An electron spin resonance (ESR) method already in use for the quantitative analysis of paraquat was applied to the analysis of diquat in blood, serum, urine, tissue homogenates and several drinks without purification of the samples. The diquat radical produced with ascorbic acid at alkaline pH was
Determination of diquat in real samples by electron spin resonance spectometry
✍ Scribed by Angela Sánchez-Palacios; Tomás Pérez-Ruiz; Carmen Martínez-Lozano
- Book ID
- 102980724
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 574 KB
- Volume
- 268
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
A simple, selective and sensltlve method for the determmatlon of the herbicide dlquat m different materials 1s described The dlquat radical generated by its reduction with alkaline sodium dlthlonlte can be detected by electron spm resonance (ESR) spectrometry at room temperature There IS a linear relatlonshlp between dlquat concentration and the intensity of the central line of the ESR spectrum over the range l-100 pg ml-' The method has been successfully applied to the determmatlon of dlquat m different matrices
📜 SIMILAR VOLUMES
The use of electron spin resonance spectrometry with a modern instrument is described for the determination of polynuclear aromatic hydrocarbons (PAHs) down to nanogram levels, after adsorption on calcined silica/alumina. A single PAH or the total number of moles of PAHs can be determined. Implicati