Publication
Potentiometric determination of cetylpyridinium chloride in oral desinfectants by flow injection analysis
| dc.contributor.author | Baptista, Paula | |
| dc.contributor.author | Araújo, Alberto N. | |
| dc.contributor.author | Montenegro, Maria da Conceição B.S.M. | |
| dc.date.accessioned | 2008-10-24T15:51:51Z | |
| dc.date.available | 2008-10-24T15:51:51Z | |
| dc.date.issued | 2003 | |
| dc.description.abstract | The work describes a new procedure for cetylpyridinium chloride determination in oral disinfectants, based on a flow-injection system with potentiometric detection. The determination was based on the measurement of picrate concentration decrease as result of ion-pair reaction with the analyte present in the injected sample. In the optimised set-up the sample injection volume was kept at 400 µL and merged downstream with the reagent solution containing 1,0 x10-5 mol/L of picrate adjusted to pH 5.0 with citrate/citric acid buffer. The flow rate was fixed at 8 mL/min and the reactor length at 40 cm. The proposed procedure enables the determination of cetylpyridinium in the analytical range of 5,0x10-6 – 7,5x10-5 mol/L at a sampling rate of 60/h. The results for real samples had a precision better than 3% and were comparable to the labelled values. | en |
| dc.identifier.citation | Baptista, Paula; Araújo, Alberto N.; Montenegro, Maria da Conceição B. S. M. (2003). Determinação potenciométrica em fluxo de cloreto de cetilpiridinio em desinfectantes bucais = Potentiometric determination of cetylpyridinium chloride in oral desinfectants by flow injection analysis. Quimica Nova. ISSN 0100-4042. 26:4, p. 475-478 | en |
| dc.identifier.doi | 10.1590/s0100-40422003000400005 | |
| dc.identifier.issn | 0100-4042 | |
| dc.identifier.uri | http://hdl.handle.net/10198/938 | |
| dc.language.iso | por | en |
| dc.publisher | Sociedade Brasileira de Química | en |
| dc.subject | Potentiometry | en |
| dc.subject | Oral disinfectants | en |
| dc.subject | FIA | en |
| dc.subject | Ion-selective electrodes | en |
| dc.subject | Cationic surfactants | en |
| dc.subject | Spectrophotometric determination | en |
| dc.subject | Pharmaceutical preparations | en |
| dc.subject | Capillary electrophoresis | en |
| dc.subject | Pair extraction | en |
| dc.subject | Construction | en |
| dc.subject | Titrations | en |
| dc.subject | Sensor | en |
| dc.title | Potentiometric determination of cetylpyridinium chloride in oral desinfectants by flow injection analysis | en |
| dc.title.alternative | Determinação potenciométrica em fluxo de cloreto de cetilpiridinio em desinfectantes bucais | en |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| person.familyName | Baptista | |
| person.givenName | Paula | |
| person.identifier.ciencia-id | 7D11-FE1E-CD0F | |
| person.identifier.orcid | 0000-0001-6331-3731 | |
| person.identifier.scopus-author-id | 14051688000 | |
| rcaap.rights | openAccess | |
| rcaap.type | article | en |
| relation.isAuthorOfPublication | 3f35226a-b17a-4f7d-8da1-3297105cbfe9 | |
| relation.isAuthorOfPublication.latestForDiscovery | 3f35226a-b17a-4f7d-8da1-3297105cbfe9 |