid, 11. 4.9 acetic acid - sodium acetate buffer solution, pH = 4.6. Weigh 144g of anhydrous sodium acetate, dissolved in 500mL of water, 115mL of ice was added ethyl ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 30072-2025_English be delivered?

Answer: Upon your order, we will start to translate GB/T 30072-2025_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 30072-2025_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 30072-2025_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 30072-2025?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 30072-2025 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.