Han Wang

5 Questions 2 Answers 0 Followers

Questions related from Han Wang

How can we perform organic synthesis in a efficient way in glove box, when many synthesis steps are required?

Dear colleagues, I am planning to use glovebox for synthesis with air sensitive reagents, which include solid and liquid. Do you have tips/handbook/reference for long hour work? Thank you for your...

14 March 2023 8,878 2 View

Does the slope of the shoulder in UV diffuse reflectance spectroscopy can reflect the amount of metal?

Dear friends, I have performed UV-DRS on two samples. Both of them have shoulder below 210nm (accordiing to literature it's tetrahedral Sn) but they have different slope. Can I claim that the one...

11 July 2021 8,279 0 View

What kind of technique I can utilize to characterize C-O-Sn bond?

Hi, recently I synthesize a material containing C-O-Sn bond (For specification, Sn is connected to butyl group). I wonder if there is any technique to characterize this bond? Thank you in advance!

27 June 2021 4,163 3 View

Is RID-20A(Refractive index detector) from shimadzu suitable for stepwise elution in HPLC?

I apply mobile phase stepwise elution in HPLC to separate glucose isomerization to desired fructose. However, I got unreasonable result showing reaction selectivity of fructose is larger than 1. I...

29 August 2020 3,354 3 View

Why reaction selectivity of glucose isomerization larger than 1 based on HPLC separation?

I perform glucose isomerization to fructose and separate the two components in hplc ROA organic acid column. I prepared calibration curves for fructose and glucose using signal of refractive index...

27 August 2020 476 2 View