Abstract：
:In this work, an analytical flow system able to perform low pressure chromatography with amperometric detection is presented. As case study, the determination of niacin (vitamin B3) in coffee brewed samples was selected. The manifold comprised a 1.0 cm length monolithic column coated with didecyldimethylammonium bromide, a laboratory-made boron doped diamond electrode, and featured in-line ionic strength adjustment of the mobile phase. The figures of merit concerning the selected case study namely, detection limit, 7.90 × 10(-7) M, determination rate, ca. 10 samplesh(-1), mobile phase and ISA solution consumption, ca. 2.6 mL per analysis, and CV, below 5% for retention time and peak height, showed the competitiveness of this analytical strategy comparing to the described HPLC methods for niacin determination. The strategy displays a simple configuration, low cost, fast and easy assembling, foreseeing its use to general purpose applications.
journal_name
Food Chemjournal_title
Food chemistryauthors
Santos JR,Rangel AOdoi
10.1016/j.foodchem.2015.04.093subject
Has Abstractpub_date
2015-11-15 00:00:00pages
152-8eissn
0308-8146issn
1873-7072pii
S0308-8146(15)00639-1journal_volume
187pub_type
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