I want to build the calibration curve for IC at Shimadzu TOC-L SSM using sodium carbonate (11.3 % of C) as a standard. Can you advise me what amount should I take? Recently I took 20, 40, 60 and 80 mg, but the device did not detect any peak.
Katia Ribeiro
You can use HNaCO3 for calibration for IC (14.28% C) as well. Important to remember that for TC the maximum limit is 30% C and 20% C for IC. In your case 80mg (Na2CO3) is equivalent to 9% C, an even lower value should be more detection. Be careful not to forget to inject into each sample the phosphoric acid (0.5ml). If the problem continues to call a technician, because should probably be Oxygen flow problem.
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Olena Pareniuk
Thak you, Katia! I've started measurements with bicerbonate and hope, it will work! :)
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