Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Milton K. Sasaki"'
Publikováno v:
Journal of Analytical Methods in Chemistry, Vol 2020 (2020)
Salicylic acid (SA) is an important stress signaling phytohormone and plays an essential role in physiological processes in plants. SA fractionation has been carried out batchwise, which is not compatible with the high analytical demand in agronomica
Externí odkaz:
https://doaj.org/article/1221437088dc4b7f967db82bb152ccd3
Publikováno v:
Talanta. 168:303-306
An advanced strategy involving concentric tubes is proposed for fast and controlled heating (or cooling) of the reaction medium in flow analysis. Different temperatures are set by sequentially circulating two thermostated water streams through the ou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2fc15ec7632d1b5cb8f530b4428537d6
https://doi.org/10.1016/j.talanta.2017.03.058
https://doi.org/10.1016/j.talanta.2017.03.058
Autor:
Milton K. Sasaki, Fábio R.P. Rocha, Boaventura F. Reis, Pedro A. F. Souza, Marcos Yassuo Kamogawa
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
Mechanization of separation and preconcentration processes by flow analysis is noteworthy due to improved precision, low consumption of reagents and samples, as well as lower risks to the analyst, of analyte losses, and contamination. The low efficie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::04658d8a7d5d7fdf4d97d72792388464
Publikováno v:
Talanta. 226:122095
This paper presents a new analytical approach for element concentration determination in samples containing significant concentrations of dissolved and suspended interferences. The proposed system enables to segregate of the complex matrix, species o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ef79c45416e4ba581ff96c974b3fbe0
https://doi.org/10.1016/j.talanta.2021.122095
https://doi.org/10.1016/j.talanta.2021.122095
Autor:
Tayane A. Freitas, Oziel R. Marinho, Ronaldo C. Faria, Boaventura F. Reis, Manoel J.A. Lima, Fábio R.P. Rocha, Milton K. Sasaki
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
A novel approach for the detection of hydrogen peroxide as a milk adulterant via a colorimetric spot test and smartphone-based photometry is proposed. The procedure is based on analyte oxidation of iron(II) followed by formation of a red iron(III)-th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee87945d1a6e223a8493069e4aeed207
https://doi.org/10.1016/j.microc.2020.105042
https://doi.org/10.1016/j.microc.2020.105042
Publikováno v:
Analytical Letters. 49:627-638
A novel strategy for preparing polyethylene open tubular reactors coated with MnO2(s) was pioneered for flow analysis in order to minimize the inherent drawbacks of packed solid reagents. As an application, the determination of ascorbic acid in pharm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b923c098f6172362e7c001d9062df360
https://doi.org/10.1080/00032719.2014.979353
https://doi.org/10.1080/00032719.2014.979353
Autor:
Milton K. Sasaki, João A.V. Prior, João L.M. Santos, David S.M. Ribeiro, Christian Frigerio, Elias A.G. Zagatto
Publikováno v:
Luminescence. 29:901-907
An automated multi-pumping flow system is proposed for the chemiluminometric determination of ascorbic acid in pharmaceutical formulations, relying on the ability of semiconductor nanocrystals to generate short-lived reactive species upon photo-irrad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::487df89d86bb47a45d2210c62c517544
https://doi.org/10.1002/bio.2639
https://doi.org/10.1002/bio.2639
Publikováno v:
The Analyst. 139:3666-3682
The main contributions of Brazilian researchers to the field of flow analysis are reviewed, with an emphasis on historical developments, conceptual aspects, system design, and analytical applications. Contributions after the advent of flow injection
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cd5a450e670a9021a77893b02fb41f3
https://doi.org/10.1039/c4an00295d
https://doi.org/10.1039/c4an00295d
Autor:
Milton K. Sasaki
Publikováno v:
The Open Analytical Chemistry Journal. 6:28-38
Simultaneous determinations exploiting the rates of reactions of different analytes with a common reagent, often referred to as differential kinetic analysis, is efficiently implemented in the flow analyser. To this end, specific strategies for pumpi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5de3eaa5d3836ac3b125a39c05b7bc1
https://doi.org/10.2174/1874065001206010028
https://doi.org/10.2174/1874065001206010028
Publikováno v:
Analytica chimica acta. 902
The feasibility of implementing tracer-monitored titrations in a flow system is demonstrated. A dye tracer is used to estimate the instant sample and titrant volumetric fractions without the need for volume, mass or peak width measurements. The appro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6bc0cff6bf17e606b06a199e0ae4b937
https://pubmed.ncbi.nlm.nih.gov/26703261
https://pubmed.ncbi.nlm.nih.gov/26703261