GB/T 1819.9-2017 in English

VALID

Methods for chemical analysis of tin concentrates - Part 9: Determination of tungsten trioxide content - The thiocyanate spectrophotometric method

Issued on:2017-09-29
Implemented on:2018-04-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $100.00
$97.00

Standard No:	GB/T 1819.9-2017
Document status:	VALID
Title in English:	Methods for chemical analysis of tin concentrates - Part 9: Determination of tungsten trioxide content - The thiocyanate spectrophotometric method
Title in Chinese:	锡精矿化学分析方法第9部分：三氧化钨量的测定硫氰酸盐分光光度法
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 1819.9-2004 Methods for chemical analysis of tin concentrates - Determination of tungsten trioxide content - The thiocyanate spectrophotometric meethod
ICS Classification:	73.060-Metalliferous minerals
Chinese Classification:	D41-Light metal ore
Professional Classification:	GB-National Standard
Related Keywords:	narrow determination range determination range spectrophotometric method introduction gb/t method background tungsten trioxide content
Related Topics:	Rhenium Thiocyanate Spectrophotometry Thiocyanate Tin dioxide hydrochloric acid Chlorothiocyanate spectrophotometry Analysis method of industrial thiocyanate Sulfur Trioxide Test Method Thiocyanate Spectrophotometry Indium Content Potassium Tungsten Thiocyanate Spectrophotometry Sulfate chemical analysis method Chemical analysis method of tin and tin concentrate Chemical Analysis of Tin Concentrate Determination method of total tin in water spectrophotometric method tin dioxide spectrophotometry tin dioxide spectrometry Determination of Tungsten Trioxide Content in Tungsten Concentrates by X-ray Fluorescence Spectrometry Cerium Sulfate Spectrophotometry Spectrophotometric Sulfur Dioxide Three Methods of Quantitative Analysis Spectrophotometric Determination of Trace Tin Spectrophotometric Sulfur Dioxide Spectrophotometer Determination of Cyanogen Spectrophotometric Determination of Sulfur Dioxide Standard measurement method of sulfur trioxide Three Methods of Quantitative Analysis Determination of tungsten trioxide content in tungsten concentrates. X-ray fluorescence spectrometry Chemical analysis method of tin concentrate Methods for chemical analysis of bismuth concentrates - Determination of molybdenum content - Thiocyanate spectrophotometric method Methods for chemical analysis of bismuth concentrates - Determination of molybdenum content - Thiocyanate spectrophotometric method Tungsten tin trioxide Three Light Analysis Methods GBT1819.9 GB/T 1819.9-2004 GBT1819.9-2017 Chemical oxygen demand rapid digestion spectrophotometry standard curve Spectrophotometric Trinitrogen Test Method Sulfuric acid concentration assay analysis method What are the methods for measuring sulfur dioxide using spectrophotometry? Spectrophotometric Sulfide Standard Curve Mercury Thiocyanate Hydrochloride Spectrophotometry Standard Curve Determination of sulfate by spectrophotometry Validation of method for measuring tin by spectrophotometry Sulfur dioxide spectrophotometric calculation method Method for analysis of methoxy hydrochloride Three commonly used quantitative analysis methods Qualitative analysis method for cyanide Instrumental analysis method for determining cyanide concentration

《GB/T 1819.9-2017锡精矿化学分析方法第9部分：三氧化钨量的测定硫氰酸盐分光光度法》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

GB/T 1819.9—2017 Standard Interpretation

Standard Version	Scope of Application	Main Changes
GB/T 1819.9—2017	Measurement Range: $0.050\% \sim 35.00\%$	- Expanded the measurement range- Modified the preparation method of standard solution- Added measures for dealing with interfering elements
GB/T 1819.9—2004	Measurement Range: $0.020\% \sim 25.00\%$	- Narrow determination range - Insufficient description of the method

Background of standard formulation and analysis of technological evolution

The background of GB/T 1819.9—2017 is mainly due to the following points:

The determination range of the original standard GB/T 1819.9—2004 is narrow and cannot meet the needs of industrial development.
With the change of tungsten trioxide content in tin concentrate, the accuracy of the existing method in high and low concentration ranges is insufficient.
The new standard introduces more advanced chemical analysis technology and optimizes the experimental steps.

Implementation recommendations

In order to ensure the effective implementation of GB/T 1819.9—2017, the following recommendations are made:

Equipment calibration: Use standard solutions to regularly calibrate the spectrophotometer to ensure wavelength accuracy.
Reagent quality: Ensure that all reagents used are analytically pure and pay attention to the preparation method of critical reagents.
Operation training: Provide regular training for experimental personnel, especially for high-temperature melting and spectrophotometer operation.

More samples: GB 50021-2001(2009) JJG 21-2008 YD/T 3934-2021

Sample only — not a preview of GB/T 1819.9-2017

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