1.Test procedures

Weigh 0.05g of the sample, perform the test according to the set testing procedure, and observe the stability of the test results.

2.Combustion conditions

Temperature: 1100℃                 Oxygen: 0.4L/min             

Argon(carrier): 0.2L/min               Argon flow for humidification: 0.1L/min          

Water vapor: 0.1L/min                Absorption solution: pure water

Instrument:SDXNS200H

Combustion process

3.IC conditions

Analytical Column: IonPac AS19 2*250mm   Guard Column: IonPac AG19 2*50mm

Eluent: EGC Ш KOH, 20mM, 0.25mL/min    Column temp.: 30℃

Quantitative loop: 400ul                                Linear range:1-10mg/L

Detector: Dionex-ADRS 600

4.Test results