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Live HeLa cells preconcentrate and differentiate inorganic arsenic species.
Live HeLa cells immobilized on Sephadex G-50 beads were used as a medium for the preconcentration and speciation of inorganic arsenic. The sorption of…
Authors: Xu-Wei Chen, Ai-Mei Zou, Ming-Li Chen, Jian-Hua Wang, Purnendu K Dasgupta
Source: Analytical chemistry. 2009 Feb 1
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Direct extraction of double-stranded DNA into ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate and its quantification.
Ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate (BmimPF6), as a green solvent, was successfully used for the direct extraction of dsDNA. …
Authors: Jian-Hua Wang, De-Hong Cheng, Xu-Wei Chen, Zhuo Du, Zhao-Lun Fang
Source: Analytical chemistry. 2007 Jan 15
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A microfluidic flow injection system for DNA assay with fluids driven by an on-chip integrated pump based on capillary and evaporation effects.
A miniaturized flow injection analysis (FIA) system integrating a micropump on a microfluidic chip based on capillary and evaporation effects was deve…
Authors: Zhang-Run Xu, Chong-Hui Zhong, Yan-Xia Guan, Xu-Wei Chen, Jian-Hua Wang, Zhao-Lun Fang
Source: Lab on a chip. 2008 Oct
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Ionic liquid-polyvinyl chloride ionomer for highly selective isolation of basic proteins.
Hydrophilic ionic liquid-polyvinyl chloride (PVC) hybrids were prepared by immobilizing N-methylimidazole (N-mim) to PVC chains in toluene. The NmimCl…
Authors: Yang Shu, Xu-Wei Chen, Jian-Hua Wang
Source: Talanta. 2010 Apr 15
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Silk fibroin as a sorbent for on-line extraction and preconcentration of copper with detection by electrothermal atomic absorption spectrometry.
Silk fibroin is a kind of polypeptide with functional amino acids in its structure. The electric charges in its molecular chains originating from the …
Authors: Xu-Wei Chen, Lin-Lin Huang, Rong-Huan He
Source: Talanta. 2009 Apr 15
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The miniaturization of bioanalytical assays and sample pretreatments by exploiting meso-fluidic lab-on-valve configurations: a review.
Termed as the third generation of flow injection analysis, the lab-on-valve (LOV) system is closely related to the principle of sequential injection a…
Authors: Xu-Wei Chen, Jian-Hua Wang
Source: Analytica chimica acta. 2007 Oct 29
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Cell-sorption of paramagnetic metal ions on a cell-immobilized micro-column in the presence of an external magnetic field.
The cell-sorption of paramagnetic ions of Mn2+ and Cr3+ onto a Chlorella vulgaris (C. vulgaris) cell-immobilized micro-column was significantly improv…
Authors: Ai-Mei Zou, Ming-Li Chen, Xu-Wei Chen, Jian-Hua Wang
Source: Analytica chimica acta. 2007 Aug 13
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Selective extraction/isolation of hemoglobin with ionic liquid 1-butyl-3-trimethylsilylimidazolium hexafluorophosphate (BtmsimPF6).
Ionic liquid was for the first time employed for selective isolation of heme-protein species. Direct extraction of hemoglobin into ionic liquid withou…
Authors: De-Hong Cheng, Xu-Wei Chen, Yang Shu, Jian-Hua Wang
Source: Talanta. 2008 Jun 15
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A sequential injection fluorometric procedure for the determination of procaine in human blood and pharmaceuticals.
An automated procedure for the assay of procaine hydrochloride in human blood and pharmaceuticals was developed using a sequential injection (SI) tech…
Authors: Xu-Wei Chen, Xin Song, Jian-Hua Wang
Source: Analytical and bioanalytical chemistry. 2006 Jun
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DNA purification on a lab-on-valve system incorporating a renewable microcolumn with in situ monitoring by laser-induced fluorescence.
Bead injection in a lab-on-valve (LOV) system was adopted for DNA purification via micro solid-phase extraction (SPE) with a renewable silica microcol…
Authors: Xu-Wei Chen, Zhang-Run Xu, Bai-Yan Qu, Ye-Feng Wu, Jing Zhou, Hui-Dan Zhang, Jin Fang, Jian-Hua Wang
Source: Analytical and bioanalytical chemistry. 2007 May
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