The extraction residue from Shengli lignite was sequentially dissolved in cyclohexane, benzene, methanol, ethanol, and isopropanol in an autoclave at 320℃ to afford soluble portions(SPs) 1–5(SP_1-SP_5) and the final...The extraction residue from Shengli lignite was sequentially dissolved in cyclohexane, benzene, methanol, ethanol, and isopropanol in an autoclave at 320℃ to afford soluble portions(SPs) 1–5(SP_1-SP_5) and the final residue(FR). The total yield of SP_1-SP_5 is ca. 55.1%. The FR was subjected to ruthenium ioncatalyzed oxidation and the resulting products were isolated from the reaction mixture and esterified.Both the esterified products and SP_1-SP_5 were analyzed with a gas chromatograph/mass spectrometer.In total, 342 compounds were identified in SP_1-SP_5. They can be classified into normal alkanes, branched alkanes, alkenes, alkanedienes, arenes, alkanols, methylcycloalkanes, alkenols, alkylbenzenemethanols,arenols, anisol and substituted anisols, polymethyldihydrobenzofurans, arenofurans, dibenzofurans,ethoxymethylbenzenes, aldehydes, ketones, esters, nitrogen-containing organic compounds, sulfurcontaining organic compounds, and other compounds. Among the compounds, arenols are predominant in SP_1 and SP_2 and the main compounds in SP_3, while the main compounds in SP_4 and SP_5 are esters and arenes, respectively. According to the esterified products identified, the products from the FR oxidation can be grouped into non-benzene ring carboxylic acids(NBCAs) and benzenepolycarboxylic acids(BPCAs). The total yield of BPCAs is much higher than that of NBCAs, suggesting that the FR is rich in condensed aromatic moieties.展开更多
目的分析百草枯中毒肺损伤的CT表现和临床特点,从而提高对百草枯中毒肺损伤的认识。方法回顾性分析安徽省立医院2010年12月至2017年11月75例百草枯中毒肺损伤病例的CT影像和临床资料,根据百草枯的中毒时间分为早期(1-7天)、中期(8-21天...目的分析百草枯中毒肺损伤的CT表现和临床特点,从而提高对百草枯中毒肺损伤的认识。方法回顾性分析安徽省立医院2010年12月至2017年11月75例百草枯中毒肺损伤病例的CT影像和临床资料,根据百草枯的中毒时间分为早期(1-7天)、中期(8-21天)、后期(≥22天)和中毒剂量分为少量组(≤10 m L)25例、中量组(11-30 m L)20例、大量组(>30 m L)30例,对比分析各组CT表现。结果 75例百草枯中毒中,磨玻璃影,肺实变,肺纤维化与不同时间之间存在统计学差异(χ~2=15.354,P=0.00,χ~2=10.446,P=0.004,χ~2=7.572,P=0.028),且早期CT主要表现为磨玻璃影(78.33%),中期主要为肺实变(74.47%),后期主要为肺纤维化(72.50%)。磨玻璃影,肺实变,肺纤维化与不同剂量之间存在统计学差异(P<0.05),且中毒少量组以磨玻璃影主要表现(76.00%)、中量组以磨玻璃影(70.00%)及实变(75.00%)为主要表现、大量组以实变(70.00%)、肺纤维化(90.00%)为主要表现。结论百草枯中毒肺损伤的CT表现具有一定的特征性,其表现与剂量、时间有关,对临床诊断和治疗有一定指导价值。展开更多
基金provided by the Key Project of Joint Fund from National Natural Science Foundation of Chinathe Government of Xinjiang Uygur Autonomous Region (Grant U1503293)+1 种基金Natural Scientific Foundation of China (Grant 21576280)a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions
文摘The extraction residue from Shengli lignite was sequentially dissolved in cyclohexane, benzene, methanol, ethanol, and isopropanol in an autoclave at 320℃ to afford soluble portions(SPs) 1–5(SP_1-SP_5) and the final residue(FR). The total yield of SP_1-SP_5 is ca. 55.1%. The FR was subjected to ruthenium ioncatalyzed oxidation and the resulting products were isolated from the reaction mixture and esterified.Both the esterified products and SP_1-SP_5 were analyzed with a gas chromatograph/mass spectrometer.In total, 342 compounds were identified in SP_1-SP_5. They can be classified into normal alkanes, branched alkanes, alkenes, alkanedienes, arenes, alkanols, methylcycloalkanes, alkenols, alkylbenzenemethanols,arenols, anisol and substituted anisols, polymethyldihydrobenzofurans, arenofurans, dibenzofurans,ethoxymethylbenzenes, aldehydes, ketones, esters, nitrogen-containing organic compounds, sulfurcontaining organic compounds, and other compounds. Among the compounds, arenols are predominant in SP_1 and SP_2 and the main compounds in SP_3, while the main compounds in SP_4 and SP_5 are esters and arenes, respectively. According to the esterified products identified, the products from the FR oxidation can be grouped into non-benzene ring carboxylic acids(NBCAs) and benzenepolycarboxylic acids(BPCAs). The total yield of BPCAs is much higher than that of NBCAs, suggesting that the FR is rich in condensed aromatic moieties.
文摘目的分析百草枯中毒肺损伤的CT表现和临床特点,从而提高对百草枯中毒肺损伤的认识。方法回顾性分析安徽省立医院2010年12月至2017年11月75例百草枯中毒肺损伤病例的CT影像和临床资料,根据百草枯的中毒时间分为早期(1-7天)、中期(8-21天)、后期(≥22天)和中毒剂量分为少量组(≤10 m L)25例、中量组(11-30 m L)20例、大量组(>30 m L)30例,对比分析各组CT表现。结果 75例百草枯中毒中,磨玻璃影,肺实变,肺纤维化与不同时间之间存在统计学差异(χ~2=15.354,P=0.00,χ~2=10.446,P=0.004,χ~2=7.572,P=0.028),且早期CT主要表现为磨玻璃影(78.33%),中期主要为肺实变(74.47%),后期主要为肺纤维化(72.50%)。磨玻璃影,肺实变,肺纤维化与不同剂量之间存在统计学差异(P<0.05),且中毒少量组以磨玻璃影主要表现(76.00%)、中量组以磨玻璃影(70.00%)及实变(75.00%)为主要表现、大量组以实变(70.00%)、肺纤维化(90.00%)为主要表现。结论百草枯中毒肺损伤的CT表现具有一定的特征性,其表现与剂量、时间有关,对临床诊断和治疗有一定指导价值。
