Noor Ul Ain , Generally atomic adsorption spectroscopy will be better. You have better selectivity and lower quantification limit.

Atomic absorption is better.

Atomic adsorption spectroscopy

If you need more sensitivity and have just AAS (not ICP) you might investigate a graphite furnace option, especially with Zeeman.

I agree with the others. AA (or ICP) will be more accurate and specific for chromium than UV, VIS or IR.

AA or ICP

Miss Noor Al-Ain

Atomic absorption is the best choice. UV is a technique for molecules and not for atoms. If you need more detailed procedure you need to send me the steps you did to prepare your unknown solution. Good luck

Thank you so much everyone for your guidance

AAS has higher sensitivity and can detect chromium (III) at very low concentrations that UV vis spectrophotometry.However, the analytical instrument with the highest sensitivity for chromium (III) ions is inductively coupled plasma mass spectrometry (ICP-MS). ICP-MS can detect chromium (III) at very low concentrations (ppt level), while AAS and UV vis spectrophotometry require a preconcentration step or a complexation reaction to enhance the signal.

1. ICP-MS: highest sensitivity, can detect chromium at ppt level

2. AAS: medium sensitivity, can detect chromium at ppb level

3. UV vis spectrophotometry: lowest sensitivity, can detect chromium at ppm level

Atomic absorption spectrometer (AAS) is better as it is fast and gives more reliable and accurate reading.

Atomic Absorption is the best choice

Atomic Absorption spectrometer is the better

Atomic absorption technique is the best and simple, but inductively coupled plasma technique is more sensitive than other techniques

AAS is the best

Noor Ul Ain AAS is widely used to measure metal concentration because it offers good sensitivity and selectivity for many metals. @

The choice of technique to quantify metal concentrations depends on several factors, including the type of metal, the concentration range, the sample matrix, and the required accuracy and sensitivity. Different analytical techniques have their strengths and limitations. Here are some common techniques used to quantify metal concentrations:

The best technique for quantifying metal concentrations depends on the specific requirements of the analysis, including the elements of interest, concentration levels, sample type, available resources, and desired level of accuracy. In some cases, a combination of techniques may be used to cross-validate results and ensure accuracy and reliability. It's important to carefully select and validate the chosen technique to obtain meaningful and precise metal concentration data.