Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/3357
Título: Multi-pumping flow system for the determination of dissolved orthophosphate and dissolved organic phosphorus in wastewater samples
Autor: Pons, Carmen
Tóth, Ildikó V.
Rangel, António O.S.S.
Forteza, Rafael
Cerdà, Víctor
Palavras-chave: Multi-pumping flow system
Orthophosphate
Organic phosphorus
UV photo-oxidation
Data: 2006
Editora: Elsevier
Citação: PONS, Carmen ...[et al.] - Multi-pumping flow system for the determination of dissolved orthophosphate and dissolved organic phosphorus in wastewater samples. Analytica Chimica Acta. ISSN 0003-2670. Vol. 572, n.º 1 (2006), p. 148-154
Resumo: A multi-pumping flow system (MPFS) for the spectrophotometric determination of dissolved orthophosphate and dissolved organic phosphorus in wastewater samples is proposed. The determination of orthophosphate is based on the vanadomolybdate method. In-line ultraviolet photooxidation is employed to mineralise organic phosphorus to orthophosphate prior to detection. A solenoid valve allows the deviation of the flow towards the UV-lamp to carry out the determination of organic phosphorus. Calibration was found to be linear up to 20 mg P L−1, with a detection limit (3sb/S) of 0.08 mg P L−1, an injection throughput of 75 injections h−1 and a repeatability (R.S.D.) of 0.6% for the direct determination of orthophosphate. On the other hand, calibration graphs were linear up to 40 mg P L−1, with a detection limit (3sb/S) of 0.5 mg P L−1, an injection throughput of 11 injections h−1 and a repeatability (R.S.D.) inferior to 2.3% for the procedures involving UV photo-oxidation.
URI: http://hdl.handle.net/10400.14/3357
Versão do Editor: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TF4-4JYSCRN-1&_user=2460358&_coverDate=07%2F14%2F2006&_rdoc=21&_fmt=high&_orig=browse&_origin=browse&_zone=rslt_list_item&_srch=doc-info%28%23toc%235216%232006%23994279998%23627131%23FLA%23display%23Volume%29&_cdi=5216&_sort=d&_docanchor=&_ct=23&_acct=C000057417&_version=1&_urlVersion=0&_userid=2460358&md5=e3e9b9f5d3c7ca951972e98b986e4b26&searchtype=a
Aparece nas colecções:ESB - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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