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Effects of low-molecular-weight organic acids (LMWOAs) and residence time on desorption of Cu, Cd, and Pb from two typical Chinese soils were studied. Citric, malic, and acetic acids were chosen as representatives of LMWOAs commonly present in soils. CaCl(2) and NaNO(3) were used in desorption as they were main soil background electrolytes for comparison.(More)
A post-chemiluminescence (PCL) phenomenon was observed when palmatine was injected in a mixture of N-bromosuccinimide (NBS) and alkaline dichlorofluorescein (DCF) after the chemiluminescence (CL) reaction of NBS-alkaline DCF had finished. Based on the PCL reaction, a rapid and sensitive method for the determination of palmatine was established. Under(More)
OBJECTIVE This work aimed to develop an alternative sustained-release thermosensitive praziquantel-loaded nanoemulsion (PZQ-NE) hydrogel for better schistosomiasis treatment. SIGNIFICANCE PZQ-NE-dispersed chitosan/glycerol 2-phosphate disodium/HPMC (NE/CS/β-GP/HMPC) hydrogel was successfully prepared to improve bioavailability of PZQ. METHODS Solubility(More)
We report on a simple and sensitive chemiluminescence (CL) method to determine nitrazepam. This method is based on the fact that rhodamine 6G (Rh6G) enhanced the weak CL emission of the reaction of hexacyanoferrate with nitrazepam, and that it was further enhanced by silver nanoparticles (AgNPs). The effects of the concentrations of K3Fe(CN)6, Rh6G, AgNPs(More)
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