Liquid chromatographic separation and determination of aromatic sulfonates in an aquatic environment using a
R Nageswara Rao1, N Venkateswarlu, Sara Khalid
1HPLC Group, Division of Analytical Chemistry, Discovery Laboratory, Indian Institute of Chemical Technology, Tarnaka, Hyderabad-500 007, India.
Abstract:
A simple and rapid method involving high-performance liquid chromatographic separation, followed by photodiode array (PDA) and electrospray ionization-mass spectrometric (ESI-MS) detection of aromatic sulfonates in waste-water effluents of industrial units producing optical whitening agents, has been developed. The separation was achieved on a reversed-phase Hypersil C18 column using gradient elution of a mobile phase consisting of 0.05 M ammonium formate-methanol with decreasing concentration of the buffer at room temperature. The minimum detection limits were determined to be in the range of 0.2 - 1.8 x 10(-9) g using PDA and ESI-MS detectors.
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