@article {JING2020120378,
	title = {Sorbent and solvent co-enhanced direct analysis in real time-mass spectrometry for high-throughput determination of trace pollutants in water},
	journal = {Talanta},
	volume = {208},
	year = {2020},
	pages = {120378},
	abstract = {<p>A sorbent and solvent co-enhanced direct analysis in real-time mass spectrometry (SSE-DART-MS) method was developed for high-throughput determination of trace pollutants in water. The use of sorbent for preconcentration and solvents for assisting desorption and ionization synergistically enhanced the signals from the trace pollutants detected by DART-MS. Phthalic acid esters (PAEs) were used as model analytes to validate the SSE-DART-MS method. Graphitic carbon nitride (g\&ndash;C3N4)\&ndash;based materials with two morphologies and six organic solvents were used to systematically evaluate the enhancement effect by the sorbent and solvent. A better analytical performance was achieved with the two-dimensional (2D) g-C3N4, compared to three-dimensional (3D) g-C3N4/C, indicating that the morphologies of sorbents played a key role in SSE-DART-MS analysis. The MS signals of all the analytes were increased by 10\&ndash;100 times for the two materials in the presence of the selected solvents. With the SSE-DART-MS method, concentration limits of detection for water samples in the range 0.07\&ndash;0.94 ng L\&minus;1, and recovery in the range 82.8\&ndash;119\% using g-C3N4, were obtained for the PAEs. This work not only provides a reliable method for the coupling of solid phase extraction technique with DART-MS, but also presents valuable information for conducting other DART-MS analyses.</p>},
	keywords = {desorption, direct analysis in real time mass spectrometry, Graphitic carbon nitride, IONIZATION, Phthalic acid esters, Solid phase extraction},
	issn = {0039-9140},
	doi = {https://doi.org/10.1016/j.talanta.2019.120378},
	url = {http://www.sciencedirect.com/science/article/pii/S0039914019310112},
	author = {Wenqiang Jing and Yanying Zhou and Jiaqin Wang and Yuanfeng Zhu and Youqi Lv and Wentao Bi and Chen, David D. Y.}
}
@article {3139,
	title = {EVALUATION OF MATRIX-ASSISTED LASER DESORPTION/IONIZATION TIME-OF-FLIGHT MASS-SPECTROMETRY FOR THE ANALYSIS OF ORGANOARSENIC COMPOUNDS OF ENVIRONMENTAL INTEREST},
	journal = {Biological Mass Spectrometry},
	volume = {23},
	number = {12},
	year = {1994},
	note = {ISI Document Delivery No.: PX594Times Cited: 9Cited Reference Count: 45},
	month = {Dec},
	pages = {749-755},
	type = {Article},
	abstract = {Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) was investigated for arsenic speciation of compounds of environmental interest. It is a very sensitive mass spectrometric technique which can detect as little as 0.3 ng of arsenic or 4 pmol of the arsenical under investigation. This feature suggests that the method could be used for the identification of minor arsenic components in environmental samples, Additional advantages of the technique are its capability of providing molecular ions as well as fragment ions for a variety of arsenicals, and allowing for a certain degree of control in compound fragmentation, by adjusting the N-2 laser power. Quantitative analysis by MALDI-TOF-MS is still considered a highly unreliable procedure since many variables associated with sample preparation and analytical procedure can seriously affect the results.},
	keywords = {arsenic, arsenobetaine, ARSENOCHOLINE, COMPOUNDS, CONFIRMATION, desorption, FAST ATOM BOMBARDMENT, IDENTIFICATION, OLIGOSACCHARIDES, PERFORMANCE LIQUID-CHROMATOGRAPHY, SPECIATION},
	isbn = {1052-9306},
	url = {<Go to ISI>://A1994PX59400005},
	author = {Pergantis, S. A. and Cullen, W. R. and Eigendorf, G. K.}
}
@article {3187,
	title = {TENSER LEED ANALYSIS OF THE PD(100)-(ROOT-5X-ROOT-5)R27-DEGREES-O SURFACE-STRUCTURE},
	journal = {Surface Science},
	volume = {318},
	number = {1-2},
	year = {1994},
	note = {ISI Document Delivery No.: PL286Times Cited: 29Cited Reference Count: 29},
	month = {Oct},
	pages = {129-138},
	type = {Article},
	abstract = {A tenser LEED analysis of the Pd(100)-(root 5 x root 5)R27 degrees-O surface structure supports a surface oxide model, as first postulated by Orent and Bader. The detailed model which gives the best correspondence with experimental intensity data has a PdO(001) overlayer stacked on to the Pd(100) surface such that rumpling is induced in both the oxide and topmost Pd(100) layers. The structure can be seen as representing a compromise between the drive toward an ideally flat PdO(001) surface and the need to optimize total bonding at the surface. Pd atoms in the topmost Pd(100) layer appear to displace laterally to minimize corrugations in the top metal layers. The total corrugations in the PdO overlayer and the first Pd(100) layer are indicated to be about 0.26 and 0.51 Angstrom, respectively. The average O-Pd bond length for two-coordinate O on the Pd surface (1.73 Angstrom) remains dose to the predicted value of 1.76 Angstrom based on the structure of bulk PdO.},
	keywords = {ADSORPTION, desorption, ENERGY-ELECTRON-DIFFRACTION, HYDROGEN, OXYGEN, PD(100) SURFACE, PHASE, RECONSTRUCTION},
	isbn = {0039-6028},
	url = {<Go to ISI>://A1994PL28600019},
	author = {Vu, D. T. and Mitchell, K. A. R. and Warren, O. L. and Thiel, P. A.}
}
@article {2811,
	title = {LASER ABLATION ION-TRAP MASS-SPECTROMETRY - ATOMIC AND MOLECULAR MASS-SPECTROMETRY OF METAL, CERAMIC AND POLYMER SAMPLES},
	journal = {Journal of Analytical Atomic Spectrometry},
	volume = {8},
	number = {2},
	year = {1993},
	note = {ISI Document Delivery No.: LB836Times Cited: 20Cited Reference Count: 19},
	month = {Mar},
	pages = {261-267},
	type = {Article},
	abstract = {A quadrupole ion trap was used to characterize metallic, ceramic and polymeric materials by using laser ablation directly inside the storage volume as a sampling and ionization method. A differentially pumped sample probe was utilized to facilitate sample changes and ion trap electrodes with extended hyperbolic surfaces were used to provide more uniform ion storage fields. The effects of sample surface preparation and laser fluence were investigated for stainless-steel samples.},
	keywords = {ATOMIC MASS SPECTROMETRY, CERAMIC AND POLYMERIC SAMPLES, desorption, ION TRAP, laser ablation, METALLIC, MOLECULAR MASS SPECTROMETRY, SPECTROSCOPY},
	isbn = {0267-9477},
	url = {<Go to ISI>://A1993LB83600011},
	author = {Gill, C. G. and Blades, M. W.}
}
