KWKL-200Micro Coulomb Sulfur-Chlorine Analyzer

Produced by Nanjing Keyuan Analytical Instruments Co., Ltd.,Instrument featuresPrinciple of Dynamic MicrocoulometryEngineered for design, the sample is introduced into the cracking tube reactor via oxidation, converted into titratable ions, then carried into the titration cell by the carrier gas for titration. The electric charge consumed during the electrolytic titration process is measured, and based on Faraday's law, the sample'sTotal Sulfur, Total ChlorineContent

Faraday's Law principle: For every electrolytic cell, for every electric current passing through96500Coulombs of electricity will precipitate or dissolve into the electrodes.1Mole substance.

Instrument Principle: The sample is carried into the pyrolysis tube by the carrier gas and burned with oxygen to a great extent, with the sulfur being quantitatively converted intoSO₂。SO₂Absorbed by the electrolyte and undergoes the following reaction:

SO₂+H₂O +I₂ =SO₃ +2H⁺+2I^-   

Reagent consumption in the electrolyte solutionI₂OrAg⁺,Causing electricityThe measuring electrode potential changes in the reservoir are detected by the instrument, which identifies this change and providesElectricityDissolve a corresponding electrolytic voltage in the electrolytic electrode. Electrolyze on the electrode.I₂OrAg⁺UntilElectricityNo Chinese content provided.I₂Or Ag⁺Restore to original concentration. The instrument detects the electricity consumed during this electrolysis process and calculates...ReactiveConsumptionTheI₂OrAg⁺Quantity, thereby obtaining samples ofS.CLConcentration.

Calibrate the instrument using a standard sample or control sample of known concentration, adjusting the instrument's operating state until the recovery rate of the standard sample or control sample is80%---120%At this point, the instrument is considered to have reached normal operating status. By injecting a sample of unknown concentration into the pyrolyzer and comparing the conversion rate with a standard or reference sample, the concentration of the sample can be calculated.

Technical Specifications

1. Measurement Range:

                S： 0.05-----10000mg/L-----Percentage Content

      Cl： 0.2-----10000mg/L-----Percentage Content

II. Instrument Accuracy:

A：Concentration0.05-1.0 ng/ulSample Error:≤±0.1

                        B：Concentration1.0-10 ng/ulRelative Sample Error:≤10%

C：Concentration10 ng/ulThe relative error of the above samples:≤5%

Section 3: Instrumental Repetition Error:

A：Concentration0.05-1.0 ng/ulSample tolerance:≤50%

                       B：Concentration1.0-10 ng/ulThe sample relative error:≤10%

C：Concentration10 ng/ulThe relative error of the above samples:≤5%