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Cholerny Spammer
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 Posted: Tue 8:29, 28 Dec 2010 Post subject: mbt shoes cheap Spectrophotometric determination o |
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Spectrophotometric determination of hydrogen peroxide in the TiO2 content of bamboo fiber
Equation of the linear trend, irregular decline (not shown). Therefore, Determination of hydrogen peroxide detection limit of the range Titanium 0.05 ~ 3.20mg / L, from the absorbance curve equation for a 0.085lx +0.0093 (R a 0.9992). 2.3.2 The recovery test of time / rain reaction time in Figure 2 for a network round the absorbance curve Fig. 2Curveoftime-absorbanee Figure 3 Standard curve of Fig. 3Standardcurve using spike recovery method,[link widoczny dla zalogowanych], the medical add a certain amount of cotton fiber Ti standard solution as the standard sample, study methods of recovery. 4 copies of medical weighed 5g fiber cotton (without TiO.) In the porcelain crucible, respectively, added to the crucible of titanium standard solution, the concentration of 0.20,0.40,0.8 O,[link widoczny dla zalogowanych], 1.6Omg / L , according to the aforementioned sample solution of 1.2 and 1.3 deal with the standard sample preparation methods to measure the results in Table 1. Can be seen from Table 1,[link widoczny dla zalogowanych], No. 3 Tian Baoyong Determination of hydrogen peroxide and other bamboo fiber in TiO. The method of content 2O3 different concentrations of Ti for the determination of the average recovery rate of 98.5 or more. Table 1 Experimental results of recovery of Tab. 1ResultoIrecoveryratio2.3.3 precision experiments will be on the same day bamboo fiber samples (titanium content 103.00mg/kg that have been seized samples) of 1.2 and 1.3 by the aforementioned preparation method of sample solution preparation,[link widoczny dla zalogowanych], test samples were prepared by 6, The results in Table 2. This method, the relative standard deviation (RSD) was 0.58%. Precision results in Table 2 Tab. 2Resultofprecision3 Conclusion 1) using a muffle furnace heating,[link widoczny dla zalogowanych], the temperature is 550 ~ 600 ��, maintained 6h, samples of bamboo fiber can sample pre-treatment of titanium added to achieve complete nitrification. 2) with hydrogen peroxide as a reagent in sulfuric acid, phosphoric acid co-exist in the media, use ascorbic acid as a masking agent, by ultraviolet spectrophotometry at a wavelength of 410nm was measured in the TiO bamboo fiber content. 3) The detection limit of 0.05mg / L, the linear range of 0. O5 ~ 3.20mg / L, average recovery was 98.5 or more, the relative standard deviation (RSD) was 0.58. The method is accurate and reliable for the actual testing and quality control samples.
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