GB/T 23274.7-2009 English PDF

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GB/T 23274.7-2009: Methods for chemical analysis of stannic oxide -- Part 7: Determination of soluble matter in hydrochloric acid -- Gravimetric method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23274.7-2009	149	Add to Cart	2 days	Methods for chemical analysis of stannic oxide -- Part 7: Determination of soluble matter in hydrochloric acid -- Gravimetric method	Valid

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Basic data

Standard ID: GB/T 23274.7-2009 (GB/T23274.7-2009)
Description (Translated English): Methods for chemical analysis of stannic oxide -- Part 7: Determination of soluble matter in hydrochloric acid -- Gravimetric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G10
Classification of International Standard: 71.040.40
Word Count Estimation: 5,590
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 determination of tin dioxide hydrochloride soluble matter. This section applies to the determination of tin dioxide hydrochloride soluble matter. Measurement range of 0. 10% to 0. 80 %.

GB/T 23274.7-2009: Methods for chemical analysis of stannic oxide -- Part 7: Determination of soluble matter in hydrochloric acid -- Gravimetric 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 stannic oxide Part 7. Determination of soluable matter in hydrochloric acid Gravimetric method. ICS 71.040.40 G10 National Standards of People's Republic of China Methods for chemical analysis of tin dioxide Determination of hydrochloric acid soluble. Part 7 Gravimetric method 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 23274-2009 "Methods for chemical analysis of tin dioxide" is divided into eight sections. --- Part 1. Determination of the amount of tin oxide 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. lead and copper contents - Flame atomic absorption spectrometry; --- Part 5. Determination of antimony content - Malachite green spectrophotometry; --- Part 6. Determination of sulfate Visible turbidimetric method; --- Part 7. hydrochloric acid soluble Gravimetric method; --- Part 8. Loss on ignition - Gravimetric method. This is Part 7. 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., Ltd., Yunnan Honghe SAIEC IQ participate in the drafting. The main drafters of this section. Hyland, Hanhong Lan, Zhang Hongling, cream Lin Jiang Village stretch, Li-Anne Huang, Hu Yu Wei. Methods for chemical analysis of tin dioxide Determination of hydrochloric acid soluble. Part 7 Gravimetric method

1 Scope

This section GB/T 23274 specifies the method for the determination of tin dioxide hydrochloride soluble matter. This section applies to the determination of tin dioxide hydrochloride solubles were measured in the range of 0.10% to 0.80%.

2 Method summary

Sample in a water bath using hydrochloric acid was added to dissolve the soluble material was filtered, evaporated, after burning, the determination of tin dioxide hydrochloride gravimetric method Solubles.

3 Reagents

Test water for the three distilled water. 3.1 perchloric acid (ρ1.67g/mL). 3.2 HCl (1 + 1).

4 Sample

The sample should be sealed packaging. Step 5 Analysis 5.1 Determination of the number of Independently two determinations, the mean value. 5.2 blank test Along with the test sample blank. 5.3 Determination 5.3.1 Weigh 10.0g sample (m1), accurate to 0.0001g, placed in 300mL beaker, was added 80mL of hydrochloric acid (3.2), with a glass rod Stirring the sample, cover the surface of the pan, over low heat to boiling. Placed in boiling water bath for heating the leaching of 30min. Remove beaker, water was cooled to room temperature. The test solution together with precipitation water moved together 100mL volumetric flask, and dilute to volume, mix, put it aside for a moment. 5.3.2 Quantitative filter paper with a slow double filtration, filtrate was discarded early about 10mL, 50mL pipette filtrate in a beaker, evaporated to approximately 3mL ~ 5mL. Water moved in advance at 800 ℃ constant weight 30mL porcelain crucible (m1) was added 1mL perchloric acid (3.1), evaporate in the low-temperature furnace Perchlorate white smoke to do. 5.3.3 The porcelain crucible was moved into the temperature was raised to 800 ℃ high temperature furnace, burning for 30min, then cooled 1min ~ 2min, desiccator Cooling 30min, weighed (m1 2). Calculation results of the analysis of 6 According to equation (1) Calculation of hydrochloric acid soluble mass fraction, expressed in%. W1 = m1 m1 m1 × 100 2- (1) ......

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