向日葵茎的无机化合物

IF 0.2 Q4 CHEMISTRY, MULTIDISCIPLINARY Izvestiya Vuzov-Prikladnaya Khimiya i Biotekhnologiya Pub Date : 2023-07-02 DOI:10.21285/2227-2925-2023-13-2-220-227
A. V. Kovekhova, O. D. Arefieva, L. A. Zemnukhova, D. A. Samokhina
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引用次数: 0

摘要

本文介绍了向日葵茎中无机成分的研究结果。试验对象为茎经水、酸、碱处理前后,在不同pH值的培养基和灰样下得到的提取物。结果表明,萃取剂的性质对粉碎茎中萃取物得率的影响可以忽略不计。根据原子吸收分析,在不同介质中得到的提取物中主要离子是钾、钙、镁和钠离子。不同pH值溶液处理后的茎干灰分质量分数在0.5 ~ 5.2%之间。最低的灰分产量是由酸提取后的茎样品表征的。根据能量色散x射线荧光光谱,所有灰分样品主要含有K、Ca、Mg和P化合物。并与原始样品进行了对比,研究了筒心和筒外的灰分成分。茎芯灰分(9.3%)高于外壳灰分(7.4%)。红外光谱分析表明,灰分样品红外光谱的条带分裂性质实际上不取决于茎部和不同pH值下原料的预处理。在茎灰的红外光谱中观察到碳酸盐和硅酸盐的吸收带特征。根据x射线衍射分析,所研究的灰分样品处于结晶状态。
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Inorganic compounds of sunflower stems
This paper presents the results of studying the inorganic components of sunflower stems. The test objects are the extracts obtained at different pH values of the medium and ash samples before and after treatment of stems with water, acid, and alkali. The results show that the nature of the extractant has a negligible effect on the yield of extractive substances from the crushed stems. According to atomic absorption analysis, the main ions in extracts obtained in different media are potassium, calcium, magnesium, and sodium ions. The mass fraction of ash after treatment of stems with solutions at different pH values varies from 0.5 to 5.2%. The lowest ash yield is characterized by a sample of stems after acid extraction. According to energy dispersive X-ray fluorescence spectroscopy, all ash samples contain mainly K, Ca, Mg, and P compounds. The ash components of the core and outer part of the stem were also studied in comparison with the original sample. The ash content of the stem core (9.3%) is higher than that of the outer shell (7.4%). The IR spectroscopy shows that the nature of band splitting in the IR spectra of the ash samples practically does not depend on the stem part and the pretreatment of raw materials at different pH values. Absorption bands characteristic of carbonates and silicates are observed in the IR spectra of the stem ash. According to X-ray diffraction analysis, the studied ash samples are in a crystalline state.
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来源期刊
自引率
50.00%
发文量
63
审稿时长
12 weeks
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