GB/T 23273.6-2009 English PDF

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GB/T 23273.6-2009: Methods for chemical analysis of cobalt oxalate -- Part 6: Determination of chlorine ion content -- Ion selective electrode method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23273.6-2009	139	Add to Cart	3 days	Methods for chemical analysis of cobalt oxalate -- Part 6: Determination of chlorine ion content -- Ion selective electrode method	Valid

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Basic data

Standard ID: GB/T 23273.6-2009 (GB/T23273.6-2009)
Description (Translated English): Methods for chemical analysis of cobalt oxalate -- Part 6: Determination of chlorine ion content -- Ion selective electrode method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.120.70
Word Count Estimation: 6,698
Date of Issue: 2009-01-15
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 water soluble chloride ion cobalt oxalate content. This section applies to the determination of the amount of water-soluble chloride ion cobalt oxalate. Measuring range: 0. 015% to 0. 5 %.

GB/T 23273.6-2009: Methods for chemical analysis of cobalt oxalate -- Part 6: Determination of chlorine ion content -- Ion selective electrode method

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Methods for chemical analysis of cobalt oxalate Part 6. Determination of chlorine ion content Ion selective electrode method ICS 77.120.70 H13 National Standards of People's Republic of China Methods for chemical analysis of cobalt oxalate Part 6. Determination of the amount of chlorine ions Ion Selective Electrode Posted 2009-01-15 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 23273 "Methods for chemical analysis of cobalt oxalate" a total of eight sections. --- Part 1. Determination of cobalt content by potentiometric titration --- Part 2. Determination of lead content of electrothermal atomic absorption spectrometry --- Part 3. Determination of arsenic content by hydride generation - atomic fluorescence spectrometry --- Part 4. Determination of silicon content - Molybdenum blue spectrophotometric method --- Part 5. calcium, magnesium, sodium content - Flame Atomic Absorption Spectrometry --- Part 6. Determination of the amount of chloride ion selective electrode method --- Part 7. Determination of sulfate ion content of combustion - iodometric method --- Part 8. nickel, copper, iron, zinc, aluminum, manganese, lead, arsenic, calcium, magnesium, sodium content - Inductively coupled plasma atomic emission spectrometry Part is divided into 6 sections. This part is proposed by the China Nonferrous Metals Industry Association. The non-ferrous metal part by the National Standardization Technical Committee. This section is responsible for drafting Jinchuan Group Limited. This in part by the Beijing General Research Institute of Mining and Metallurgy, Zhuzhou Smelter Group Co., Ltd. participated in the drafting. The main drafters of this section. hair Zhang Zhi, Yu Shengjie, Yangxiu Ping, Ma Yuping, Lvqing Cheng, Lin Hsiu-ying, in force, Tangshu Fang, Qiu Ping, Zhu Guozhong. Methods for chemical analysis of cobalt oxalate Part 6. Determination of the amount of chlorine ions Ion Selective Electrode

1 Scope

GB/T 23273 provisions of this part of the determination of cobalt oxalate in a water-soluble chloride ion content. This section applies to the determination of water-soluble chloride ions in an amount of cobalt oxalate. Measurement range. 0.015% to 0.5%.

2 Method summary

Water is heated in a sample leaching of chloride ions in the ionic strength modifiers presence of sodium, chlorine ion selective electrode as indicator electrode And corresponding reference electrode as a reference, potentiometric measuring electrode measured by its potential value. Within the measurement range, the electrode potential and the chlorine ion concentration Negative logarithm linear relationship according to the standard curve method to calculate the amount of chlorine ions.

3 Reagents

Analysis of water are freshly prepared twice-distilled water. 3.1 sodium nitrite solution (5mol/L). 3.2 Chloride standard stock solution. Weigh 0.1649g sodium chloride (reference reagent, pre-burning after 550 ℃ to constant weight in a desiccator and cooled to room temperature) is placed 150mL beaker, dissolved in water and transferred to 100mL volumetric flask, constant volume of water. 1mL 1mg solution containing chloride ions. Chloride Standard Solution 3.3. Chloride standard solution. Pipette 20.00mL chloride stock solution (3.2) in 200mL flask, constant volume of water. This solution 1mL containing 0.1mg chloride ions.

4 Instrument

Potential of 4.1 meter, with a stirring device. 4.2 Chloride Ion Selective Electrode require chloride ion concentration in the solution is at least 10-1mol/L ~ 10-4mol/L range, the electrode potential and chlorine Negative logarithm of the ion concentration was linear. 4.3 reference electrode. Electrode selection in accordance with manufacturer's instructions manual. 4.4 heatable magnetic stirrer. Step 5 Analysis 5.1 Sample Weigh 2.000g sample (m1 0), accurate to 0.0001g. 5.2 Determination 5.2.1 The sample (5.1) into 250mL beaker, add about 35mL of water, stir bar, the beaker was placed in a heatable magnetic stir After the stirrer (4.4), the mixture was stirred and heated to boiling continued 5min, removed, cooled to room temperature, the solution was as shown in Table 1 together with the insoluble matter was transferred to the corresponding flask In Table 1 was added sodium nitrite solution (3.1) with water to volume, measured. ......

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