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We developed a procedure for preparing matrix-matched calibration standards for the quantitative imaging of multiple trace elements in PbF2 crystals by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). In this facile approach, PbO powder was employed as the matrix with the addition of a series of standard solutions, followed by drying and tableting, for determining the concentrations...
A novel strategy for preparing aptamer-based organic-silica hybrid monolithic column was developed via “thiol-ene” click chemistry. Due to the large specific surface area of the hybrid matrix and the simplicity, rapidness and high efficiency of “thiol-ene” click reaction, the average coverage density of aptamer on the organic-silica hybrid monolith reached 420pmolμL−1. Human α-thrombin can be captured...
Solution cathode glow discharge-atomic emission spectrometry (SCGD-AES) was evaluated for its ability to determine toxic heavy metals, including cadmium (Cd), mercury (Hg), lead (Pb), and chromium (Cr), in environmental and biological samples. A significant enhancement in heavy metal signal was observed by addition of a small amount of cetyltrimethylammoniumchloride (CTAC, C 16 H 33 ...
We analyzed aluminum oxide (Al 2 O 3 ) by slurry introduction inductively coupled plasma (ICP) optical emission spectrometry through modeling and experimentation. We also studied the relationship between the ICP nebulizer gas flow, the spray chamber geometry, and the particle size of Al 2 O 3 in an attempt to minimize the need for correction factors by ensuring an efficient...
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