What is the best method to quantify Silicon concentration in brine?

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Sergey Mamedov

ICP-OES is very sensitive but may be too complicated. You may try XRF. Sensitivity may be low ppm depending on spot size.

Huachun Sheng

You may try ICP-MS.

XRF does not require sample prep and it takes 50-100 s to detect elements if we are not talking about low ppm level.

Hisham A. Nasr-El-Din

use ICP

Mohamed Salah Mohamed