Enrichment separation and determinations of cadmium(II) and lead(II) 1 phenyl 1h tetrazole 5 thiol chelates on diaion SP 207 by solid phase extraction flame atomic absorption spectrometry

... phase extraction of cadmium(II) and lead(II) as their 1- phenyl- 1Htetrazole -5- thiol on Diaion SP- 207 resin 7 21 HNO3 and water, sequentially 0.3% (m/V) solution of 1phenyl- 1H- tetrazole- 5- thiol ... recoveries of cadmium(II) and lead(II)- 1- phenyl- 1H- tetrazole- 5- thiol chelates on Diaion SP2 07 resin at the pH range of 3.0–8.0...

Ngày tải lên: 02/09/2015, 13:45

... Liquid-liquid extraction LOD Limit of detection LOQ Limit of quantification muSPE Micro solid phase extraction using mixed matrix membrane μ-SPE Membrane bag micro solid phase extraction MPME Membrane protected ... Membrane- assisted micro- solid phase extraction (μ-SPE) is a recently introduced sample preparation technique that integrates microextraction...

Ngày tải lên: 10/09/2015, 09:12

... Application of the silica monolith as solid phase extraction cartridge for the extraction of epinephrine, metanephrine and normetanephrine from urine  Application of the silica monolith as solid ... monolith as solid phase extraction cartridge for the extraction of ketamine from urine  Application of the silica monolith as solid...

Ngày tải lên: 10/09/2015, 15:50

... CHARACTERIZATION OF CARBON IN SILICON 38 3.1 38 Carbon in silicon 3.1.1 Epitaxy Incorporation of carbon 3.1.2 Maximizing substitutional carbon incorporation 3.2 Quantification of the carbon content ... suppression of boron diffusion [19-21] and elimination of implantation EOR defects [22, 23] in the presence of carbon The combined effects of dopant diff...

Ngày tải lên: 12/09/2015, 09:28

... composition of 2H and 18O The compositions of the isotopes 2H (D) and 18O were analyzed to obtain δD (‰) and δ18O (‰), respectively, which are defined as the relative deviation of the parts per thousand ... amount-weighed mean δD of the precipitation samples (-28.1 ‰), and C2 was set to the δD of the river water just before the precipitation event (-47.9 ‰) For the main pa...

Ngày tải lên: 05/09/2013, 09:08

... in the HD -caveolae and LD -caveolae; (c) the VHD -caveolae contained almost a third of the plasma membrane caveolin, and the majority of cellular caveolin is found in the plasma membrane of adipocytes; ... referring to all of them as caveolae, was demonstrated by their content of both caveolin-1 and caveolin-2 The coexistence of caveolin-1 and...

Ngày tải lên: 16/03/2014, 13:20

... shows a comparison between the PAH+ and PAH0 contributions of the database fit (top), and the PAH+ and PAH0 contributions in the BSS decomposition (bottom) The results of the database fits highlight ... distribution, and Signal the distribution of VSGs Although the spatial distributions of Signal 1, Signal 2, and Signal correlate well with PAH0...

Ngày tải lên: 16/03/2014, 16:20

... [12] K G Oweiss and D J Anderson, “A new technique for blind source separation using subband subspace analysis in correlated multichannel signal environments,” in Proceedings of IEEE International ... Advances in Signal Processing The objective of this paper is to develop a new technique for separating and potentially classifying a number of correlated sourc...

Ngày tải lên: 22/06/2014, 23:20

... between the sensors and the sources is Figure 1: Some examples for P3b (1 and 2) and P3a (3 and 4) signals and their corresponding typical locations separating P300 sources and its subcomponents must ... maximising the spikiness of the output sources around the time of interest (300 milliseconds), estimating the pdf of the P300 sources and forcing the pdfs...

Ngày tải lên: 22/06/2014, 23:20

... count the number of peaks in each slice (3) Evaluate the histogram of the obtained set of peaks numbers (4) Estimate the total number of the signal components as the argument of the maximum of the ... step of the iterative algorithm For this reason, at the end of the second phase, we end up with a number of components which is higher than the ac...

Ngày tải lên: 23/06/2014, 01:20

... 1039–1044 of the lack of separation of mixtures of pigments However, the fractions that contained a mixture of the pigments were concentrated and rechromatographed 3.3 Purity of curcuminoid pigments The ... yield of 92% pure curcumin was obtained with no BDMC detected Further purification of the crystals was possible by CC 3.2.2 CC separation of pigments from...

Ngày tải lên: 01/07/2014, 13:23

... SEPARATION AND COLLECTIVE PHENOMENA OF COLLOIDAL PARTICLES IN BROWNIAN RATCHETS ANDREJ GRIMM (Diplom Physiker, University of Konstanz) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY ... vector-chromatography and validate the predictions of ratchet theory In chapter 5, we investigate the effect of hydrodynamic interactions on the dynamics of collo...

Ngày tải lên: 10/09/2015, 15:51

... Chapter Synthesis of positively charged single- isomer cyclodextrins 33 Approached for cyclodextrins 33 2 Synthesis of single- isomer positively charged cyclodextrins 37 2 Synthesis ... ability of β-CDNH2 11 0 Effect of pH and CD concentration on EOF 11 1 Effect of pH on migration times 11 2 3 Effect of pH on enantioseparation of acid analytes ……...

Ngày tải lên: 16/09/2015, 08:30