Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 873-75-6, Name is (4-Bromophenyl)methanol, molecular formula is , belongs to bromides-buliding-blocks compound. In a document, author is Nik, Vahid Mortazavi, Application In Synthesis of (4-Bromophenyl)methanol.
Simultaneous extraction of chromium and cadmium from bean samples by SrFe12O19@CTAB magnetic nanoparticles and determination by ETAAS: An experimental design methodology
In the present study, dispersive micro solid-phase extraction (DMSPE) integrated with electrothermal atomic absorption spectrometry (ETAAS) as a novel method was proposed for the simultaneous analysis of cadmium and chromium in bean samples. In this method, strontium hexaferrite (SrFe12O19) modified by cetyltrimethylammonium bromide (CTAB) along with chelating agent diethyldithiocarbamate (DDTC) were used to produce SrFe12O19@CTAB nanoparticles (NPs) as a magnetic adsorbent. This adsorbent was characterized using field emission scanning electron microscope (FESEM), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), vibrating sample magnetometer (VSM), thermogravimetric analysis (TGA), and differential scanning calorimetric (DSC). Response surface methodology (RSM) based on the central composite design CCD was applied to design the experiments and study of effective factors on the extraction efficiency. The experimental parameters include pH, shaking rate, adsorbent dosage, amount of ligand, and CTAB. The detection limits for chromium and cadmium ions were 0.08 and 0.09 mu g kg(-1) under the optimal experimental conditions, with standard deviations in the range of 1.7-5% and 1.2-6%, respectively (n = 4). The linear calibration was obtained in the range of 1-150 and 1-250 mu g L-1 for chromium and cadmium ions, respectively. Also, the recovery values of all samples were found in the range of 96 to 100% and 91 to 99%.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 873-75-6, in my other articles. Application In Synthesis of (4-Bromophenyl)methanol.