GB/T 33828-2017 Translated English of Chinese Standard (GBT 33828-2017, GB/T33828-2017, GBT33828-2017): Determination of contents of Fe (III) in nano lithium iron phosphatehttps://www.chinesestandard.net, 2017 M11 4 - 14 pages This standard specifies the principle, equipment, reagents, procedures and test report contents for the method of determination of trivalent iron content in nano lithium iron phosphate. This standard is applicable to the determination of trivalent iron in nano lithium iron phosphate in the range of 0.2% ~ 5.0%. |
Contents
Foreword | 5 |
Reagent | 6 |
Test and calculation | 7 |
Repeatability | 10 |
Test report | 11 |
Appendix A Informative Trivalent iron qualitative test method | 12 |
Common terms and phrases
250 mL conical accurately pipette 20.00 acid solution 5.5 acid The mass ADD 30 mL ammonium ferrous sulfate ammonium sulfate solution binding energy blank solution CALCULATE the mass changes from green chemical shift consumed potassium dichromate content in sample dichromate standard titration diphenylamine sulfonate indicator end point ferrous ammonium sulfate ferrous iron ferrous sulfate solution fraction of ferrous green to purple hydrochloric acid solution isatin mass fraction milliliters mL MIX it uniformly mL conical flask mL of ammonium mL of ferrous mL of hydrochloric mL of sulfuric mL of water Molar mass Mossbauer potassium dichromate standard RECORD the volume sample in accordance sample solution 6.1.2 single-line pipette 4.3 solution as V3 solution changes solution for titration standard deviation standard titration solution sulfate solution 5.15 sulfuric acid 5.3 Sulfuric acid solution surface plate titanium trichloride solution titration of blank titration solution 5.8 titration solution consumed total iron Volume of potassium volumetric flask XANES