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GB/T 4325.24-2013 English PDF

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US$139.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 4325.24-2013: Methods for chemical analysis of molybdenum -- Part 24: Determination of tungsten content -- Inductively coupled plasma atomic emission spectrometry
Status: Valid

GB/T 4325.24: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4325.24-2013	139	Add to Cart	3 days	Methods for chemical analysis of molybdenum -- Part 24: Determination of tungsten content -- Inductively coupled plasma atomic emission spectrometry	Valid
GB/T 4325.24-1984	199	Add to Cart	2 days	Methods for chemical analysis of molybdenum--The molybdenum blue photometric method for the determination of phosphorus content	Obsolete

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GB/T 4325.7 GB/T 4325.8 GB/T 4325.6 GB/T 4325.17 GB/T 4325.18 GB/T 4325.16

Basic data

Standard ID: GB/T 4325.24-2013 (GB/T4325.24-2013)
Description (Translated English): Methods for chemical analysis of molybdenum -- Part 24: Determination of tungsten content -- Inductively coupled plasma atomic emission spectrometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H63
Classification of International Standard: 77.120.99
Word Count Estimation: 6,638
Older Standard (superseded by this standard): GB/T 4325.28-1984
Regulation (derived from): National Standards Bulletin 2013 No. 6
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 amount of tungsten molybdenum determination. This section applies to molybdenum powder, molybdenum, molybdenum trioxide, ammonium tungsten content. Measuring range: 0. 0050% to 1. 50 %

GB/T 4325.24-2013: Methods for chemical analysis of molybdenum -- Part 24: Determination of tungsten content -- 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.
Methods for chemical analysis of molybdenum Part 24.. Determination of tungsten content Inductively coupled plasma atomic emission spectrometry. ICS 77.120.99 H63 National Standards of People's Republic of China Replacing GB/T 4325.28-1984 Chemical analysis of molybdenum Part 24. Determination of the amount of tungsten Inductively coupled plasma atomic emission spectrometry Part 24. Determinationoftungstencontent- Issued on. 2013-05-09 2014-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 4325 "chemical analysis of molybdenum" is divided into 26 parts. --- Part 1. Determination of lead content - Graphite furnace atomic absorption spectrometry; --- Part 2. Determination of cadmium content by flame atomic absorption spectrometry; --- Part 3. Determination of bismuth content - atomic fluorescence spectrometry; --- Part 4. Determination of tin content by atomic fluorescence spectrometry; --- Part 5. Determination of antimony content - Atomic Fluorescence Spectrometry; --- Part 6. Determination of arsenic content by atomic fluorescence spectrometry; --- Part 7. Determination of the amount of iron phenanthroline spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 8. Determination of cobalt content of cobalt reagents spectrophotometry and flame atomic absorption spectrometry; --- Part 9. Determination of the amount of nickel dimethylglyoxime spectrophotometric method and the flame atomic absorption spectrometry; --- Part 10. Determination of copper content - Flame atomic absorption spectrometry; --- Part 11. Determination of aluminum content of chromium azure S spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 12. silicon content - Inductively coupled plasma atomic emission spectrometry; --- Part 13. Determination of calcium content by flame atomic absorption spectrometry; --- Part 14. Determination of magnesium content - Flame atomic absorption spectrometry; --- Part 15. Determination of sodium content by flame atomic absorption spectrometry; --- Part 16. Determination of potassium content by flame atomic absorption spectrometry; --- Part 17. Determination of titanium content of two methane antipyrine spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 18. Determination of the amount of vanadium tantalum reagent spectrophotometry and inductively coupled plasma atomic emission spectrometry; --- Part 19. Determination of chromium content of diphenyl carbon acid dihydrazide spectrophotometry; --- Part 20. Determination of manganese content by flame atomic absorption spectrometry; --- Part 21. Determination of the amount of carbon and sulfur content of the high-frequency combustion infrared absorption method; --- Part 22. Determination of phosphorus content - Molybdenum blue spectrophotometric method; --- Part 23. Determination of the oxygen and nitrogen inert gas fusion infrared absorption method - thermal conductivity method; --- Part 24. Determination of tungsten content - Inductively coupled plasma atomic emission spectrometry; --- Part 25. Determination of the amount of hydrogen in the inert gas fusion infrared absorption method/thermal conductivity method; --- Part 26. aluminum, magnesium, calcium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, arsenic, cadmium, tin, antimony, tungsten, lead and bismuth content - Inductively coupled Co-Plasma Mass Spectrometry. This section GB/T 4325 of Part 24. This section Press GB/T 1.1-2009 given rule drafting. This Part replaces GB/T 4325.28-1984 "chemical analysis of molybdenum tetraphenyl arsenic chloride hydrochloride - thiocyanate spectrophotometric determination The amount of tungsten. " This section compared with the GB/T 4325.28-1984, main technical changes are as follows. --- Measurement range has been adjusted; --- The "four benzene arsenic chloride hydrochloride - thiocyanate photometric method" to "inductively coupled plasma atomic emission spectrometry"; --- Supplemental test reporting requirements. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This section is drafted. Beijing Nonferrous Metal Research Institute, Western Metal Materials Co., Ltd. Jinduicheng Molybdenum. The main drafters of this section. Li Jidong, Wang Changhua, ink Shumin, Liu Ying, Panyuan Hai, Hanwei Ru, Li Tuo, Xie Mingming, Li Qiao red. This part of the standard replaces the previous editions are. --- GB/T 4325.28-1984. Chemical analysis of molybdenum Part 24. Determination of the amount of tungsten Inductively coupled plasma atomic emission spectrometry

