SN/T 5305-2021 in English

VALID

Determination of fluoride and chloride content in lead concentrates - lon chromatography

Issued on:2021-06-18
Implemented on:2022-01-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $200.00
$194.00

Standard No:	SN/T 5305-2021
Document status:	VALID
Title in English:	Determination of fluoride and chloride content in lead concentrates - lon chromatography
Title in Chinese:	铅精矿中氟和氯含量的测定离子色谱法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2021-06-18
Implemented on:	2022-01-01
Professional Classification:	SN-Import&Export Inspection
Related Keywords:	lead concentrates lon chromatography introduction technical background chloride content fluorine content lead concentrate
Related Topics:	ion chromatography One-stop used ion chromatography Better Used Ion Chromatography ion chromatography Determination method of trace chloride ion Chlorine content Chlorine content determination standard Ion Chromatography of Chloride Ions in Water Trace Chloride Ion Determination Method Basics of Used Ion Chromatography Quality of Used Ion Chromatography Stable Used Ion Chromatography Applicable Used Ion Chromatography ion chromatography Determination of chloride ion by argentometric method Ion Chromatography Chlorine Ion Chromatography Sample Trace Chloride Ion Determination Method Ammonia ion in ion chromatography Two Methods of Secondary Ion Chromatography Chlorine by Ion Chromatography Energy Spectrum of Lead Specific Chloride Ion Content Ion Chromatography Water Content The role of ion chromatography State-of-the-art Used Ion Chromatography Determination of chloride ion content together with Chlorine measurement Lead ion detection Fluoride ion detection method lead concentrate Determination of Chlorine Content Ion Chromatography Standards Ion Chromatography Standards IC flow rate IC flow rate Role in Ion Chromatography How to measure ion chromatography Chlorine content Fluoride ion detection method Chloride ion content in seawater Chloride ion content by potentiometric method Precision ion chromatograph my ion chromatogram Chloride mass Chloride meter Ion Chromatography Chlorine Method for detecting fluoride ion Liquid Chloride Content Chromatographic detection method of chloride ion Chlorine content determination Determination method of lead content in water Determination of Fluorine in Food by Ion Chromatography Lead ion detection Method for Determination of Chloride Ion Content in Water Quality Fluoride ion agent Chloride ion content in three types of water Determination of Chloride Ion in Ore Chlorine content determination Ion Chromatography Content Determination of Chloride Ion by Ion Chromatography Chloride Ion Detection by Ion Chromatography Determination of Chloride and Bromide by Ion Chromatography copper concentrate chloride ion Chloride ion content Chlorine Method for Determination of Chloride Ion Content in Water Quality Fluoride ion in sulfur concentrate Cadmium chloride ion Ion Chromatography+ Chloride content analysis Determination of Fluoride Ion in Water Soluble Chemicals - 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fluoride ion Chloride Chromatographic Content Chloride Titanium ion chromatography in english Fluoride ion content in water Ion Chromatography Determination Method Ammonium Content Ion Chromatography Mass Chromatography of Total Ions Titanium chloride ion Chromatography detection content Lanthanum ion chromatography detection Detection of Chloride Ion in Ion Chromatography Ion Chromatography Fluoride Ion Equipment for Determination of Ion Content Trace chloride ion test in water Determination of Amines by Ion Chromatography Chloride ion, fluoride ion detection Each ion peak in ion chromatogram Determination of Chloride Trace Metal ion content in water ion content Zinc ion content in water Copper Concentrate Chlorine Content Ion Chromatography is unstable Determination of hydrogen ions by ion chromatography Chlorine content copper concentrate Copper Concentrate + Chlorine Content Fluoride ion meter Chlorine in concentrate Ion Chromatography Fluoride Zero Point Ion chromatography EDTA+ content Hydrochloride Ion Chromatography Fluoride Ion Chromatography in Water ion chromatography Coal fluoride ion chromatography Chloride Ion Test Ion Chromatography Method The original ion of ion chromatography Hydrochloride Ion Chromatography Fluoride UV Argentometric chloride ion Chloride ion content detection in water Fluoride UV Chloroprene content When ion chromatography determines ions Chloride ion content in mineral water Methods for Measuring Chloride Ions Solid Chloride Content icp and ion chromatography Lead ion detection Fluoride ions in solids Fluoride ions in the atmosphere What does ion chromatography test Measure the amount of ions in water Chloride ion detection Ion Chromatography d Chloride ion content in water quality Chloride ion content in natural mineral water Fluoride ion content in water Assay Chromatography Chloride ion content in deoxygenated water Ion Chromatography and Ion Pair Chromatography Chloride ionizer Use of Ion Chromatography Chloride ion in solid Method for Determination of Chloride Ion Content Fluoride ion standard determination method potentiometric ion chromatography Chlorine content Ion Chromatography Fluoride Ion Chloride ion content in seawater Chloride ion content in seawater Chloride content and chloride ion content How to measure chloride ion in solid Determination of fluorine content in water by fluoride ion Ion Chromatography Potassium Ion Content Water Content Chromatography Fluorine Mass Spectrometry UV Determination of Lead Ions Detection of fluorine content in water Ion Chromatography Total Chlorine Ion Chromatography Lead Determination of Mineral Water by Ion Chromatography Chloride and Cyanide Atmospheric fluoride ions Chloride ion content in wastewater The method of ion chromatography to measure ions Determination of lead concentrate by volumetric method Chromium ion content in water Ion Chlorine Chlorine Content Ion Chromatography Liquid Chromatography Peak Chloride Ion Quantitative transition q1 Bismuth ion Lead ion Fluorine content in water Fluorine in copper concentrate Chlorofluoride Ion Chromatography Ion Chromatography Photometry lead concentrate volumetric method Chlorine content Chloride Chromatography Fluorine and Chlorine Ion content in mass spectrometry Chloride and Bromide in Ion Chromatography ion chromatography and icp method Determination of trace chloride ions in water Measuring Fluoride in Water Chlorine measurement Determination of fluorine content in water Fluoride vs. Chloride ion Fluoride ion content When measuring fluoride ion in water ion chromatography' Determination of Chloride Ions in Water by Ion Chromatography Chloride ion content in flue gas Determination of anion fluorine and chlorine Free Chlorine and Chloride Ions Cadmium ion content Ion Chromatography Fluorine Ion Chromatography Free Chlorine Organic Ion Chromatography Free Chlorine Fluoride ion detection method in waste hydrofluoric acid Fluoride ion content detection in wastewater Ion chromatography generator How to store ion chromatography columns Does rainwater contain chloride ions? Ion pair chromatography measurement MS Determination of fluoride ion by titration method Residual chlorine content and chloride ion content in tap water Does residual chlorine contain chloride ions? Application range of ion chromatography Determination of fluorine in copper concentrate Detection of chloride ion content in polymers Fluoride ion chromatography standard curve Chloride ion content in boiler flue gas Lead ion national standard detection method Methods for measuring fluoride ions Chloride ion content in corporate water Ion chromatography standard solution Method for determination of chloride ion content in water Ion chromatograph mineralization industry Testing of chlorine content in electronic packages Fluoride ion detection in waste acid Mineral nutrition soil chloride ion content Chloride ion content in cutting fluid Determination of chloride ion content in liquid alkali How to measure fluoride ions Method for determination of lead content in national standards Thunder magnetic ion measurement method for lead ions National standard for determination of fluorine content in solids Fluoride ion content detection About ion chromatography detection Determination method of chloride ion content in sulfuric acid Silver ion content in water Fluoride ion determination in wastewater National standard regulations on lead content in electronic products Methods to improve precision in determination of ion chromatography Determination method of silver ion content by ion chromatography Fluoride ion content in refined oil Fluoride ion titration method detection Method for measuring iodide ion content by ion chromatography Chloride ion content international Test method for chloride ions in refined brine samples of chlor-alkali industry Chloride ion content in industrial water Extraction method of lead ions from wheat Method for detecting chloride ion content in collagen Standard curve for fluoride ion in ion chromatography Fluorine spectrum Chlorine content test in polymers Standard ion chromatography for detection of metal ions Fluoride ion determination standard curve Fluoride ion content in tap water Stainless steel chloride ion content National identification of ion chromatography Chloride ion content in cement Testing method for chloride ion content of admixtures Method for determination of sodium ions by ion chromatography Determination of fluoride ions in water samples Lead concentrate contains zinc Lead in iron ore Ion chromatography fluoride pretreatment method Fluoride ion industry The most common detection method of ion chromatography Fluoride ion standard curve content concentration How about the chloride ion standard curve of ion chromatography? The methods for determining sodium ions in secondary iron concentrate are: Determination of fluorine and chlorine by ion chromatography Standard curve determined by plasma chromatography

