GB/T 1819.15-2017 in English

VALID

Methods for chemical analysis of tin concentrates - Part 15: Determination of fluorine content - The ion-selective electrode method

Issued on:2017-09-29
Implemented on:2018-04-01
File Format:PDF
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Standard No:	GB/T 1819.15-2017
Document status:	VALID
Title in English:	Methods for chemical analysis of tin concentrates - Part 15: Determination of fluorine content - The ion-selective electrode method
Title in Chinese:	锡精矿化学分析方法第15部分：氟量的测定离子选择电极法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2017-09-29
Implemented on:	2018-04-01
Superseding:	GB/T 1819.15-2006 Methods for chemical analysis of tin concentrates―Determination of fluorine content―The ion-selective electrode method
ICS Classification:	73.060-Metalliferous minerals
Chinese Classification:	D41-Light metal ore
Professional Classification:	GB-National Standard
Related Keywords:	chemical analysis methods fluorine content selective electrode method ion-selective electrode method introduction national standard fluorine content range
Related Topics:	ion selective electrode Analytical electrodes Fluoride ion detection method Fluoride ion detection method Method for detecting fluoride ion Fluoride ion analysis Chemical analysis method of tin and tin concentrate Chemical Analysis of Tin Concentrate Selected Ion Analysis Ion Quantitative Analysis electrochemical polarization method electrochemical polarization method Tin bromide separates cesium Quantitative ion Fluorine electrode Analytical sorted maldi ionization method Quantitative analysis of ions Analysis of Fluorine in Electronic Glass by Ion Selective Electrode Determination Fluoride ion electrode method 10 times 56 ionization analysis Fluoride Determination Method Ion Selective Electrode Method Ion trap quantitative analysis Determination method of fluoride by ion selective electrode method Fluoride ion analysis method Fluoride ion analysis method Chemical Analysis of Fluoride Ions in Water Analysis of Fluorine Determination by Fluoride Ion Selective Electrode Sodium Determination Ion Selective Electrode Method Three-electrode electrochemical measurements In the determination of fluoride by the fluoride ion selective electrode method Analysis method of octafluoronaphthalene Part 2 Determination of Cyanide Content by Ion Selective Electrode Method Ion Quantitative Analysis Fluoride ion analysis method Ion selective electrode organic fluoride Ion Selective Electrode Method for Sodium Content Fluoride Ion Selective Electrode Method Chemical analysis method of tin concentrate Electronic analysis measurement Electrode Ion Analysis polar ion analysis range analysis Fluoride Ion Selective Electrode Analysis in Water Choice of measurement method Fluoride ion in Three-electrode electrochemical measurements How to use fluorine electrode Fluoride Ion Selective Electrode Detection Determination of Trace Fluoride Ions in Water by Ion Selective Electrode GBT1819.15 GB/T 1819.15-2006 GBT1819.15-2017 Analysis of Fluorine by Electrode Method Electrochemical three-electrode measurement Determination of Trace Fluorine in Natural Water by Ion Selective Electrode Method Determination of fluoride ion by titration method method of ionizing molecules Briefly describe the basic principles of ion selective electrode determination of fluoride ion content Response mechanism of fluoride ion selective electrode Fluoride ion electrode activation method Fluoride ion selective electrode determination of fluorine standard curve Calculation method for detection limit of fluoride ion determination method Fluoride ion selective electrode method method validation Fluoride ion selective electrode method standard curve chart Ion selective electrode determination of fluoride standard curve Standard curve for fluoride measurement by fluoride ion selective electrode method Standard curve method for determination of fluoride ions in water using ion selective electrode method Explain the development of electrochemical methods in separation Fluoride ion electrode titration method Fluoride ion selective electrode method standard curve Advantages, Disadvantages and Applicability of Electrode Selection Method Methods for measuring fluoride ions Method for measuring the actual slope of fluoride ion electrode Method for measuring chloride ions using ion-selective electrodes Electronic nose analysis method Determination of hydrogen fluoride ion selective electrode method standard curve Choice of chemical drying methods How to measure fluoride ions Determination of Fluoride Ion Selective Electrode Method Standard Curve How to prepare the standard curve of fluoride ion selective electrode method Ultra-short chain perfluorinated analysis method Analytical method optimization gradient selection Selection of mobile phases for analytical method development How to use and maintain fluoride ion electrodes Chemical identification method of cadmium ions Basis for selection of chromatographic separation methods Determination of sodium ions by electrochemical method Fluoride ion selective electrode method standard curve Analytical methods for perfluorinated Ion selective electrode built-in standard measurement method Ion detection electrochemical method Determination method of national standard fluoride ion electrode Fluoride ion selective electrode method standard curve The main basis for selecting chromatographic separation methods Fluoride ion detection method ion selective electrode Selection of analytical methods for therapeutic drug monitoring How to choose electrode for titration method Electronic nose analysis method? Qualitative analysis method of electronic tongue Electrode activation method Fluoride ion selective electrode standard addition method Mass spectrometry optimization method for selecting precursor ions Aluminum ion constant analysis method Commonly used separation methods in analytical chemistry Electrochemical polarization reduction method Fluoride electrode immersion method

