Guo, X. Q.’s team published research in RSC Advances in 4 | CAS: 4551-69-3

RSC Advances 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 C17H14N2O2, Category: pyrazoles-derivatives.

Guo, X. Q. published the artcileDual dispersive extraction combined with electrothermal vaporization inductively coupled plasma mass spectrometry for determination of trace REEs in water and sediment samples, Category: pyrazoles-derivatives, the publication is RSC Advances (2014), 4(38), 19960-19969, database is CAplus.

A simple and efficient two-step method based on dispersive solid phase extraction (D-SPE) and dispersive liquid-liquid microextraction (DLLME) was developed for the separation and preconcentration of 15 rare earth elements (REEs) from environmental water and sediment samples, followed by electrothermal vaporization-inductively coupled plasma mass spectrometry (ETV-ICP-MS) detection. With Chelex 100 as the adsorbent of D-SPE, target REEs were firstly extracted and the retained REEs were then desorbed by 0.1 mol L-1 HNO3. After 125 mmol L-1 Tris and 40 mmol L-1 1-phenyl-3-methyl-4-benzoylpyrazolone (PMBP) were added into the above elution solution, target REEs were further preconcd. into CCl4 by DLLME. The developed dual extraction technique exhibited high enrichment factors (234 to 566-fold) and good anti-interference ability. Various parameters affecting the extraction of target REEs by D-SPE and DLLME were investigated in detail. Nder the optimal conditions, the limits of detection (LODs, 3σ) for target REEs were in the range of 0.003-0.073 ng L-1 with the RSDs (CY,La,Ce,Pr,Nd,Gd,Dy = 1.0 ng L-1, CSm,Eu,Tb,Ho,Er,Tm,Yb,Lu = 0.2 ng L-1, n = 7) ranging from 6.7 to 11.5%. The proposed method of D-SPE-DLLME-ETV-ICP-MS was successfully applied to the determination of 15 REEs in water and sediment samples with the recoveries of 78-115% and 75-117% for the spiked water and sediment samples, resp. To validate the accuracy of the method, a Certified Reference Material of GBW07301a stream sediment was analyzed and the determined values were in good agreement with the certified values.

RSC Advances 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 C17H14N2O2, Category: pyrazoles-derivatives.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics