@article{article287f27f7, title = {Multicommutation in flow analysis part. 1. Binary sampling: concepts, instrumentation and spectrophotometric determination of iron in plant digests}, author = {Reis, Boaventura Freire dos and Giné-Rosias, Maria Fernanda Georgina and Zagatto, Elias Ayres Guidetti and Lima, J. L. F. C. and Lapa, R A}, year = {1994}, doi = {10.1016/0003-2670(94)00090-5}, journal = {Analytica Chimica Acta} }