Automating solid-phase extraction: current aspecs and future prospekts

Rossi, David T.; Zhang, Nanyan

doi:10.1016/s0021-9673(99)00984-x

Cited by 113 publications

(54 citation statements)

References 124 publications

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“…This extraction mixture was selected for further experiments. Nevertheless, the amount of matrix components was rather higher than acetonitrile and/or methanol, they could be removed easily in the following clean-up step realised by SPE that is widely used for sample preparation prior to HPLC analysis of various pesticides (Hennion 1998(Hennion , 1999Rossi & Zhang 2000). The results of SPE clean up optimisation Relative absorbance Time (min) experiments are summarised in Table 2.…”

Section: Optimisation Of Methods Performance Characteristicsmentioning

confidence: 99%

HPLC-MS/MS method for analysis of isoproturon in difficult matrix: poppy seeds

Kovalczuk¹,

Poustka²,

Hajšlová³

2008

Czech J. Food Sci.

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Kovalczuk T., Poustka J., Hajšlová J. (2008): HPLC-MS/MS method for analysis of isoproturon in difficult matrix: poppy seeds. Czech J. Food Sci., 26: 146-152.While several validated methods have been developed for analysis of phenylurea herbicides in staple food plants, analytical procedures suitable for their quantification in minor crops such as poppy seeds are not available. For the registration of isoproturon use in this crop, the documentation of dynamics of its residues following treatment was requested. To accomplish this task, HPLC-MS/MS method was developed. Extraction of residues was realised by methanol-water mixture, Supelclean LC-18 SPE cartridges were used for purification of crude extracts. For HPLC separation of isoproturon SPE fraction Lichrospher C18 column (25 cm × 4 mm, 5 µm) was employed. For detection and quantification of target analyte, mass spectrometer with ion trap analyser operated in positive atmospheric pressure chemical ionisation (APCI) and MS/MS mode was used. Following performance parameters of method were obtained: detection limit 0.01 mg/kg, recovery 84%, and repeatability 7%.

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Section: Optimisation Of Methods Performance Characteristicsmentioning

confidence: 99%

HPLC-MS/MS method for analysis of isoproturon in difficult matrix: poppy seeds

Kovalczuk¹,

Poustka²,

Hajšlová³

2008

Czech J. Food Sci.

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“…Sample preparation is the most tedious and time consuming step and a possible source of errors (Huck and Bonn [13]; He et al [14]). Automated solid phase extraction was employed as it is more rapid, precise and accurate compared to the conventional manual SPE extraction (Parker et al [15]; Rossi and Zhang [16]). …”

Section: Solid Phase Extractionmentioning

confidence: 99%

Method development for the influence of matrix on selected organochlorine pesticide residue analysis in surface water by GC-MS

Rimayi¹,

Mtunzi²,

Wyk³

et al. 2012

Water Pollution XI

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An automated solid phase extraction (SPE) method coupled to GC-MS method for the analysis of selected organochlorine pesticides was developed and validated for the purposes of studying the matrix effects. The analytical method showed a significant degree of validity when tested against parameters such as linearity, repeatability and sensitivity. Four different reversed sorbent phases, including a Supelco LC18, Strata C18-E and Strata-X (styrene divinyl benzene) were tested for organochlorine extraction efficiency. The LC-18 proved to be the most robust and effective sorbent phase as it produced better recoveries varying from 90-130% for most analytes. It was then concluded that the method developed was suitable for further research towards the influence of the matrix on selective determination of the selected organochlorine pesticides.

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“…High recoveries through the clean-up process are obtained when analytes are strongly retained by the sorbent in the presence of water, and have a subsequent low retention during elution by organic solvents (Pichon 2000). SPE can be used off-line, where sample clean-up is completely separate from the subsequent chromatographic analysis, or it can be performed on-line, where it is directly integrated into the analytical system (Rossi & Zhang 2000). The advantages of on-line SPE include minimum sample manipulation, full automation, high throughput, ease of application and costefficiency (Kampioti et al 2005).…”

Section: (I) Pre-treatmentmentioning

confidence: 99%

Practical overview of analytical methods for endocrine-disrupting compounds, pharmaceuticals and personal care products in water and wastewater

Comerton

Bagley

2009

Phil. Trans. R. Soc. A.

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The detection of organic micropollutants, such as endocrine-disrupting compounds, pharmaceuticals and personal care products, in wastewater and the aquatic environment has brought increasing concern over their potential adverse ecological and human impacts. These compounds are generally present at trace levels (ng l −1 ) and in complex water matrices, such as wastewaters and surface waters, making their analysis difficult. Currently, no standardized analytical methods are available for the analysis of organic micropollutants in environmental waters. Owing to the diversity of physico-chemical properties exhibited by the various classes of organic micropollutants, the majority of established analytical methods described in the literature focus on a specific class of compounds, with few methods applicable to multi-class compound analysis. As such, analytical challenges and limitations contribute to the lack of understanding of the effectiveness of drinking water and wastewater treatment processes to remove organic micropollutants. This paper provides a practical overview of current analytical methods that have been developed for the analysis of multiple classes of organic micropollutants from various water matrices and describes the challenges and limitations associated with the development of these methods.

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Automating solid-phase extraction: current aspecs and future prospekts

Cited by 113 publications

References 124 publications

HPLC-MS/MS method for analysis of isoproturon in difficult matrix: poppy seeds

HPLC-MS/MS method for analysis of isoproturon in difficult matrix: poppy seeds

Method development for the influence of matrix on selected organochlorine pesticide residue analysis in surface water by GC-MS

Practical overview of analytical methods for endocrine-disrupting compounds, pharmaceuticals and personal care products in water and wastewater

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