Is it normal to produce sediments in alkaline citrate solution in phenate method in order to determine ammonia?

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Hashim H. Kareem Aldhahi

Dear Sir.

Please check the concentration of iron (Fe) in your reaction media because I expect this is sedemintation of colloidal iron oxides..

Regards

Mahdi Ghorbanian

@ Hashim Haneen K. Aldhahi

Thanks for your attention

But I used deionized water to prepare alkaline citrate solution. So it is not expectable to find large concentration of iron in it.