Stereoselective analysis of acid herbicides in natural waters by capillary electrophoresis

Polcaro, C.; Marra, Carolina; Desiderio, Claudia; Fanali, Salvatore

doi:10.1002/(sici)1522-2683(19990801)20:12<2420::aid-elps2420>3.0.co;2-p

Cited by 21 publications

(16 citation statements)

References 11 publications

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“…Thus, the detection from 3610 28 to 5610 26 M of different drugs in plasma [64], serum [65], and urine [66,67] has been performed. In addition, the detection up to 10 210 or 10 27 M of phenoxy acid herbicides in spiked water samples [68,69] as well as the detection of the pesticides vinclozolin (,10 26 M), maleic hydrazide and imazalil (3610 27 M), in beverages and vegetables [70][71][72] has been achieved. Offline LLE has been employed for the extraction and preconcentration of drugs in biological samples and pollutants in culture media.…”

Section: Offline Sample Treatment Techniques For Sensitive Chiral Anamentioning

confidence: 99%

Sensitive chiral analysis by capillary electrophoresis

García-Ruiz

Marina

2006

Electrophoresis

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Sensitive chiral analysis by capillary electrophoresisIn this review, an updated view of the different strategies used up to now to enhance the sensitivity of detection in chiral analysis by CE will be provided to the readers. With this aim, it will include a brief description of the fundamentals and most of the recent applications performed in sensitive chiral analysis by CE using offline and online sample treatment techniques (SPE, liquid-liquid extraction, microdialysis, etc.), on-column preconcentration techniques based on electrophoretic principles (ITP, stacking, and sweeping), and alternative detection systems (spectroscopic, spectrometric, and electrochemical) to the widely used UV-Vis absorption detection.

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Section: Offline Sample Treatment Techniques For Sensitive Chiral Anamentioning

confidence: 99%

Sensitive chiral analysis by capillary electrophoresis

García-Ruiz

Marina

2006

Electrophoresis

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“…1 some structures of these phenoxy acids). One important detail that should be realized from Table 1 is that only few of these works deal with CE enantioseparation of pollutants in real matrixes (e.g., wine [52], water [24,33,43], or soil [22,38]), most of the studies being carried out with pure standards. A possible explanation can be the relatively low sensitivity of CE; this limitation makes the direct application of CE to real life samples difficult since pesticides are usually in very low concentrations there.…”

Section: Chiral Analysis Of Pesticidesmentioning

confidence: 99%

“…Polcaro et al [33] separated mecoprop, fenoprop, fluazifop, and haloxyfop enantiomers using vancomycin and g-CD as chiral selectors. These pesticides were determined in extracts from ground and river water obtained by SPE on styrene-divinylbenzene cartridges (SBD-1).…”

Section: Chiral Analysis Of Pesticidesmentioning

confidence: 99%

Chiral analysis of pollutants and their metabolites by capillary electromigration methods

et al. 2005

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Chiral analysis of pollutants and their metabolites by capillary electromigration methodsChiral separation of enantiomers is one of the most challenging tasks for any analytical technique including CE. Since the first report in 1985 showing the great possibilities of CE for the separation of chiral compounds, the amount of publications concerning this topic has quickly increased. Although chiral electromigration methods have mainly been used for enantioseparation of drugs and pharmaceuticals, they have also been applied to analyze chiral pollutants. This article intends to provide an updated overview, including works published till January 2005, on the principal applications of CE to the chiral analysis of pollutants and their metabolites, with especial emphasis on articles published in the last 10 years. The main advantages and drawbacks regarding the use of CE for chiral separation of pollutants are addressed including some discussion on the foreseen trends of electromigration procedures applied to chiral analysis of contaminants. IntroductionSeparation of chiral compounds is an interesting and challenging topic of research in many analytical chemistry areas, especially in the biomedical, pharmaceutical, and environmental fields where pure enantiomeric forms are widely required. It is already well-known that enantiomers, in spite of their very similar structure, when exposed to an identical biological environment can show very different biological activity. Furthermore, as a general rule, when the toxicological effect of an active substance is directly related to its desired biological activity, the most active isomer is usually the most toxic one Abbreviations: Allyl-TER, 1-allylterguride; ANDSA, 7-aminonaphthalene-1,3-disulfonic acid; ANSA, 5-aminonaphthalene-1-sulfonic acid; ANTS, 8-aminonaphthalene-1,3,6-trisulfonic acid; CA, chrysanthemic acid; CM-ª-CD, carboxymethylated-g-CD; CMBA, 2-(4-chlorophenyl)-3-methylbutanoic acid; 2,2-CPPA, 2-(2-chlorophenoxy)-propionic acid; 2,3-CPPA, 2-(3-chlorophenoxy)-propionic acid; 2,4-CPPA, 2-(4-chlorophenoxy)-propionic acid; â-CD-NH 2 , 6-monodeoxy-6-monoamino-b-CD; â-CD- (NH 3 )

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“…77,212 Recently, vancomycin was evaluated as the chiral selector for the quantitation of loxiglumide enantiomers, 213 acidic herbicides in groundwater and river water, 214 and for the hyphenation of electrophoretic chiral separations with electrospray mass spectrometry. 215,216 In MEKC with sodium dodecyl sulfate as the micelle-forming constituent, vancomycin resolves a variety of uncharged hydrophobic drugs and pesticides.…”

Section: E Macrocyclic Antibioticsmentioning

confidence: 99%