《GB/T 1819.15-2017锡精矿化学分析方法第15部分：氟量的测定离子选择电极法》由TC243（全国有色金属标准化技术委员会）归口，TC243SC2（全国有色金属标准化技术委员会重金属分会）执行，主管部门为中国有色金属工业协会。

Introduction

National Standard of the People's Republic of China GB/T 1819.15—2017

Chemical analysis methods for tin concentrates Part 15: Determination of fluorine content - ion selective electrode method

Background of standard formulation and technological evolution

This standard is a revision of GB/T 1819.15—2006. The main revisions include: the symmetric sample weight has been adjusted, the melting sample method has been changed from sodium peroxide to sodium hydroxide-sodium peroxide, the lower limit of fluorine content has been changed from 0.020% to 0.010%, and the precision part and the newly added test report clauses have been optimized.

The ion selective electrode method is an analytical technique based on the principle of electrochemistry, which has the characteristics of high sensitivity, simple operation and strong applicability. With the advancement of science and technology, this method is increasingly used in the determination of fluorine content.

Item	Original Standard GB/T1819.15—2006	New Standard GB/T1819.15—2017
Measurement Range	0.020% ~ 3.00%	0.010% ~ 3.00%
Sample Melting Method	Sodium Peroxide	Sodium Hydroxide-Sodium Peroxide
Precision Requirements	Not Clear	Add Repeatability and Reproducibility Data Table

Analysis steps and key points

Sample preparation:The sample particle size should not be greater than 0.074mm. It needs to be dried in an oven at 105°C ±5°C for 1 hour and cooled to room temperature.

Determination steps:

Mix the sample with sodium hydroxide and heat to melt, then add sodium peroxide for secondary melting.
Immerse the melt with water and filter, and adjust the pH value of the solution to 6.5 ~ 7.0.
Prepare standard curve: Select the appropriate working curve (I or II) according to the fluorine content range for plotting.
Use a fluoride ion selective electrode and a saturated calomel electrode to measure the equilibrium potential value of the solution through a potentiometer.

Instrument and reagent requirements

Instruments and equipment:

Fluoride ion selective electrode
Saturated calomel electrode
Potentiometer (accuracy 0.1mV)
Electromagnetic stirrer

Reagent preparation:

Including sodium hydroxide, sodium peroxide, sodium citrate-potassium nitrate solution, etc., which must be prepared strictly according to the standards and properly stored.

Precision requirements

Fluorine content range (%)	Repeatability limit (r)	Reproducibility limit (R)
0.010 ~ 0.20	0.002 ~ 0.007	0.004 ~ 0.010
0.20 ~3.00	0.05 ~0.10	0.07 ~0.12

Implementation Suggestions

Operators must undergo professional training and be familiar with the working principle and equipment use of the ion selective electrode method.
Prepare reagents strictly in accordance with standard requirements and calibrate instruments and equipment regularly.
During the measurement process, pay attention to the pH control of the solution and the accuracy of the blank test.
Select an appropriate working curve according to the fluorine content of the sample to improve the measurement accuracy.

More samples: DL/T 5154-2012 QC/T 942-2021 DL/T 368-2010

Sample only — not a preview of GB/T 1819.15-2017

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