Dear Amirhassan,

You need high spatial and spectral resolution for the best result. Unfourtunatelly, there have been no hyperspectral very high resolution sensor on the earth orbit. On the other hand, aerial photos which is taken using AVIRIS can help you, but it is expensive to get it. If I were you, I would try hyperion, landsat 8 and chris proba satellite sensor in a small study plot to see which one is usefull.

I hope it would be helpfull

Onur, I believe that the question is about detection of particles in the water, not from space :-).

Depending what size interests you, you could use:

- A Coulter counter, which is good down to about 1 micrometer diameter.

There are some not-recent papers by John Gregory (now retired) on this problem. He built a cheap detector that used fluctuations in light intensity to characterize these large particles in flowing water.

There are various particle counters used in the semiconductor industry to verify the quality of the water. I seem to remember that Malvern instruments sells on of these.

Hi guys

thank you very much for your help. yes Alan, I need to detect them in the water in the Lab.