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Determination of the oxygen feed grade calcium phosphate,[link widoczny dla zalogowanych], calcium dihydrogen phosphate of calcium and phosphorus content

3.8gEDTA into the 200mL beaker, add 100mL of water, dissolved in water heated to move 1000mL volumetric flask,[link widoczny dla zalogowanych], dilute to the mark. 3.10EDTA calibration standard solution: 10mL imbibe calcium standard solution was titrated by determination of the sample. 3.11EDTA calcium titration calculation: T if V0 where: T: EDTA standard solution of calcium titer (Camg / mL) P: the concentration of calcium standard solution (g / mL) V: The standard solution with calcium volume (mL) V. : EDTA standard titrant consumption volume (mL) of China Feed Industry Information Net [link widoczny dla zalogowanych] chinafeed. org. cn E-mail: slgj @ chinafeed. org. cn 2916.2122.52 into 22.7116.5716_3922.69 method 21.3916.1816.2922.16 method 21_4816.2216_3222.19 DCP Ca: t = 1.43 ∞: 3.182t 0.05),[link widoczny dla zalogowanych], show that the method is accurate (Table 1). 7 Conclusion The determination of dicalcium phosphate and calcium dihydrogen phosphate phosphorus content, using the regression equation fast, easy, accurate data; determination of calcium content of the end of the color easy to observe,[link widoczny dla zalogowanych], and the range of error in the HUI can be used for quality control of raw materials production units The rapid test application in practical work. (