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Mobile phase issolve triethylamine 5.6mL and acetic acid 1.14mL,dilute with water to 1000mL.
Post column Reagentissolve 0.65g of urea in a solution of 0.12g arsenazo acid in 400mL of water previously acidified with 6.3mL of nitric acid.Pass the solution through a filter ,wash the filter with 500mL of water,dilute with water to 1000mL.
Flow rate of Post column Reagent:0.6mL/min
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