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GB/T 23278.5-2009 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 23278.5-2009: Methods for chemical analysis of sodium stannate -- Part 5: Determination of antimony content -- Malachite green photometric method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23278.5-2009	139	Add to Cart	3 days	Methods for chemical analysis of sodium stannate -- Part 5: Determination of antimony content -- Malachite green photometric method	Valid

Similar standards

GB/T 23940 GB/T 23834.1 GB/T 23769 GB/T 23278.3 GB/T 23278.4 GB/T 23278.2

Basic data

Standard ID: GB/T 23278.5-2009 (GB/T23278.5-2009)
Description (Translated English): Methods for chemical analysis of sodium stannate -- Part 5: Determination of antimony content -- Malachite green photometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G10
Classification of International Standard: 71.040.40
Word Count Estimation: 6,675
Date of Issue: 2009-01-05
Date of Implementation: 2009-11-01
Regulation (derived from): National Standard Approval Announcement 2009 No.2 (Total No.142)
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 method for the determination of tin and antimony sodium content. This section applies to the determination of tin and antimony sodium content. Measurement range of 0. 0002% to 0. 050%.

GB/T 23278.5-2009: Methods for chemical analysis of sodium stannate -- Part 5: Determination of antimony content -- Malachite green photometric 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.
Methods for chemical analysis of sodium stannate Part 5. Determination of antimony content Malachite green photometric method ICS 71.040.40 G10 National Standards of People's Republic of China Methods for chemical analysis of sodium stannate Part 5. Determination of antimony content - Malachite green spectrophotometry Posted 2009-01-05 2009-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 23278 "Methods for chemical analysis of sodium stannate" is divided into eight sections. --- Part 1. Determination of tin content potassium iodate titration; --- Part 2. Determination of iron content - 1,10-phenanthroline spectrophotometry; --- Part 3. Determination of arsenic content of arsenic and antimony molybdenum blue spectrophotometric method; --- Part 4. Determination of lead content - Atomic absorption spectrometry; --- Part 5. Determination of antimony content - Malachite green spectrophotometry; --- Part 6. Determination of the free base neutralization titration method; --- Part 7. alkali insolubles - Gravimetric method; --- Part 8. Determination of nitrate ion selective electrode method. This is Part 5. This part is proposed by the China Nonferrous Metals Industry Association. The non-ferrous metal part by the National Standardization Technical Committee. This section from Yunnan Tin Group Co., Ltd. is responsible for drafting. This section is Liuzhou China Tin Group Co. drafted. This section from Yunnan Tin Group Co., Ltd., Yunnan Honghe SAIEC IQ participate in the drafting. The main drafters of this section. Cream Lin, Luo Peizhen, Yesu Juan, Chen Lin, Jiang Village stretch, Su Yan, Shen Qing, Hu Yu Wei. Methods for chemical analysis of sodium stannate Part 5. Determination of antimony content - Malachite green spectrophotometry

1 Scope

This section GB/T 23278 specifies the method for the determination of tin in sodium antimony content. This section applies to the determination of tin, antimony sodium content was measured in the range of 0.0002% to 0.050%.

2 Method summary

Sample hydrochloric acid dissolved in hydrochloric acid medium, extracted with benzene and antimony anions generated green malachite green complex in a spectrophotometer Measuring the absorbance at 635nm wavelength.

3 Reagents

Unless otherwise indicated, the reagents used in this section refer to water and analytical grade and third grade water. 3.1 over anhydrous sodium sulfate. 3.2 hydrochloride (ρ1.19g/mL). 3.3 benzene. Hydrochloride 3.4 (1 + 4). Hydrochloride 3.5 (1 + 9). Phosphate 3.6 (5 + 1). 3.7 stannous chloride (100g/L). Weigh 10g of stannous chloride (SnCl2 · 2H2O), plus 2mL of hydrochloric acid (3.2), warmed to dissolve, coolish, with Diluted with water to 100mL, add pure tin (99.999%) the number of tablets. 3.8 sodium nitrite solution (140g/L). 3.9 urea solution (400g/L). 3.10 malachite green solution (2g/L). 3.11 Antimony standard stock solution. Weigh 0.1645g antimony potassium tartrate KSbOC4H4O6 · 12H2 () O placed in 250mL beaker, add Into 100mL of hydrochloric acid (3.4), stirring to dissolve, transferred to 1000mL volumetric flask with hydrochloric acid (3.4) Wash the beaker and dilute to volume, mix uniform. This solution 1mL containing 60μg antimony. 3.12 Antimony standard solution. Pipette 25.00mL antimony standard stock solution in 500mL volumetric flask, dilute to the mark with hydrochloric acid (3.4), mixed uniform. This solution 1mL containing 3μg antimony.

4 Sample

The sample should be sealed packaging. Step 5 Analysis 5.1 Sample Table 1. Weigh the sample to the nearest 0.0002g. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 23278.5-2009_English be delivered?

Answer: Upon your order, we will start to translate GB/T 23278.5-2009_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 GB/T 23278.5-2009_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 23278.5-2009_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+ 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.