Introduction

Technical background and evolution of standards

With the increasing requirements for mineral impurity control in international trade, the General Administration of Customs issued the SN/T 5305-2021 standard in 2021, which applied ion chromatography to the detection of fluorine and chlorine in lead concentrate for the first time. Compared with traditional chemical analysis, this method has technical advantages such as low detection limit (0.001%) and strong anti-interference.

Core method principle

Steps	Key technologies	Parameter requirements
Sample pretreatment	Sodium carbonate fusion method	650℃±25℃ for 40min
Separation process	Steam distillation	160-180℃ controlled distillation
Detection system	Metrosep A Supp 5 chromatographic column	3.2mmol/L Na2CO3 eluent

Analysis of key operation points

Case 1: During the inspection of a batch of imported lead concentrate, it was found that the fluorine content was abnormal (0.038%). After review, it was found that the distillation temperature did not reach 160℃, resulting in a low recovery rate. After strictly controlling the distillation temperature according to clause 8.4.2 of the standard, the measured value was 0.042%.

Typical problems: Incomplete cleaning of nickel crucibles will lead to an increase in the chlorine background value. Clause 6.3 of the standard specifically emphasizes the need to use sodium hydroxide for cleaning.

Method validation data

Validation by 10 laboratories showed that:
When the fluorine content was 0.038%:
Repeatability limit (r) = 0.0017%
Reproducibility limit (R) = 0.0058%

Implementation suggestions

Protective glasses should be worn during melting operation (standard warning clause)
It is recommended to measure the standard substance GBW07165 simultaneously with each batch of samples
The working curve needs to be re-established after the chromatographic column is replaced

More samples: NB/T 47013.2-2015 QC/T 942-2021 GB 18306-2015

Sample only — not a preview of SN/T 5305-2021

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