DETERMINATION OF NAPHTHALENESULPHONATES IN WATER BY ONLINE ION-PAIR SOLID-PHASE EXTRACTION AND ION-PAIR LIQUID-CHROMATOGRAPHY WITH DIODE-ARRAY UV DETECTION
R. Elharrak et al., DETERMINATION OF NAPHTHALENESULPHONATES IN WATER BY ONLINE ION-PAIR SOLID-PHASE EXTRACTION AND ION-PAIR LIQUID-CHROMATOGRAPHY WITH DIODE-ARRAY UV DETECTION, International journal of environmental analytical chemistry (Print), 69(4), 1998, pp. 295-305
Ion-pair solid-phase extraction was on-line coupled to a chromatograph
ic system with a PLRP-s precolumn and the results were compared with t
hose obtained when C-18 sorbents are used. After optimization, the met
hod was used to determine these compounds in two river waters. A sampl
e of 20 ml of river water was preconcentrated with good recovery value
s for all the compounds studied and detected at 220 nm with detection
limits between 0.25 and 0.1 mu g l(-1). Some of the compounds were pro
visionally determined by diode-array UV detection.