|
US$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 2261-2009: Determination of water-soluble chloride content in iron ores. Potentiometric titration
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 2261-2009 | English | 209 |
Add to Cart
|
3 days [Need to translate]
|
Determination of water-soluble chloride content in iron ores. Potentiometric titration
| Valid |
SN/T 2261-2009
|
PDF similar to SN/T 2261-2009
Basic data | Standard ID | SN/T 2261-2009 (SN/T2261-2009) | | Description (Translated English) | Determination of water-soluble chloride content in iron ores. Potentiometric titration | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | D31 | | Classification of International Standard | 73.060.10 | | Word Count Estimation | 8,836 | | Date of Issue | 2009-02-20 | | Date of Implementation | 2009-09-01 | | Quoted Standard | GB/T 601; GB/T 10322.1; GB/T 6379.2 | | Regulation (derived from) | National Quality Inspection [2009] No. 67 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the potentiometric titration of iron ore in the water-soluble chlorides. This standard applies to the determination of iron in the water-soluble chlorides, measuring range: 0. 005% ~ 0. 35% (mass fraction). | SN/T 2261-2009: Determination of water-soluble chloride content in iron ores. Potentiometric titration
---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 water-soluble chloride content in iron ores.Potentiometric titration
Exit inspection and quarantine industry standard book People's Republic of China
Determination of iron in the water-soluble chlorides
Potentiometric titration
Posted 2009-02-20
2009-09-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
The Standard Appendix A and Appendix B are informative.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard by the People's Republic of China Guangdong Entry-Exit Inspection and Quarantine, Ningbo, Tianjin Entry-Exit Inspection and Quarantine
Bureau of Liaoning Exit Inspection and Quarantine is responsible for drafting.
The main drafters of this standard. standard speed Peng, Huang Wenxian, Lu Zhenguo, Dicui Ping, Zhong Zhiguang, Zheng Jianguo, Liu Jianbin, Wang Yan, Wang Hong, Hu Xiaojing.
This standard is the first release of the entry-exit inspection and quarantine industry standards.
Determination of iron in the water-soluble chlorides
Potentiometric titration
1 Scope
This standard specifies the method of potentiometric titration in water-soluble iron chlorides.
This standard applies to the determination of iron in water soluble chloride, measurement range. 0.005% to 0.35% (mass fraction).
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. For undated reference documents, the latest versions apply to this standard.
Preparation of GB/T 601 chemical reagent standard titration solution
GB/T 10322.1 iron ore sampling and sample preparation methods
GB/T 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the standard measurement method to repeat
Of the basic methods of reproduction
3 Method summary
Sample was leached with water, dried and filtered. Removing part of the filtrate, under alkaline conditions with hydrogen peroxide to eliminate interference sulfide. Plus nitric acid
Of the solution. In the presence of alcohol, the chloride test solution was measured by potentiometric titration.
4 Reagents
Unless otherwise specified, use only analytical reagent.
4.1 Water
Resistivity greater than 18.2 (MΩ · cm).
4.2 KCl (reference reagent)
105 ℃ drying 2h after desiccator.
4.3 silver nitrate (reference reagent)
105 ℃ drying 2h after desiccator.
4.5 ethanol
4.6 hydrogen peroxide solution (30%)
Measure 100mL nitric acid (4.4), diluted with water to 1L.
Weigh sodium 4g, dissolved in water and transferred to 1000mL volumetric flask and then diluted with water to the mark.
Weigh 0.3728g potassium chloride (4.2), dissolved in water and transferred to 500mL volumetric flask, dilute to the mark, shake.
Weigh 3.39 g of the (accurate to 0.1mg) silver nitrate (4.3), with water to dissolve completely shifted 1000mL volumetric flask, washed with water
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of SN/T 2261-2009_English be delivered?Answer: Upon your order, we will start to translate SN/T 2261-2009_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 2261-2009_English with my colleagues?Answer: Yes. The purchased PDF of SN/T 2261-2009_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+ countriesQuestion 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 [email protected]. 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.
|