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| Issue Date | Title | Author(s) | | 1998 | ICP–AES determination of small amounts of zinc in copper-base alloys after separation by adsorption of the zinc–TAN complex on Sep Pak C18 cartridges | Teixeira, Leonardo Sena Gomes; Reis, José Oscar N.; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis Costa; Korn, Maria das Graças Andrade; Andrade, Jailson Bittencourt de |
| 1994 | Spectrophotometric and derivative spectrophotometric determination of aluminium with Hydroxynaphthol Blue | Ferreira, Sergio Luis Costa; Leite, Neide O.; Dantas, Alailson Falcão; Andrade, Jailson Bittencourt de; Costa, Antonio Celso Spinola |
| 1996 | Spectrophotometric and derivative spectrophotometric determination of nickel with hydroxynaphthol blue | Ferreira, Sergio Luis Costa; Santos, Bruno F.; Andrade, Jailson Bittencourt de; Costa, Antonio Celso Spinola |
| 1997 | Spectrophotometric and inductively coupled plasma atomic emission spectrometric determination of titanium in ilmenites after rapid dissolution with phosphoric acid | Andrade, Jailson Bittencourt de; Nunes, Genebaldo S.; Veiga, Merilio P.; Costa, Antonio Celso Spinola; Ferreira, Sergio Luis Costa; Amorim, Adelaide Maria Mendonça; Reis, Selma T. |
| 1994 | Spectrophotometric and derivative spectrophotometric determination of aluminium with Hydroxynaphthol Blue | Ferreira, Sergio Luis Costa; Leite, Neide O.; Dantas, Alailson Falcão; Andrade, Jailson Bittencourt de; Costa, Antonio Celso Spinola |
| 2004 | Determination of formaldehyde in Brazilian alcohol fuels by flow-injection solid phase spectrophotometry | Teixeira, Leonardo Sena Gomes; Leão, Elsimar S.; Dantas, Alailson Falcão; Pinheiro, Heloísa Lúcia C.; Costa, Antonio Celso Spinola; Andrade, Jailson Bittencourt de |
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