uggs online Kerosene TBP, HDPB and H2MBP by gas ch

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Kerosene TBP, HDPB and H2MBP by gas chromatography

minl sample volume was 0.12. Under the same conditions, the TBP kerosene standard solution was injected into the GC column on the methylation HDBP and HzMBP use the same steps, they are in the radiation of a 3tooldm 30TBP a kerosene organic phase of a HNO3 system exists as a product of radiation . TBP and HDPB and HzMBP the content of methylated derivatives, and control through the use of peak area compared with NEC-N6928A-12 plotter NEC 750 computer for a least squares fitting procedure of the standard solution to determine the calibration charts . TBP content as a quantitative determination,[link widoczny dla zalogowanych], the sample was diluted 10 times with kerosene in order to eliminate peak tailing TBP. Results and discussion of gas-liquid chromatography to determine the TBP, HDBP and HMBP there are many reports. The methods include gas chromatography prior to HDBP and H. MBP and TBP solution separation, solvent extraction and the use of CHzN2 methylation. According to the literature should be carried out in diethyl ether methylation. However, to esterification HDBP kerosene and HtMBP amyl alcohol standard solution, that solution in the esterification of TBP kerosene mixture of these two compounds, the use of CHNz diethyl ether, the result is not satisfactory. Therefore decided to use diisopropyl ether [relative transmittance (g) to replace the one diethyl ether 3.883 (E = 4.335). The polarity of the diisopropyl ether diethyl ether closer than kerosene (e = 2.0l5), the diethyl ether DIPE better than all of the mixture,[link widoczny dla zalogowanych], it is recommended as this derivative The thinner material. Using this method, in kerosene solution TBP, HDBP and H2MBP direct determination in mixtures without separation. However, as shown in Figure 1, 'rBP, MeDBP Wada P-1 radiation 3O Qiong a 3mo1dmHNOs system kerosene organic phase TBp, MeDBP and Me = MBP chromatographic field A - M nosebleed MBP (3.83rain) B - MeDBP (8.09rain) C - TBP (15.59mtt1) MeMBP 30TBP the good results of a kerosene from a 3tooldm-HNOsY radiation received from the organic phase content of these compounds were the calibration standard solution (Figure 2 ~) the push to calculate the unknown sample peak area of a d _ d BPJ/10 handsome ring 2TBP stoichiometric standard curve control Chih 1992 [DBMeDBP/10dm Figure 5HDBP buildings come standard curve. Standard map is drawn according to least squares method,[link widoczny dla zalogowanych], which derived from TBP,[link widoczny dla zalogowanych], HDBP and HMBP correction coefficients were 0.992,0.992 and 0.990. Determination of repeatability of results at least three samples of unknown and standards are consistent. Within the content of the study, TBP, HDBP and HMBP relative standard deviation of l ~ Figure 4HzMBP granted quasi-song City 2TBP, MeDBP and Me2MBP the detection limit, respectively (30,25 and 20) �� 10_ With the detection of volatile compounds increased (Figure 1). Table l shows the results of Y radiation standard of the sample. content (tool / rim) and radiation chemistry yield (G value) is consistent with the reported values. Table 1 with different dose rate on a kerosene 3mol/dm3HNO3 system 30TBP Y radiation (high-speed 200kOy) after the organic phase TBP, MeDBP and M ~ = MBP determined by gas chromatography Island * G is defined as consumption or production per 100eV take along the tool London. value (mo ��dm һ 0) �� Avogadro constant (molecules induced mol-') �� 1OO molecules / 1OOev translated TheAnalyst, 199l, 1l6 (10): l067 ~ l069 Song Xuezhi Institute of Translation 53 Chai Lindi school secondary standard reference reagent bluntness device through the validation level COSTIND stoichiometric reagents purity of the base station developed secondary standard device on May 11, 1992 in Jinan passed the appraisal organized by the State approval . the device on resistance, electromotive force, time, quality and other basic physical measurements to the baseline value purity reagents, valuation accuracy, stable performance and high accuracy. total uncertainty (3a) to 0.007. participants Experts believe that the device at home and abroad to achieve the same level of similar advanced equipment, fully meet the JJG2061 - 90 (reference reagent purity value system (Shao-Ming Wang reported)
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