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Title: A simple HPLC method for determination of 2-diazonaphthoquinone-5-sulphonic acid phenyl ester used in positive photoresists
Authors: Reddy, Maruthi Janaki Ram
Reddy, V Venkat
Rao, B Ananda
Rao, V Jayathirtha
Keywords: 2-Diazonaphthoquinone-5-sulphonic acid phenyl ester
5-Amino naphthalene-1-sulphonic acid sodium salt
Reverse phase HPLC
HPLC method validation
Issue Date: May-2006
Publisher: CSIR
IPC CodeB01D15/08
Abstract: A simple high performance liquid chromatographic (HPLC) method for the determination of 2-diazonaphthoquinone-5-sulphonic acid phenyl ester (DNQ) is developed. 5-Amino naphthalene-1-sulphonic acid sodium salt is used as internal standard. A Polaris C18-5 silica column (2504.6 mm), 5 particle size, was equilibrated with a mobile phase composed of methanol and water (80:20, v/v). Flow rate was 1.0 mL/min. The elution time for 5-amino naphthalene-1-sulphonic acid sodium salt and DNQ was approximately 2 and 4 min, respectively. Calibration curve of DNQ was linear in the concentration range of 10-50 g/mL. Limit of detection and quantification were measured in the lowest concentrations of the replicates. Recovery is about 96%.
Page(s): 302-304
ISSN: 0975-0991 (Online); 0971-457X (Print)
Source:IJCT Vol.13(3) [May 2006]

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