Cadmium is determined in environmental samples by AAS, ICP-MS,ICP-AES and by spectrophotometric method. Often, the choice of the method depends on the expected concentration in the sample. Generaly, ICP-MS and GF-AAS works in the ppb range, where as F-AAS and spectrophotometric methods works in ppm levels. Since you asked a simple method I would suggest you to try the spectrophotometric method using dithizone as a colouring agent. You must be very careful about the procedure as many metal ions would form complex with this reagent. Consult the American public health association (APHA) book on "Standard methods for the examination of water and waste water. Best Wishes.

Try for GF-AAS (Graphite furnace- Atomic Absorption Spectrophotometry) if you wish to have Cd in ppb levels in your water samples. Best wishes!

AAS, ICP are among the methods dear Blessy

I dont know any titrimetry method, but you can easily use AAS (GTA) to determine Cd in soil samples

thanks everyone... If anyone has any titrimetry method or any other method using UV (to determine Cd) then pls do post it...

We did some simple method for Hg, but not experience in Cd, sorry

Dithizone method. HACH sells this as a kit but you can look up the non-HACH-kit direct chemical method in a copy of "Standard Methods for Water and Wastewater". Don't remember the detection limit but it will definitely be higher than AA but not sure whether it's higher than ICP. Good luck!

I think in then days of technology one should go for advanced instruments. I am aware that one cannot afford the cost of the analysis but a collaborations with the lab where the instrument is available can be of help. go for it. Time will be saved and accuracy will be trusted. Baride

as Mr. Farrukh mentioned, HACH helps as you are looking for UV method

I think EDTA titration should be possible....but it depends on which other cations are present in your solution

For Cd , volumetric method is just quantitative but when  need to quantify as desired, it is necessary to go for quantitative analysis and  for this AAS or ICP MS  are the best tool.

thank u sir :)