HPLC and vanadium - FAQS.TIPS

06 June 2016 0 10K Report

Hello,

I am looking for an expert who has used HPLC(UV-Vis) for vanadium identification or/and speciation. I have specific questions and concerns and am hoping to get into discussion with an expert.

Regards,

Iman

Badges
Science method

More Iman Boukhobza's questions See All

Dynamic processes within vanadium complexes?

Any input on whether or not spectrophotometry or HPLC could be used to investigate dynamic processes within vanadium complexes in aqueous solutions? Thanks

06 July 2018 5,888 39 View

Identifying Vanadium in soil samples using HPLC ?

Hello, I want to ask please about a soil sample preparation for HPLC. I have tried digestion, but running samples using HPLC did not give me some good chromatograms. I believe that I need to use...

04 May 2016 3,387 5 View

C18 HPLC column washing?

Hello, I am working on a project that uses HPLC to investigate the presence and speciation of vanadium in environmental samples. I have used vanadium standard and pre-treated my samples before...

31 December 2015 8,630 8 View

Seawater reference material?

I wanted please to ask if somebody here has used seawater reference material for trace metal characterization and speciation purposes

11 December 2015 6,031 2 View

Any suggestions for a CRM of a beach sandy soil?

I wanted to ask please if some body here has used a CRM of a beach sandy soil sample?I am interested in vanadium contamination within a sandy beach in Dubai. I have tried to look in few CRM...

11 December 2015 4,195 13 View

Any advice on HPLC retention times?

Hi, I am new in the field of practical usage of the HPLC technique, I am working on a project that deals with characterizing vanadium within seawater samples. I have started using the technique...

10 November 2015 452 6 View

Which type of compound does lamda max of 218 indicate in a uv-vis spectrum of a partially purified compound through column and TLC?

A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...

11 August 2024 9,801 2 View

Can you connect an HPLC to a Mass Spec only at a certain time point?

Can anyone explain this method? Especially the last statement where it says only at 1.5 to 2.5mins was the MS/MS connected to the UPLC. How is that possible, is it a feature in this specific...

11 August 2024 8,141 3 View

Baseline drift in HPLC? What causes this?

Hello, Why do i see this baseline drift when i compare my blank (black) to the sample (blue)? Any suggestions as to why this happened? Thank you!

11 August 2024 3,770 4 View

Is this a facetotecta nauplius?

This larva was captured using a plankton net in the Persian Gulf during the summer. I believe it may be a Facetotecta nauplius.

08 August 2024 3,746 4 View

GC-MS retention index prediticon?

Hello experts, Does anyone know any free software about retention index prediction ?

08 August 2024 7,403 2 View

Can I use a HisTRAP column for affinity chromatography?

I'm working on selecting antibodies against a recombinant protein that has a His-tag. My idea is to first bind the recombinant protein to a HisTRAP column and then use this column for an affinity...

07 August 2024 505 3 View

Separation of organic acids-HPLC?

Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.

07 August 2024 8,782 3 View

Why is electronic energy 0.000 for liquid crystal compounds and is invariable with temperature in Guassian 09 software?

Are there any suggestions or insights you can provide to help address this problem

06 August 2024 1,443 2 View

RNA later for the preservation of RNA in fecal samples at room temperature for one day (37°C)?

I am planning to collect human fecal samples for metatranscriptomic analysis using MGI. These samples are from indigenous people living in a region with high temperatures. I will have access to a...

06 August 2024 1,367 3 View

Why might the impedance values for DI water and 0.1X PBS buffer solution exhibit a decreasing and increasing trend, respectively over time (HP 4194A)?

Hello everyone, I'm encountering an issue with my electrochemical impedance spectroscopy (EIS) measurements and would appreciate some insights. Experimental Setup: Electrodes: Gold interdigitated...

05 August 2024 3,783 2 View