Iron analysis in water
Thread Content
What methods are available to determine the exact value of iron concentration in water at levels below 10 ug/L?
This post was last edited by qugd on 2017-3-31 09:35. This concentration is at the ppb level; generally, colorimetric methods have reached their limits in this case. Atomic spectroscopy might be suitable, but it’s not feasible for online analysis, and ICP-MS is even less suitable. For online detection, online ion chromatography might be an option, but the cost would be very high. Conventional colorimetric methods may not have high precision, and the sensitivity of o-phenanthroline seems to have reached its limit as well. Macromolecules or ternary color development methods can be employed, and the colored components are subjected to colorimetry by extraction into an organic phase (which is equivalent to concentration).
The water sample can be concentrated, and then determined using spectrophotometry