Recent content by Baho Ilok

I need to measure trichloroethylene (TCE) in water samples using headspace gas chromatography. Obviously, I will need a set of standard solutions to make a standard curve for concentration vs area. How exactly do you prepare the standard solutions? What I don't understand is that, say I prepare...

If diffraction angle 2θ represents Miller indices, what does intensity represent particularly in the context of quantitative XRD?

Is there a database that can help answer this question? Any references? Thank you!

We have in our lab a continuous anammox bioreactor, however, it is not well mixed, i.e. all the biomass is concentrated at the bottom of the reactor. We're interested in quantifying the biomass yield. Does anybody know of any techniques to measure this in a continuous non-homogeneous bioreactor...

What are the methods for quantifying the amount of colloidal particles in sol mixtures?

Interesting, this is the first time that I've heard of these methods. I will explore these ideas more. Thank you!

I want to minimize contamination as much as possible so I want to avoid adding chemicals, that's why I emphasized physical methods. Anyway, thank you for the suggestion!

I understand that colloids (at least those less than 0.7 um in diameter) are not filterable using conventional filters. But are there other physical separation methods that can separate them from solution, apart from using membranes? Centrifugation perhaps? I just want some confirmation. Thank you!

I think I get it now. Thank you so much for your patience!

Okay. We have 6 target surface water sites. We measured several water quality parameters at different months and the relative abundances of an emerging contaminant (X) to try and understand how water quality can affect its proliferation. So our tabulation of the data, one column is the site...

Oh I'm sorry, I don't understand quite well the definitions. In my current understanding, a variable is anything that can vary, controllable or not. So if in an experiment, the objective is to measure responses of different organisms to being exposed to a certain compound, the organisms (which I...

Ah I think I get it now. So if I understand correctly, objects can be considered a variable if the experiment is done to find relationships between variables?

Thank you for being more understanding. It's embarrassing to admit but I do identify as one of the scientific people, however I am still new. I have much to learn and I really appreciate your constructive responses.

I don't doubt any of the things you have said so far, mainly because I assume you are an experienced researcher possibly with years of experience and what you have said made complete sense. However, what I'm getting at here is that it would have been more helpful for you to have just...

The question I asked may be meaningless to you since obviously you know quite well the answer, but to us that don't it can make complete sense. Asking what lies beyond the edge of the Earth may make absolutely no sense today but thousands of years ago it could have been a million dollar question.