Kindly assist about the evaluation of the concentration of the standard preparation against an independent standard preparation, prior to determine the selected sample calibration curve graph.
Please advice on best method approach to choose suitable column for HPLC to analyze targeted samples.
07 August 2018 4,765 0 View
Professional advise will be appreciated, What potential risks if my sample solvent is stronger than my mobile phase in HPLC analysis? What happen or causes and solution
07 August 2018 1,960 0 View
Kindly help with details advantages of Column chromatography over Preparative Layer Plates and disadvantages or vice versa for HPLC analysis
06 July 2018 8,745 3 View
Kindly help the recommended procedure to clean the HPLC column daily before and after used
06 July 2018 1,956 2 View
Which method of separation is more preferable, HPLC, NMR or GC for the determination of diatereoselectivity in polar or non-polar aldol products. What are the advantages or disadvantages of HPLC...
05 June 2018 7,813 9 View
I need comprehensive procedure for the determination of diastereoselectivity by H NMR in the reaction mixture?
05 June 2018 7,220 2 View
Please, I have problems with ChiralPack IB column, can anyone suggest any possible solution because having poor baseline and can't find corresponding peaks.
01 January 1970 8,634 0 View
I got comment on my FTIR data figure from a reviewer. The reviewer said "FTIR data in Figure should be repeated. there is no bassline." I made Y off set comparison graph of FTIR on OriginLab. Can...
03 August 2024 6,070 3 View
I have used Prussian blue nanoparticles as a redox couple. The PBNPs have been made using only one salt precursor. Also, during scan rate studies, a small oxidation peak can be consistently found...
31 July 2024 9,697 0 View
The entropy measured of molecular graphs plays a crucial rule. The network structures in some cases are very lengthy calculations to handle. Some author avoid to construct table where as most...
30 July 2024 3,126 0 View
Here, I have attached the UPS graph. I'm trying to calculate the DOS/DOVS from the UPS.
29 July 2024 4,971 1 View
Hi, I need to prepare a standard curve of H2O2 to evaluate the primary products of oxidation. H2O2 I have is 35%. How do I prepare a stock of H2O2 10 microlitere. If s.o has experience, I would be...
26 July 2024 3,460 2 View
The first step is to analyze a 2D molecular graph and implement partitioning techniques to calculate the topological indices. Secondly impose statically tools to generate QSPR model, may or may...
24 July 2024 9,644 1 View
The Louvain method – named after the University of Louvain where Blondel et al. developed the algorithm – finds communities by optimizing modularity locally for every node’s neighborhood, then...
23 July 2024 6,659 0 View
Let n∈ℕ, where the function f:A⊆ℝ𝑛→ℝ, 𝐴 is Borel, and (A,d) is a completely seperable space. What is the name of the functions where the graph of f in any (n+1)-dimensional box of A×ℝ is...
17 July 2024 258 1 View
When preparing a graph of fluorophore intensity vs. analyte concentration, the linearity shows an R² of 0.999. However, when plotting the same data as Fo/F vs. analyte concentration, the linearity...
13 July 2024 7,131 0 View
Hi, I was wondering if you could help. When I take CV in GC electrode with the solution of InCl3 0.01M + citric acid 0.01M + NaCl 0.1M, I get such a graph, how can I correct it so that the...
11 July 2024 5,024 1 View