3 weighing bottle with a polyurethane membrane at the top, heated to temperature 20±2°C, held in the weighing bottle for 10 minutes in order to saturate the gas phase with vapour of the analysed sample; 3 cm3 of the equilibrium gas phase is then collected through the polyurethane membrane using a syringe and then injected into the housing of the static "electronic nose"-type mutichannel gas analyser; oscillation frequency of the piezoelectric sensors is then measured for three minutes; an integral algorithm is then used to determine the resultant analytical signal in form of a kinematic " visual print" of responses of the piezoelectric sensors 5 s and 180 s after injecting sample vapour into the housing of the static "electronic nose"-type mutichannel gas analyser; presence of amines of different structure is determined from the form of the kinematic "visual prints" which are compared with standards obtained for pure amines of the same structure; reclamation of the piezoelectric sensors and the housing of the static "electronic nose"-type mutichannel gas analyser is carried out using dry laboratory air which is fed into the housing using a compressor for 120 s.;EFFECT: faster and simpler analysis while preserving accuracy, reproducibility of measurement and reliability of determining even small amounts of amines.;2 ex, 1 tbl, 2 dwg"/>
METHOD FOR SEPARATORY DETERMINATION OF AMINES OF DIFFERENT STRUCTURE IN GAS-AIR MIXTURES
FIELD: chemistry.;SUBSTANCE: parametric array of an "electronic nose"-type mutichannel gas analyser is formed using 3 piezoelectric sensors with natural frequency of 10 MHz, whose electrodes are modified, for which their surfaces are uniformly coated with sorbents in form of a film of separate acetone solutions of acid-base bromocresol blue (BCB), bromothiomol blue (BTB), bromophenol blue (BPB) with weight of 10-15 mcg, followed by drying at temperature 40°C for 15 minutes in order to remove the solvent and then putting into the housing of a static "electronic nose"-type mutichannel gas analyser and holding therein for 5 minutes in order to establish a stable zero signal; a sample of solid substance is then collected with weight of 2 g or a liquid with volume of 3 ml and then put into a 10 cm3 weighing bottle with a polyurethane membrane at the top, heated to temperature 20±2°C, held in the weighing bottle for 10 minutes in order to saturate the gas phase with vapour of the analysed sample; 3 cm3 of the equilibrium gas phase is then collected through the polyurethane membrane using a syringe and then injected into the housing of the static "electronic nose"-type mutichannel gas analyser; oscillation frequency of the piezoelectric sensors is then measured for three minutes; an integral algorithm is then used to determine the resultant analytical signal in form of a kinematic " visual print" of responses of the piezoelectric sensors 5 s and 180 s after injecting sample vapour into the housing of the static "electronic nose"-type mutichannel gas analyser; presence of amines of different structure is determined from the form of the kinematic "visual prints" which are compared with standards obtained for pure amines of the same structure; reclamation of the piezoelectric sensors and the housing of the static "electronic nose"-type mutichannel gas analyser is carried out using dry laboratory air which is fed into the housing using a compressor for 120 s.;EFFECT: faster and simpler analysis while preserving accuracy, reproducibility of measurement and reliability of determining even small amounts of amines.;2 ex, 1 tbl, 2 dwg
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机译：领域：化学物质：“电子鼻”型多通道气体分析仪的参数阵列是使用3个压电传感器构成的，其固有频率为10 MHz，其电极经过修改，其表面均匀地覆盖有吸附剂，形式为以重量计10-15 mcg的酸碱溴甲酚蓝（BCB），溴硫酚蓝（BTB），溴酚蓝（BPB）的丙酮溶液分离成膜，然后在40°C的温度下干燥15分钟以除去溶剂，然后将其放入静态“电子鼻”型多通道气体分析仪的外壳中，并在其中保持5分钟，以建立稳定的零信号;然后收集重量为2 g的固体物质样品或体积为3 ml的液体，然后放入顶部带有聚氨酯膜的10 cm 3 称量瓶中，加热至温度20 ±2°C，在称量瓶中放置10分钟，以使气相被分析样品的蒸气饱和;然后使用注射器通过聚氨酯膜收集3 cm 3 的平衡气相，然后注入静态“电子鼻”型多通道气体分析仪的外壳中;然后测量压电传感器的振荡频率三分钟。然后，在将样本蒸气注入静态“电子鼻”型多通道气体壳体后，采用积分算法确定压电传感器5 s和180 s响应的运动学“视觉打印”形式的最终分析信号。分析器根据运动学“视觉图样”的形式确定是否存在不同结构的胺，并将其与为相同结构的纯胺获得的标准进行比较;压电传感器和静态“电子鼻”型多通道气体分析仪的外壳的回收利用干燥的实验室空气进行，实验室空气通过压缩机进风到外壳中持续120 s。效果：更快，更简单的分析同时保持了准确性，测量的可重复性和确定甚至少量胺的可靠性。; 2 ex，1 tbl，2 dwg
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