Microdetermination of nitrates and nitramines-I Titrimetric methods based on the reduction with iron(II), titanium(III), and a mixture of both.
Organic and inorganic nitrates are satisfactorily determined on the microscale by reduction with Fe(II). Titanium(III) reduces the nitrates in strongly acidic, citrate-buffered, and acetate-buffered media with the comsumption of 3, 6 and 8 equivalents respectively of Ti(III) per nitrate group. Nitramines are determined by reduction with a mixture of Ti(III) and Fe(II). Determination of nitrates and nitramines by trans-nitration with salicylic acid is suitable on the microscale. A new electrolytic reduction automatic microburette was devised for the reduction, storage and use of the titanium(III) solution.
Awad
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WI
Research Microanalytical Laboratories, Chemistry Department, Faculty of Science, Ain Shams University, Cairo, U.A.R.
Hassan
S S
SS