Lachat Method: Chloride 10-117-07-1-B

Document ID

Document ID ME181

Published Date

Published Date 01/18/2022
Method Number
Lachat Method: Chloride 10-117-07-1-B
Method # Range MDL Units Matrix Rev. Date
10-117-07-1-B 2.5-100 0.5 mg/L Cl- Waters 29-Nov-07
Thiocyanate ion is liberated from mercuric thiocyanate by the formation of soluble mercuric chloride. In the presence of ferric ion, free thiocyanate ion forms the highly colored ferric thiocyanate, of which the absorbance is proportional to the chloride concentration. Ferric thiocyanate [Fe(SCN)] +2 , absorbs strongly at 480 nm. The calibration curve is non-linear.

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