Fabrice Kapiamba

6 Questions 3 Answers 0 Followers

Questions related from Fabrice Kapiamba

What strategies does one employ to reduce background noise on ICP-MS?

I am analyzing trace metals in samples (in 3% HNO3) using the ICP-MS (NexION 350). However, some metals that are difficult to reduce background noise include zinc, Iron, and Aluminum. What should...

24 February 2022 2,055 3 View

ICP-MS or ICP-OES?

Have samples whose metal concentrations are expected to be between 10 ppb and 500 ppb. That is nearly at the borderline of ppbs and ppms. I have two options, either I dilute samples and use ICP-MS...

09 August 2021 589 4 View

How to convert aerosols number concentration from counts/liter to dN/dlogDp (1/cm3)?

I am trying to compare the performance of several aerosols measurement techniques including the optical particles counter principles and photometer. The GRIMM records concentration in counts/liter...

28 June 2021 1,300 1 View

How to distinguish Cr23C6 carbide precipitate from a NbC carbide precipitate in a steel sample and determine their crystal structure and composition?

I am analyzing metal alloys

30 November 2020 5,341 3 View

What indication can one get from TGA of a carbon supported metal catalyst?

I have passivated my catalyst to prevent oxidation; now before promotter addition, I would like to know the temperature to re-reduce the catalyst. That can be presicted by TPR. For the latter, the...

08 September 2019 6,820 3 View

How long does it take to deposit cerium oxide on a copper catalyst by SEA method?

I am synthesizing a silica-supported copper catalyst, after reduction, I would like to dope cerium islands. so I would like to know the stirring time required to insure complete adsorption (how to...

01 August 2019 5,510 5 View