1、P MIL-S-20322B INT AND 1 68 B 9999906 0439368 T ST I INCH-POUND I MI L-S-2 O 3 2 2B INT. AMENDMENT 1 (AR) 30 June 1990 MILITARY SPECIFICATION ONTIUM NITRATE, ANHYDROUS This Interim Amendment is -approved for use within the U.S. Army Armament, Munitions and Chemical April 1973. Command with- MIL-S-20
2、322B dated PAGE 5 Add the following new paragraph: 19 1f4.4.1.1 Alternate method. Weig a-out 35 mg of strontium nitrate sample to the nearest 0.01 mg and dissolve in deionized water, Dilute this to one liter in a one liter volumetric flask. The sample should be analyzed in triplicate. After setting
3、up the Lamba 5 UV-visible spectrophotometer and calibrating it to read out in absorbance according to the nitrate method, analyze each solution of strontium nitrate in turn. Record the readings obtained. Calculate the percent strontium nitrate as follows: Y = (Abs of sample) x (mg N2 standard) x (75
4、5.451 (Abs of standard) (liter) ( w) Where: Y = Percent strontium nitrate Abs = Absorbancetmeasured at 220 nem, W = Sample weight in milligrams Note: 755.45 is caloulated by dividing the molecular weight of strontium nitrate by the molecular weight of nitrogen (N2 1 and taking that value times one hundredeft Custodian : Army-AR AMSC N/A DISTRIBUTION STATEMENT A Is unlimited. -I- - Preparing activ ity : Army-AR (Project 6810 - A070) 1 of 1 FSC 6810 Approved for public release; distribution Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
