High-performance liquid chromatographic determination of pesticides in tomatoes using laboratory-made NH2 and C18 solid-phase extraction materials

Melo, Lúcio Flávio Costa; Collins, Carol H.; Jardim, Isabel Cristina Sales Fontes

doi:10.1016/j.chroma.2004.09.043

Cited by 62 publications

(23 citation statements)

References 24 publications

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“…Pesticides are widely used against plant pests and diseases [1][2] . Although the use of pesticides provides unquestionable benefits in providing a plentiful, low-cost supply of high-quality fruits and vegetables, their incorrect application may leave a potential risk to humans, animals and the environment [3][4] .…”

Section: Introductionmentioning

confidence: 99%

Efficient High‐Performance Liquid Chromatography with Liquid‐Liquid Partition Cleanup Method for the Determination of Pymetrozine in Tobacco

et al. 2007

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For the first time, a novel, simple and reliable method for analysis of pymetrozine residues in flue-cured tobacco leaves has been developed utilizing HPLC-UV with liquid-liquid partition cleanup. Pre-treatment with ultrasonic extraction and liquid-liquid partition procedures gave preferable baseline separation and clean chromatograms by removing water-soluble and fat-soluble components which interfere with pymetrozine in the test. The performance of the method was evaluated and validated: the detection limit (LOD) was 0.005 microg x mL(-1), the relative standard deviation (RSD) was 1.2% (n = 5), and the overall recovery was above 90% at fortification levels of 0.200, 0.500, 1.000, and 5.000 mg x kg(-1). The proposed method was successfully employed for the determination of pymetrozine residues in twelve flue-cured tobacco samples collected from different regions of China.

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Section: Introductionmentioning

confidence: 99%

Efficient High‐Performance Liquid Chromatography with Liquid‐Liquid Partition Cleanup Method for the Determination of Pymetrozine in Tobacco

et al. 2007

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“…Numerous analytical methods have been reported for quantitation of benzimidazole fungicides in different matrices based on spectrophotometry (Chiba, 1977), fluorimetry Cuesta et al 2003), phosphorimetry (Salinas y et al 2005), electrochemical (Huebra et al 2000), enzyme-linked immuno-sorbent assay (Itak et al 1993), gas chromatography-mass spectrometry (Lesueur et al 2008), although is routinely carried out by high performance liquid chromatography coupled with ultraviolet (Melo et al 2005;Singh et al 2007;Prousalis et al 2004), fluorescence (Moral et al 2006;Hu et al 2008), and mass spectrometry (Radisic et al 2009) detectors. These methods have many advantages of high sensitivity and accuracy and some of them have been adopted by regulatory agencies.…”

Section: Detection and Determination Methodsmentioning

confidence: 99%

Benzimidazole Fungicides in Environmental Samples: Extraction and Determination Procedures

Rodríguez¹,

Torres-Padrón²,

Aufartová³

et al. 2010

Fungicides

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“…Most of the reported methods for ametryn determination involves non-aqueous capillary electrophoresis (Carabias-Martínez et al 2006), molecularly imprinted polymer (Sambe et al 2007), micellar electrokinetic capillary chromatography (Frías et al 2004), high-performance liquid chromatography (Melo et al 2005;Maria et al 2000;do Nascimento et al 2005), and gas chromatography (Queiroz et al 1999;Bardalaye et al 1984) after liquid-liquid extraction, solid-phase extraction (Menda et al 2001), or solidphase microextraction (Zambonin and Palmisano 2000). These methods are expensive, have high separation times, and sometimes need the development of extremely complex gradient for the separation.…”

Section: Introductionmentioning

confidence: 99%

Determination of ametryn in sugarcane and ametryn–atrazine herbicide formulations using spectrophotometric method

Shah

Jan

Ara

et al. 2011

Environ Monit Assess

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A sensitive spectrophotometric method has been developed for determination of ametryn in agricultural samples. The proposed method was based on reaction with pyridine and further coupling with sulfanilic acid to form a colored product. The absorbance was measured at 400 nm with a molar absorptivity of 2.1 x 10(5) L mol(-1) cm(-1). The method shows a linear range from 0.2-20 μg mL(-1) with limit of detection and limit of quantification 0.16 and 0.54 μg mL(-1), respectively. The method has been successfully applied to the determination of ametryn in sugarcane juice and commercial formulations after separation of ametryn from triazine herbicides based on solvent extraction. Recovery values were found to be in the range of 96.0 ± 0.2% to 98.4 ± 0.1%.

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High-performance liquid chromatographic determination of pesticides in tomatoes using laboratory-made NH2 and C18 solid-phase extraction materials

Cited by 62 publications

References 24 publications

Efficient High‐Performance Liquid Chromatography with Liquid‐Liquid Partition Cleanup Method for the Determination of Pymetrozine in Tobacco

Efficient High‐Performance Liquid Chromatography with Liquid‐Liquid Partition Cleanup Method for the Determination of Pymetrozine in Tobacco

Benzimidazole Fungicides in Environmental Samples: Extraction and Determination Procedures

Determination of ametryn in sugarcane and ametryn–atrazine herbicide formulations using spectrophotometric method

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