Recovery Test for Sodium Dodecylbenzenesulfonate by TOC-LCPH

Introduction

In the test method for total organic carbon as listed in the General Tests, Processes and Apparatus section of the Japanese Pharmacopeia (JP), it is specified that the TOC analyzer must be capable of measurement of sample concentrations below 0.050 mg/L, and that the instrument achieve a recovery rate of at least 0.450 mg/L carbon in measurement of a sodium dodecylbenzenesulfonate solution (0.806 mg/L). Here, we introduce an example of recovery testing with a sodium dodecylbenzenesulfonate solution using the Shimadzu combustion catalytic oxidation model TOC- L_CPH, and an example of analysis of a sample with a TOC concentration below 0.050 mg/L.

February 29, 2012 GMT