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The study covered the analysis of 19 priority semivolatile organic compounds (SVOCs) frequently found in a total number of 644 surface water samples, including 46 different sites from throughout Portugal and corresponding to a period of 14 months, from April 1999 to May 2000. Main contamination sources of the analyzed SVOCs were identified and interpreted according to their chemical composition and according to their resolved geographical and temporal distribution profiles.<\/jats:p>","DOI":"10.1897\/03-176b","type":"journal-article","created":{"date-parts":[[2005,3,19]],"date-time":"2005-03-19T11:31:59Z","timestamp":1111231919000},"page":"565-575","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":39,"title":["Chemometric modeling of main contamination sources in surface waters of Portugal"],"prefix":"10.1093","volume":"23","author":[{"given":"Rom\u00e1","family":"Tauler","sequence":"first","affiliation":[{"name":"Department of Analytical Chemistry, University of Barcelona, Diagonal 647, Barcelona 08028, Spain"}]},{"given":"Silvia","family":"Lacorte","sequence":"additional","affiliation":[{"name":"Department of Environmental Chemistry, IIQAB-CSIC, Jordi Girona 18\u201326, Barcelona 08034, Spain"}]},{"given":"Miriam","family":"Guillam\u00f3n","sequence":"additional","affiliation":[{"name":"Department of Environmental Chemistry, IIQAB-CSIC, Jordi Girona 18\u201326, Barcelona 08034, Spain"}]},{"given":"Raquel","family":"Cespedes","sequence":"additional","affiliation":[{"name":"Department of Environmental Chemistry, IIQAB-CSIC, Jordi Girona 18\u201326, Barcelona 08034, Spain"}]},{"given":"Paula","family":"Viana","sequence":"additional","affiliation":[{"name":"Dire\u00e7ao Geral do Ambiente, Ministerio do Ambiente, Rua da Murgueira, Zambujal, 2720, Amadore, Portugal"}]},{"given":"Damia","family":"Barcel\u00f3","sequence":"additional","affiliation":[{"name":"Department of Environmental Chemistry, IIQAB-CSIC, Jordi Girona 18\u201326, Barcelona 08034, Spain"}]}],"member":"286","published-online":{"date-parts":[[2004,3,1]]},"reference":[{"year":"1976","author":"Commission of the European Communities.","key":"2025010612284805500_bib1"},{"volume-title":"Guidance document on elements for pollution reduction programs under article 7 of council directive 76\/464\/CEE","year":"1976","author":"Commission of the European Communities.","key":"2025010612284805500_bib2"},{"volume-title":"Handook of Chemometrics and Qualimetrics","year":"1998","author":"Massart","key":"2025010612284805500_bib3"},{"volume-title":"Chemometrics in Environmental Chemistry","year":"1997","author":"Einax","key":"2025010612284805500_bib4"},{"key":"2025010612284805500_bib5","first-page":"47","volume-title":"The Handbook of Environmental Chemistry","author":"Hopke","year":"1995"},{"key":"2025010612284805500_bib6","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1016\/0169-7439(91)80032-L","article-title":"An introduction to receptor modelling","volume":"10","author":"Hopke","year":"1991","journal-title":"Chemom Intell Lab Syst"},{"key":"2025010612284805500_bib7","doi-asserted-by":"crossref","first-page":"11","DOI":"10.1016\/0169-7439(89)80108-X","article-title":"Analysis of multiway (multimode) data","volume":"7","author":"Geladi","year":"1989","journal-title":"Chemom Intell Lab Syst"},{"key":"2025010612284805500_bib8","doi-asserted-by":"crossref","first-page":"143","DOI":"10.1016\/0169-7439(92)85005-N","article-title":"Three-way analysis. 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