Zhou, Fang-qin published the artcileOn-line separation and preconcentration of trace cadmium in environmental water samples by micro column filled with modified nanometer Si-HAP prior to FAAS determination, Recommanded Product: 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, the publication is International Journal of Environmental Analytical Chemistry (2012), 92(7), 821-831, database is CAplus.
A method of online solid phase extraction (SPE) preconcentration was established for the determination of Cd in environmental water samples by flame at. absorption spectrometry (FAAS). The method is based on the online retention of Cd on a microcolumn of nanometer silicon hydroxyapatite (Si-HAP) modified with 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (PMBP) and subsequent elution with 1.0 M thiourea and determination by FAAS. The effect of various parameters that could affect the performance of the system was investigated. The enrichment factor (EF) for Cd was 250. The limit of detection (LOD) obtained under optimum conditions was 0.28 μg/L-1 and the RSD for 7 replicates at 100 μg/L-1 Cd2+ concentration level was 1.4%. The method was applied to water samples and standard reference materials. The accuracy was assessed through recovery experiments and comparing the results with the accepted values of standard reference material.
International Journal of Environmental Analytical Chemistry published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C6H13BO3, Recommanded Product: 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics