Trace-level determination of pesticide residues using on-line solid-phase extraction-column liquid chromatography with atmospheric pressure ionization mass spectrometric and tandem mass spectrometric detection

Slobodnı́k, Jaroslav; Hogenboom, A.C.; Vreuls, J. J.; Rontree, J. A.; Baar, Ben L. M. van; Niessen, W.M.A.; Brinkman, U.A.Th.

doi:10.1016/0021-9673(96)00139-2

Cited by 103 publications

(56 citation statements)

References 22 publications

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“…Whereas no ions could be attributed to dicofol and endosulfan (~, J3 or sulphate), at the concentrations studied, when using PI mode. Significant ions of each individual compounds acquired using NI mode are shown in Table I (20) [M-CH2CHCH2] 235 (15) [M-CI+O-CH2CHCH2-H] 219 (25) [ Chlorpyriphos ethyl, 10 ~tg mL ; 7 = Endosulfan 13, 100 ~tg mL ; and 8 = Dicofol, 100 ~tg mL . Figure 1 shows the results of LC-APCI-MS analysis of an eight-pesticide mixture.…”

Section: Lc-apci-msmentioning

confidence: 99%

Comparison of gas and liquid chromatography coupled to mass spectrometry for the residue analysis of pesticides in organges

2001

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SummaryLiquid chromatography-mass spectrometry (LC-MS) with atmospheric pressure chemicaJ ionization (APCI), and gas chromatography-mass spectrometry (GC-MS) with electron impact ionization (El), are compared for the determination of eight pesticides in oranges. Seven of the selected pesticides, chlorpyriphos, chlorpyriphos-methyl, imazalil, ~ and 13-endosulfan, endosulfan sulphate and dicofol, are commonly determined by GC whereas one, thiabendazole, can only be directly determined by LC. Primary ions [M-H 1-or [M-CI+O]-are obtained using LC-APCI-MS in negative ionization (NI) mode. In contrast, a high degree of fragmentation is reported with GC-MS. Both techniques were applied to oranges, which had been previously extracted with ethyl acetate and anhydrous sodium sulphate. The data indicate equivalent detection limits that range from 0.01 to 0.1 mg kg 1 and similar degree of specificity. Mean recoveries ranged from 82% for 0~-endosulfan to 96% for imazalil, with relative standard deviation ranging from 7 to 17%.

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Section: Lc-apci-msmentioning

confidence: 99%

Comparison of gas and liquid chromatography coupled to mass spectrometry for the residue analysis of pesticides in organges

2001

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“…Many analytical techniques was introduced to determination of organophosphorus pesticides (OPs) in water including gas chromatographymass spectrometry (GC-MS) [3,4,5]. High performance liquid chromatography (HPLC) and mass spectrometric (LCMS) or diode array detection (LC-DAD) [6,7,8,9,10]. A disadvantage of the HPLC, CE and GC analysis in general the analysis takes long time and limited sensitivity, costly and require high purity grade of organic solvents of HPLC [11,12,13].…”

Section: Introductionmentioning

confidence: 99%

New High Throughput Microtiter Plates for Detection of Organophosphorous Pesticides in Environmental Samples.

Abd-el-Kader¹

2017

IJPSR

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Quenching of lanthanides luminescence of a novel long live Tb(III) -Ethyl 1-Allyl-1,2-Dihydro-4-Hydroxy-2-Oxoquinoline-3-Carboxylate (EADHOC) as a ligand to form a complex with molar ratio 1:3 in solution has been studied in ethanol in presence of organophosphorus pesticides both Di-chlorvos(P1) and paraoxon-Ethyl (P2). The intensity of luminescence of Tb(III) -(EADHOC) decrease as the concentration of pesticides increase. The quenching effect was observed with both pesticides. Direct methods of determination of pesticides under investigated have been developed by using luminescence of Tb(III) -(EADHOC) probe in a solution. The linear range for determination of the selected pesticides P1(Di-chlorovos) and P2(Paraoxon-Ethyl) is1 to 7 and 1 to 10 µM. the detection limits were 1.9×10-7and 9.8×10-7 µM for P1(Di-chlorovos) and P2(Paraoxon-Ethyl) respectively. The Thermodynamic parameters and binding constant (K) of OPs with Tb(III) -(EADHOC) were evaluated. Including the value of enthalpy (∆H ) and entropy( ∆S ) changes for Probe interaction with pesticides. As the natural water sample in this study don't contain the above mentioned OPs over the limit detected by the methods, a recovery study was carried out after the addition of the adequate amount of organophosphorus pesticides.

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“…(A) An on-line coupling with solid-phase extraction is comparatively easy to achieve and has been widely used for many classes of compounds, especially pesticides [73,74,130,131]. (B) LC allows aqueous samples to be directly injected into the chromatographic system.…”

Section: Liquid Chromatography-mass Spectrometrymentioning

confidence: 99%

Analytical Methods for Polar Pollutants

Reemtsma

Quintana

2006

Organic Pollutants in the Water Cycle

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Trace-level determination of pesticide residues using on-line solid-phase extraction-column liquid chromatography with atmospheric pressure ionization mass spectrometric and tandem mass spectrometric detection

Cited by 103 publications

References 22 publications

Comparison of gas and liquid chromatography coupled to mass spectrometry for the residue analysis of pesticides in organges

Comparison of gas and liquid chromatography coupled to mass spectrometry for the residue analysis of pesticides in organges

New High Throughput Microtiter Plates for Detection of Organophosphorous Pesticides in Environmental Samples.

Analytical Methods for Polar Pollutants

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