Simultaneous enantiomeric analysis of eight pesticides in soils and river sediments by chiral liquid chromatography-tandem mass spectrometry

Zhao, Pengfei; Zhao, Jing; Lei, Shuo; Guo, Xingjie; Zhao, Longshan

doi:10.1016/j.chemosphere.2018.03.204

Cited by 60 publications

(7 citation statements)

References 41 publications

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“…For identification purposes, a common method for analytical separation is arranging a tandem instrument, such as reported by Zhao et al in the separation of pesticide mixture from a soil sample [ 79 ]. Chiral liquid chromatography–tandem mass spectrometry was able to analyze the enantiomeric composition of the eight chiral pesticides in solid environmental matrices after a series of sample preparations, as shown in Figure 5 .…”

Section: Development Of Stationary Phases For Small Chiral Compoundsmentioning

confidence: 99%

Recent Developments of Liquid Chromatography Stationary Phases for Compound Separation: From Proteins to Small Organic Compounds

2022

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Compound separation plays a key role in producing and analyzing chemical compounds. Various methods are offered to obtain high-quality separation results. Liquid chromatography is one of the most common tools used in compound separation across length scales, from larger biomacromolecules to smaller organic compounds. Liquid chromatography also allows ease of modification, the ability to combine compatible mobile and stationary phases, the ability to conduct qualitative and quantitative analyses, and the ability to concentrate samples. Notably, the main feature of a liquid chromatography setup is the stationary phase. The stationary phase directly interacts with the samples via various basic mode of interactions based on affinity, size, and electrostatic interactions. Different interactions between compounds and the stationary phase will eventually result in compound separation. Recent years have witnessed the development of stationary phases to increase binding selectivity, tunability, and reusability. To demonstrate the use of liquid chromatography across length scales of target molecules, this review discusses the recent development of stationary phases for separating macromolecule proteins and small organic compounds, such as small chiral molecules and polycyclic aromatic hydrocarbons (PAHs).

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Section: Development Of Stationary Phases For Small Chiral Compoundsmentioning

confidence: 99%

Recent Developments of Liquid Chromatography Stationary Phases for Compound Separation: From Proteins to Small Organic Compounds

2022

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“…Paclobutrazol has half-life (43–618 days) and persist in the nature for long duration due to absorption/adsorption in the soil particles [ 5 – 8 ]. In the soil, it has a residue level of 1.1–150 mg kg -1 [ 9 , 10 ], and has a major effect on soil microbiome [ 7 , 11 , 12 ] and further grown crops [ 7 , 11 ]. Despite the massive volumes of PBZ used in crops and the possibility of PBZ-like chemicals contaminating groundwater [ 13 – 15 ], its destination and toxicity remain unknown [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Exploration of Klebsiella pneumoniae M6 for paclobutrazol degradation, plant growth attributes, and biocontrol action under subtropical ecosystem

et al. 2021

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In recent times, injudicious use of paclobutrazol (PBZ) in mango orchards deteriorates the soil quality and fertility by persistence nature and causes a serious ecosystem imbalance. In this study, a new Klebsiella pneumoniae strain M6 (MW228061) was isolated from mango rhizosphere and characterized as a potent plant growth promoter, biocontrol, and PBZ degrading agent. The strain M6 efficiently utilizes PBZ as carbon, energy and nitrogen source and degrades up to 98.28% (50 mgL-1 initial conc.) of PBZ at 15th day of incubation in MS medium. In the soil system first order degradation kinetics and linear model suggested 4.5 days was the theoretical half-life (t1/2 value) of PBZ with strain M6. Box Behnken design (BBD) model of Response surface methodology (RSM) showed pH 7.0, 31°C temperature, and 2.0 ml inoculum size (8 x 109 CFU mL-1) was optimized condition for maximum PBZ degradation with strain M6. Plant growth promoting attributes such as Zn, K, PO4 solubilization IAA, HCN and NH3 production of strain M6 showed positive results and were assessed quantitatively. The relation between plant growth promotion and PBZ degradation was analyzed by heat map, principal component analysis (PCA) and, clustal correlation analysis (CCA). Strain M6 was also showing a significant biocontrol activity against pathogenic fungi such as Fusarium oxysporum (MTCC–284), Colletotrichum gloeosporioides (MTCC– 2190), Pythium aphanidermatum (MTCC– 1024), Tropical race 1 (TR -1), and Tropical race 4 (TR -4). Hence, results of the study suggested that strain M6 can be utilized as an effective bio-agent to restore degraded land affected by persistent use of paclobutrazol.

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“…To date, most methods employed for the determination of chiral pesticides are based on liquid chromatography, either under normal or reversed-phase conditions [ 1 , 17 ]. Some limitations of chiral LC-based methods are either the use of isocratic conditions, often optimized for the separation of the enantiomers of single compound [ 15 , 18 , 19 ], or, in case of multianalyte procedures, the employment of slow gradients leading to analysis times above 60 minutes [20] . Since some years ago, pharmaceutical laboratories have upgraded their chiral separation methods from LC to supercritical fluid chromatography (SFC).…”

Section: Introductionmentioning

confidence: 99%

Supercritical fluid chromatography-mass spectrometric determination of chiral fungicides in viticulture-related samples

Pérez-Mayán

Ramil

Cela

et al. 2021

Journal of Chromatography A

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Simultaneous enantiomeric analysis of eight pesticides in soils and river sediments by chiral liquid chromatography-tandem mass spectrometry

Cited by 60 publications

References 41 publications

Recent Developments of Liquid Chromatography Stationary Phases for Compound Separation: From Proteins to Small Organic Compounds

Recent Developments of Liquid Chromatography Stationary Phases for Compound Separation: From Proteins to Small Organic Compounds

Exploration of Klebsiella pneumoniae M6 for paclobutrazol degradation, plant growth attributes, and biocontrol action under subtropical ecosystem

Supercritical fluid chromatography-mass spectrometric determination of chiral fungicides in viticulture-related samples

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