Determination of the pesticides 2,4-d, 2-naphthoxy- acetic acid, and silvex by low temperature phosphorimetry

Heavy Atom Induced Room Temperature Phosphorescence Method for the Determination of the Plant Growth Regulator β-Naphthoxyacetic Acid

“…Recently, different methodologies such as sensitized room temperature phosphorescence (RTP), micelle-stabilized RTP, or the use of cyclodextrins combined with sodium sulfite as oxygen scavenger have allowed for development of RTP methods for numerous compounds in solution (Dı ´az-Garcı ´a and Sanz-Medel, 1986;Sanz-Medel et al, 1987;Hurtubise, 1990;Cruces Blanco et al, 1996;Segura Carretero et al, 1996, 1997. Only a few phosphorimetric methods have been pro-posed for this compound, mainly at low temperature (Sanders and Winefordner, 1972;Trautwein and Guyon, 1983), with only three at room temperature with solid support , cyclodextrin (Mun ˜oz de la Pen ˜a et al, 1993), or micellar medium (Segura Carretero et al, 1996).…”

Application of Derivative Variable-angle Synchronous Scanning Phosphorimetry in a Microemulsion Medium for the Simultaneous Determination of 2-Naphthoxyacetic Acid and 1-Naphthalenacetamide

“…Despite the native fluorescence of NAD, 20,21 the possibility of applying phosphorescence detection has not previously been considered. With respect to NOA, only a few phosphorimetric methods have been proposed, mainly at low temperature, [22][23][24] with only two using room temperature with a solid support 25,26 or micellar 27 or organized media. 28 As the derivative method permits the division of total luminescence spectra into positive and negative parts, better resolution for simultaneous quantification can be achieved by comparison of the derivative variable-angle phosphorescent emission-excitation matrices of both compounds, allowing one to find zones where quantification can be carried out without interferences from other compounds in the mixture.…”