1 Scope

GB/T 4325 provisions of this part of the determination of the amount of tungsten molybdenum. This section applies to molybdenum powder, molybdenum, molybdenum trioxide, ammonium molybdate in the determination of tungsten content. Measurement range. 0.0050% to 1.50%.

2 Method summary

Sample with nitric acid, hydrofluoric acid and hydrogen peroxide dissolved in Inductively Coupled Plasma Emission Spectrometry Determination of tungsten content.

3 Reagents

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity. 3.1 nitric acid (ρ = 1.42g/mL). 3.2 Hydrofluoric acid (ρ = 1.17g/mL). 3.3 Hydrogen peroxide (ρ = 1.17g/mL). 3.4 molybdate mass fraction ≥99.99%, contained tungsten content < 0.0005%. 3.5 W standard stock solution. Accurately weigh 1.260g tungsten trioxide (mass fraction ≥99.99%), placed in 250mL beaker, add 20mL of sodium hydroxide solution (200g/L) was dissolved and transferred to 1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL Containing 1mg tungsten. 3.6 Tungsten standard solution. Pipette 10.00mL tungsten standard stock solution (3.5), placed in 100mL volumetric flask 6mL nitric acid (3.1), plus 2mL into hydrofluoric acid (3.2) with water to volume, mix, and immediately transferred to dry plastic bottle storage. This solution 1mL containing 100μg tungsten. Argon 3.7, the volume fraction of not less than 99.99%.

4 Instrument

Inductively coupled plasma emission spectrometer, using nitric acid and hydrofluoric acid dissolution samples need to use hydrofluoric acid resistant sample introduction system. In most instruments Under good conditions, with 1.0μg/mL standard solution tungsten continuous measurement 11 times, and the relative standard deviation of light intensity does not exceed 2.5%.

5 Sample

Molybdenum should smash through the 0.75mm standard sieve. Step 6 Analysis 6.1 Sample Table 1. Weigh the sample to the nearest 0.0001g. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 4325.24-2013_English be delivered?

Answer: Upon your order, we will start to translate GB/T 4325.24-2013_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 4325.24-2013_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 4325.24-2013_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 4325.24-2013?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 4325.24-2013 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.