GB/T 37632-2019 Translated English of Chinese Standard. (GBT 37632-2019, GB/T37632-2019, GBT37632-2019): Man-Made Fiber - Test Method for Titanium Dioxide Content [Buy--download True-PDF in 3-second: https://play.google.com/books > Sign in > This BOOK > "3-dots" > Export > Save as "*.pdf"]https://www.chinesestandard.net, 12 ott 2019 - 12 pagine This Standard specifies the test method for determination of titanium dioxide content in man-made fibers by spectrophotometry. This Standard is applicable to the man-made fibers; thereof, the functional man-made fibers can use it as a reference. |
Sommario
| 3 | |
Scope | 4 |
Reagents | 5 |
Preparation of Working Curve | 6 |
Determination of Specimen | 7 |
Result Expression | 8 |
Test Report | 9 |
Appendix A Normative ManMade Fibre Ashing Method | 10 |
Parole e frasi comuni
100mL volumetric flask 10mL of concentrated 250mL conical flask 5min accurate to 0.1mg acid-proof gloves needs Add 10mL Add water Ammonium sulfate analytically pure attention to releasing beaker burning 30min Chemical Fiber concentrated sulfuric acid constant weight cover it incompletely crucible tongs crucible with constant curve dilute dioxide and molar document dried specimen dryer Fujian full-dull fiber furnace door glasses and acid-proof greater than 0.5mg heating device hydrogen peroxide solution instrument into zero man-made fibers mass of titanium measure the absorbance measured absorbance molar mass mouth move the porcelain muffle furnace peroxide solution 5.7 Petrochemical porcelain crucible procedures of burning reagent blank solution releasing the air Repeat the procedures room temperature shake evenly SINOPEC specified in GB/T spectrophotometer standard colorimetric solutions suitable cuvette sulfuric acid solution temperature to 750±10 Test Method test results test solution titanium dioxide content tongs to move wavelength of 410nm weigh the mass weighed specimen Zhejiang