硫醇中硫含量检测方案(自动电位滴定)

http：//www.kyoto-kem.com Measurement of mercaptan sulfur and hydrogen sulfide 1 PPM can be detected by titrator with lower cost than any other technologies!! Determination of mercaptan sulfur and hydrogen sulfide in fuels and liquidpetroleum gases (LPG) is one of the important applications in the latestpetroleum/gas analysis. According to international standard methods， 1 ppm level as minimumdetection level can be confirmed with titration method. International standards ■ ASTM D3227 Standard Test Method for (Thiol Mercaptan) Sulfur in Gasoline，Kerosine， Aviation Turbine， and Distillate Fuels (Potentiometric Method)UOP 163 Hydrogen Sulfide and Mercaptan Sulfur in Liquid HydrocarbonsIP 272 Determination of mercaptan sulfur and hydrogen sulfide content of liquefiedpetroleum gases (LPG) Features of AT-700 Titrators Preset parameter Less investmentSpecial sealing cell & Special coating silver electrode Easy operation and maintenance Quick measurement The system makes the application successful with KEM special sealing cell and electrodes to avoid oxidization of mercaptan sulfer under atmosphere. Standard items AT-700 automatic potentiometric titrator Special sealing cell Special coating silver electrode Standard substance www.kyoto-kem.com Electronic record of measurement result & methodSoftware for method set-up Method set-up with the software installed PC Transfer of set-up method to memory of a main unit Choice of 1 or 2 built-in burette First end point (EP1) is hydrogen sulfide andsecond (EP2) is mercaptan sulfur. In case of IP272， it is necessary to be followed aprocedure and apparatus described in ASTM D1265. A lead acetate paper is recommended to check ifhydrogen sulfide is present before titration. Preset Parameters Method 11： Sample testing (2 EP points) with 0.01mol/L AgNO3 Method 12： Sample testing (2 EP points) with 0.001mol/L AgNO3 Method 13： Sample testing (1 EP points) with 0.01mol/L AgNO3Method 14： Sample testing (1 EP points) with 0.001mol/L AgNO3Method 15： Blank tirationMethod 16： Coating of silver electrode with AgNO3Method 17： Silver nitrate standardization for 0.01Mol/L AgNO3 Method 18： Silver nitrate standardization for 0.001Mol/L AgNO3Method 19：Verification with standard substance Range ·pH：-20.00~20.00pH ·Temperature：0~100℃ Titration Mode Auto/ Auto Intermit/ Intermit/ Stat Method Number 20 Kinds of Titration Acid-base/ Redox/ Precipitation/ Photometric/Polarization/ Conductivity Display 20 characters 6 lines LCD with backlight Display Content Potential/ Titration amount/ Measurement result/ Parameter Data Memory 50 samples Option Automatic burette/ CHA-700 Environment ·Temperature： 5~35℃ ·Humidity： Below 85%RH KGM KYOTO ELECTRONICS MANUFACTURING CO.，LTD.