Reduction of 2,6-dimethoxyphenol odor emitted from Ribbed Smoked Sheet by Co(II)-salen complex

IF 2.9 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES Air Quality Atmosphere and Health Pub Date : 2024-04-23 DOI:10.1007/s11869-024-01557-8

Hiroto Achira, Hirohiko Washiya

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Abstract

Gas chromatography–mass spectroscopy (GC–MS) was used to characterize ribbed smoked sheet No. 3 (RSS 3) and latex to confirm the presence of 2,6-dimethoxyphenol odor. The selected ion monitoring (SIM) chromatogram of RSS 3 exhibited a 2,6-dimethoxyphenol peak at m/z 154, while the latex chromatogram did not show any peak. Using a synthetic cis-1,4-polyisoprene rubber and 2,6-dimethoxyphenol mixture as reference, the GC–MS analysis indicated that RSS 3 emits 4.0 mg/kg of 2,6-dimethoxyphenol. When added to the SIM chromatogram, the cobalt (II)-complex of salicylaldehyde ethylenediamine Schiff base ligand (Co(II)-salen) reduced the quantity of 2,6-dimethoxyphenol. This indicates that the odor was oxidized during physical mixing, implying that it was dissolved in the solution. Furthermore, the solubility of 2,6-dimethoxyphenol in various solvents was determined using the Hansen solubility parameters to identify the optimal solvents for the oxidation of the odor by the Co(II)-salen complex. Thermal analysis and theoretical study also indicate the generation of phenoxy radical by Co(II)-salen complex.

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用钴(II)-莎伦络合物减少罗纹烟熏板散发的 2,6-二甲氧基苯酚气味

采用气相色谱-质谱法（GC-MS）对 3 号罗纹熏制片（RSS 3）和乳胶进行表征，以确认 2,6 二甲基苯酚气味的存在。RSS 3 的选择离子监测（SIM）色谱图在 m/z 154 处显示出 2,6- 二甲氧基苯酚峰，而乳胶色谱图未显示任何峰值。以合成顺式-1,4-聚异戊二烯橡胶和 2,6- 二甲氧基苯酚混合物为参照物，气相色谱-质谱分析表明 RSS 3 释放出 4.0 mg/kg 的 2,6- 二甲氧基苯酚。当把水杨醛乙二胺席夫碱配体的钴 (II) 复合物（Co(II)-salen）加入 SIM 色谱图中时，2,6-二甲氧基苯酚的数量减少了。这表明该气味在物理混合过程中被氧化，意味着它已溶解在溶液中。此外，还利用汉森溶解度参数测定了 2,6- 二甲氧基苯酚在各种溶剂中的溶解度，从而确定了 Co(II)-salen 复合物氧化臭味的最佳溶剂。热分析和理论研究也表明 Co(II)-salen 复合物生成了苯氧基自由基。

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来源期刊

Air Quality Atmosphere and Health ENVIRONMENTAL SCIENCES-

CiteScore

8.80

自引率

2.00%

发文量

146

审稿时长

>12 weeks

期刊介绍： Air Quality, Atmosphere, and Health is a multidisciplinary journal which, by its very name, illustrates the broad range of work it publishes and which focuses on atmospheric consequences of human activities and their implications for human and ecological health. It offers research papers, critical literature reviews and commentaries, as well as special issues devoted to topical subjects or themes. International in scope, the journal presents papers that inform and stimulate a global readership, as the topic addressed are global in their import. Consequently, we do not encourage submission of papers involving local data that relate to local problems. Unless they demonstrate wide applicability, these are better submitted to national or regional journals. Air Quality, Atmosphere & Health addresses such topics as acid precipitation; airborne particulate matter; air quality monitoring and management; exposure assessment; risk assessment; indoor air quality; atmospheric chemistry; atmospheric modeling and prediction; air pollution climatology; climate change and air quality; air pollution measurement; atmospheric impact assessment; forest-fire emissions; atmospheric science; greenhouse gases; health and ecological effects; clean air technology; regional and global change and satellite measurements. This journal benefits a diverse audience of researchers, public health officials and policy makers addressing problems that call for solutions based in evidence from atmospheric and exposure assessment scientists, epidemiologists, and risk assessors. Publication in the journal affords the opportunity to reach beyond defined disciplinary niches to this broader readership.