Total Organic Carbon Analyser, TOC-L CPH
Performance indicators: high performance oxide catalyst, such as platinum, combustion tube; non dispersive infrared (NDIR) gas detector.
Principle: water soluble organic carbon (WSOC) working principle: using UV / persulfate oxidation method, with eight way valve injector intake of quantitative water soluble samples by high purity gas (N2/O2) will be equipped with a high performance solution into the platinum oxidation catalyst in the combustion tube, at 680 degrees Celsius the high temperature solution TC group was divided into CO2, with the speed of 150 mL/min into the combustion of the carrier gas combustion products to carry electronic dehumidifier, then cooling and dehydration, and then by halogen remover dehalogenate, carrier gas sample combustion products to non dispersive infrared (NDIR) detection of CO2 gas detector WSIC; carrier gas, jet reactor (WSIC reaction liquid liquid reaction after acidification), the sample is first injected into the WSIC reactor; then the sample in the reactor in IC is converted to CO2, and then after ventilation treatment, these CO2 The sample will be emitted and detected by the NDIR detector. The standard curve was obtained by using the standard solution, and the concentration of WSIC and WSTC in the sample solution was given. The concentration of soluble organic carbon (WSOC) was obtained by WSOC=WSTC-WSIC.
Water soluble total carbon (WSTC) and water-soluble inorganic carbon (WSIC) were tested.
Test method and sample requirements: take a certain amount of membrane, adding dissolved in about 18 ml deionized water (r > 18.2 m omega), ultrasonic extraction for 4 times, each 15 min, then the decolorization shaking after 1 h standing. After the extraction of water solution with 0.45 m of water system filter about 16 ml solution.
The numerical accuracy of detection limit: measurement error is less than 5%, the detection limit is 4 g L-1
Total organic carbon analyzer