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烟火药成分硝化纤维素的定性分析
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TJ450.6

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A Method for Qualitative Analysis of Pyrotechnic Composition Ingredient Nitrocellulose
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    摘要:

    为了对烟火药成分硝化纤维素进行定性分析,基于硝化纤维素皂化反应生成亚硝酸盐的特性,提出了一种以对氨基苯磺酸和 α-萘胺为显色剂,通过测定亚硝酸盐来测定硝化纤维素的定性分析方法。通过实验对硝化棉纯样和烟花爆竹常用化工原材料进行了定性分析,并研究了显色剂组分配比和皂化分解温度对检验结果的影响。结果表明:样品中的硝化纤维素均被检出,且常用的烟花爆竹化工原材料不会对检测结果产生干扰;0.01mg硝化纤维素能被检出,最低检出含量(质量分数)为0.5%,能够满足烟花爆竹行业检验要求;显色剂中对氨基苯磺酸和 α-萘胺质量比为10∶1、皂化分解温度为70℃以上时,显色效果最佳,检出时间最短。

    Abstract:

    In order to qualitatively analyze the nitrocellulose of pyrotechnic composition, based on the characteristics of saponification reaction of nitrocellulose to generate nitrite, a qualitative analysis method for determining nitrocellulose by determining nitrite was proposed, with p-aminobenzenesulfonic acid and α-naphthylamine as color-developing agents. Qualitative analysis of pure nitrocellulose and common chemical raw materials for fireworks and firecrackers was carried out through experiments, and the effects of the ratio of color developer components and saponification decomposition temperature on the test results were studied. The results show that nitrocellulose in the samples are detected and the commonly used chemical raw materials of fireworks and firecrackers do not interfere with the inspection results; 0.01mg nitrocellulose can be detected, and the minimum detection concentration (mass fraction) is 0.5%, which can meet the detection requirements of fireworks and firecrackers industry; When the mass ratio of p-aminobenzenesulfonic acid and α-naphthylamine of color developer is 10:1 and the saponification decomposition temperature is above 70°C, the color development effect is the best and the detection time is the shortest.

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  • 在线发布日期: 2022-12-26
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