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It involves an SPE procedure, an on\u2010line preconcentration normal stacking mode and subsequent separation and determination using CE with UV detection (CE\u2010UV). <jats:italic>p<\/jats:italic>\u2010Sulfobenzoic acid was used as internal standard. The compounds were separated with an uncoated capillary and a 25\u2005mM ammonium acetate\/acetic acid buffer solution (pH\u20055.5) with 2\u2010propanol (30% v\/v) and 0.75\u2005mM CTAB. Analyses were run at \u221225\u2005kV, 25\u00b0C, and 100\u2005s of hydrodynamic injection with UV detection at 225\u2005nm. Quantification limits found ranged between 4 and 6\u2005ng\/mL. The proposed method was validated using a recovery assay. It was satisfactorily used for the determination of these compounds in groundwater samples to track down the biodegradation of linear alkylbenzene sulfonates in an agricultural soil from the fertile plain of Granada (Spain).<\/jats:p>","DOI":"10.1002\/elps.200700403","type":"journal-article","created":{"date-parts":[[2007,12,13]],"date-time":"2007-12-13T10:18:39Z","timestamp":1197541119000},"page":"516-525","source":"Crossref","is-referenced-by-count":10,"title":["Determination of sulfophenyl carboxylic acids in agricultural groundwater samples by CE with ultraviolet absorption detection"],"prefix":"10.1002","volume":"29","author":[{"given":"Inmaculada","family":"Jim\u00e9nez\u2010D\u00edaz","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Oscar","family":"Ballesteros","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9 Luis","family":"V\u00edlchez","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alberto","family":"Naval\u00f3n","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2008,1,18]]},"reference":[{"key":"e_1_2_1_2_2","first-page":"189","volume-title":"Soaps, Detergents, Oleochemicals, and Personal Care Products (SODEOPEC)","author":"Berna J. 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