%0 Journal Article %1 WOS:000239388400041 %A Gomes, Marcos S %A Trevizan, Lilian C %A Nobrega, Joaquim A %A Gouveia, Sandro T %A Rocha, Fabio R P %C CAIXA POSTAL 26037, 05599-970 SAO PAULO, BRAZIL %D 2006 %I SOC BRASILEIRA QUIMICA %J QUIMICA NOVA %K absorption absorption; analysis} instrumental molecular spectrometry; undergraduate {atomic %N 4 %P 868-871 %T Integration of analytical techniques and undergraduate laboratory in instrumental analysis: Use of an atomic absorption spectrometer for molecular absorption measurements. %V 29 %X Simple experiments are proposed for measuring molecular absorption of chromate and dichromate ions using an atomic absorption spectrometer. The experiments can help undergraduate students in instrumental analysis courses understand important aspects involving conceptual and instrumental similarities and differences between frequently used analytical techniques. Hollow cathode lamps were selected with wavelengths in the region of molecular absorption of chromate and dichromate. Calibration curves were obtained and the linear dynamic range was evaluated. Results were compared with those obtained in a molecular absorption spectrometer. The molar absorptivities obtained were also compared.

@article{WOS:000239388400041, abstract = {Simple experiments are proposed for measuring molecular absorption of chromate and dichromate ions using an atomic absorption spectrometer. The experiments can help undergraduate students in instrumental analysis courses understand important aspects involving conceptual and instrumental similarities and differences between frequently used analytical techniques. Hollow cathode lamps were selected with wavelengths in the region of molecular absorption of chromate and dichromate. Calibration curves were obtained and the linear dynamic range was evaluated. Results were compared with those obtained in a molecular absorption spectrometer. The molar absorptivities obtained were also compared.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {CAIXA POSTAL 26037, 05599-970 SAO PAULO, BRAZIL}, author = {Gomes, Marcos S and Trevizan, Lilian C and Nobrega, Joaquim A and Gouveia, Sandro T and Rocha, Fabio R P}, biburl = {https://www.bibsonomy.org/bibtex/27beebddeecafa133ea3bdf60c66a26fb/ppgfis_ufc_br}, interhash = {f8371fe171f9af3bd91033fc8a0ea360}, intrahash = {7beebddeecafa133ea3bdf60c66a26fb}, issn = {0100-4042}, journal = {QUIMICA NOVA}, keywords = {absorption absorption; analysis} instrumental molecular spectrometry; undergraduate {atomic}, number = 4, pages = {868-871}, publisher = {SOC BRASILEIRA QUIMICA}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Integration of analytical techniques and undergraduate laboratory in instrumental analysis: Use of an atomic absorption spectrometer for molecular absorption measurements.}, tppubtype = {article}, volume = 29, year = 2006 }