Recovery Test for Sodium Dodecylbenzenesulfonate by TOC-VWS

Introduction

The test method for organic carbon is listed in the General Tests and Assays section of the Japanese Pharmacopeia (JP). For this method, it is specified that the TOC analyzer must be capable of measuring a concentration below 0.05mg/L, and that the instrument be able to achieve a recovery rate of at least 0.450 mg/L carbon in measurement of a sodium dodecylbenzenesulfonate solution (0.806 mg/L). This Application News introduces an example of recovery testing for sodium dodecylbenzenesulfonate solution using the Shimadzu wet chemical oxidation model TOC-V_WS, and an example of analysis of a sample with a TOC concentration below 0.05 mg/L.

December 25, 2007 GMT