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GB/T 6730.37-2017 English PDF

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Q: Should I purchase the latest version GB/T 6730.37-2017?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 6730.37-2017 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$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 6730.37-2017: Iron ores -- Determination of cobalt content--4-[(5-chloro-2-pyridyl) azo]-1, 3-diamino-benzene spectrophotometric method
Status: Valid

GB/T 6730.37: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 6730.37-2017	199	Add to Cart	3 days	Iron ores -- Determination of cobalt content--4-[(5-chloro-2-pyridyl) azo]-1, 3-diamino-benzene spectrophotometric method	Valid
GB/T 6730.37-1986	199	Add to Cart	2 days	Methods for chemical analysis of iron ores. The 4-[(5-chloro-2-pyridyl)azo]-1, 3-diaminobenzene photometric method for the determination of cobalt content	Obsolete

Similar standards

GB/T 6730.5 GB/T 6730.28 GB/T 6730.55 GB/T 6730.45 GB/T 6730.31 GB/T 6730.34

Basic data

Standard ID: GB/T 6730.37-2017 (GB/T6730.37-2017)
Description (Translated English): Iron ores -- Determination of cobalt content--4-[(5-chloro-2-pyridyl) azo]-1, 3-diamino-benzene spectrophotometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D31
Classification of International Standard: 73.060.10
Word Count Estimation: 10,161
Date of Issue: 2017-09-07
Date of Implementation: 2018-06-01
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

GB/T 6730.37-2017: Iron ores -- Determination of cobalt content--4-[(5-chloro-2-pyridyl) azo]-1, 3-diamino-benzene spectrophotometric 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.
Iron ores - Determination of cobalt content - 4 - [(5-chloro-2-pyridyl) azo] -1,3-diamino-benzene spectrophotometric method ICS 73.060.10 D31 National Standards of People's Republic of China Replacing GB/T 6730.37-1986 Determination of cobalt content in iron ore 4 - [(5-chloro-2-pyridine) Azo] -1,3-diaminobenzene spectrophotometry Ironores-Determinationofcobaltcontent-4 - [(5-chloro-2- pyridyl) azo] -1,3-diamino-benzenespectrophotometricmethod 2017-09-07 Posted 2018-06-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

GB/T 6730 "iron ore" is divided into dozens of sections. This section GB/T 6730 Part 37. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 6730.37-1986 "Iron Ore Chemical Analysis Method 4 - [(5-chloro-2-pyridine) azo] -1,3-diaminobenzene light Degree of determination of cobalt content, "This section compared with GB/T 6730.37-1986, in addition to editorial changes, the main technical changes are as follows. --- Standard name was changed to "Determination of cobalt content of iron ore 4 - [(5-chloro-2-pyridyl) azo] -1,3-diaminobenzene spectrophotometry law"; --- Added "warning" "normative references" "instrument" and "test report" chapter; --- Clear and standardized sample and sample preparation of the specific requirements; --- Standard "sample size" to "sample volume", and clear the weighing accuracy; --- Deleted the coefficient (1) in the coefficient "K" and "K" statement. This part is proposed by China Iron and Steel Association. This part of the National Iron Ore and Direct Reduced Iron Standardization Technical Committee (SAC/TC317) centralized. This section is drafted by Ningbo Inspection and Quarantine Science and Technology Research Institute, Erenhot Inspection and Quarantine Bureau, Metallurgical Industry Information Standards Institute. The main drafters of this section. Ren Chunsheng, Chen Hehai, Ningguo East, Huang Shijie, Liao Haiping, Yu Qing, Wang Yan, Fu Ran Ran, Chen Zhibin. This part of the standard replaces the previous version of the release. --- GB/T 6730.37-1986. Determination of cobalt content in iron ore 4 - [(5-chloro-2-pyridine) Azo] -1,3-diaminobenzene spectrophotometry Warning --- personnel using this section should have formal laboratory work experience. This section does not indicate all possible safety issues question. It is the user's responsibility to take appropriate safety and health measures and to ensure compliance with the requirements of the relevant state laws and regulations.

1 Scope

GB/T 6730 provisions of this section 4 - [(5-chloro-2-pyridyl) azo] -1,3-diaminobenzene spectrophotometric determination of cobalt content. This section applies to the determination of cobalt content in iron ore, iron ore concentrate, sinter and pellet. Measurement range (mass fraction). 0.0050% ~ 0.10%.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 6682 analytical laboratory water specifications and test methods Preparation of pre-dried samples for analysis of iron ores GB/T 6730.1 GB/T 8170 rounded repair rules and limit values of the representation and judgment GB/T 10322.1 Iron ore sampling and sample preparation methods GB/T 12806 laboratory glassware single standard line capacity bottle GB/T 12807 Laboratory glassware graduated pipette GB/T 12808 laboratory glassware single standard pipette

3 principle

In pH 5 acetate media, cobalt and 5-Cl-PADAB form a red complex with a composition of 1. 2, which is converted to Stable wine red complex. The absorbance is measured at a wavelength of 570 nm, whereby cobalt is measured. Copper, nickel and iron also form colored complexes with 5-Cl-PADAB, the colored complex of copper and nickel is destroyed when heated in a boiling water bath, The cobalt complex is not destroyed. A large number of iron interference, plus the solution before the developer, adding phosphoric acid and heated in a boiling water bath, Can eliminate its influence.

4 Reagents and materials

Unless otherwise indicated in the analysis, the use of only approved analytical reagent and in line with GB/T 6682 more than two distilled water or purity Quite water. 4.1 Sodium peroxide. 4.2 Hydrochloric acid, p approximately 1.19 g/mL. Hydrochloric acid, 1 1. Hydrochloric acid, 1 9. 4.5 Phosphoric acid, 15 85. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 6730.37-2017_English be delivered?

Answer: Upon your order, we will start to translate GB/T 6730.37-2017_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 6730.37-2017_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 6730.37-2017_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 6730.37-2017?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 6730.37-2017 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.