This paper reported a new analytical method for the simultaneous determination of seven benzotriazole ultraviolet absorbers and seven antibacterial agents in textiles. After ultrasonic extraction for the textile sampl...This paper reported a new analytical method for the simultaneous determination of seven benzotriazole ultraviolet absorbers and seven antibacterial agents in textiles. After ultrasonic extraction for the textile samples in methanol, the solutions were analyzed by ultra-high performance liquid chromotagraphy/orbitrap high resolution mass spectrometry (UPLC/Orbitrap HRMS). It showed that a good chromatographic separation for these target compounds was achieved by a Hypersil GOLD column (100 mm × 2.1 mm × 1.9 μm) with a gradient elution of methanol and 0.1% aqueous formic acid solution (containing 0.5 mmol/L ammonium acetate). Triclosan and 4-chloro-3,5-dimethyl phenol (PCMX) were detected by the orbitrap HRMS in an electrospray ionization (ESI) negative mode while the other twelve target compounds were detected by orbitrap HRMS in ESI positive mode. Full scan experiment was performed over the range from m/z 100 to m/z 500. These target compounds were routinely detected with mass accuracy below 2 × 10-6 (2 ppm) at the optimized conditions. The results showed that the limits of detection (LODs) were in the range from 0.1 to 0.3 μg/kg. The blank samples were spiked at three levels and their average recoveries varied from 80.5% to 96.3% while the relative standard deviation (RSD) changed from 3.2% to 9.9%. The present method was also applied for the determination of those ultraviolet absorbers and antibacterial agents in the commercial textiles.展开更多
This study established a method using gas chromatography-electrostatic field Orbitrap high-resolution mass spectrometry(Orbitrap GC-MS)for the simultaneous determination of 70 organic pollutants across 4 categories:or...This study established a method using gas chromatography-electrostatic field Orbitrap high-resolution mass spectrometry(Orbitrap GC-MS)for the simultaneous determination of 70 organic pollutants across 4 categories:organochlorine pesticides(OCPs),polycyclic aromatic hydrocarbons(PAHs),polychlorinated biphenyls(PCBs),and phthalates(PAEs)in infant cereal-based supplementary foods.Techniques integrating cryogenic centrifugation and lipid and protein adsorbent(LPAS)purification were employed.The precise mass numbers of target compounds were determined by Orbitrap GC-MS in full-scan mode(Full MS),which effectively minimized matrix interferences in these foods.Method validation on rice flour samples demonstrated that the 70 compounds exhibited excellent linearity within their respective mass concentration ranges,with correlation coefficients all exceeding 0.995.The detection limits for this method ranged 0.10–1.00μg/kg,while the quantification limits varied 0.3–3.0μg/kg,meeting the established detection requirements.The average spike recovery of the 70 compounds at 3 spiked levels(5,20,and 100μg/kg)ranged 75.3%–119.3%,with relative standard deviations ranging 1.8%–10.8%.Both inter-day and intra-day precision demonstrated relative standard deviation values below 15%.This method was applied to analyze 100 samples of commercial infant cereal-based supplementary food,revealing the presence of PAEs and PAHs in 12.0%of the samples.Notably,no OCPs or PCBs were detected.The detected concentrations of benzo[a]pyrene(Ba P)and dibutyl phthalate(DBP)were(4.2±0.1)and(1.8±0.3)μg/kg,respectively.This method is straightforward,highly sensitive,and suitable for the rapid screening and confirmation of 70 organic pollutants in infant cereal-based supplementary foods.展开更多
目的利用高分辨质谱鉴定银丹心脑通软胶囊的化学成分,与网络药理学研究结合,探讨银丹心脑通软胶囊“心脑同治”的活性成分及其潜在分子作用机制。方法基于UHPLC Q-Exactive Plus Orbitrap HRMS鉴定出的银丹心脑通软胶囊化学成分;通过TC...目的利用高分辨质谱鉴定银丹心脑通软胶囊的化学成分,与网络药理学研究结合,探讨银丹心脑通软胶囊“心脑同治”的活性成分及其潜在分子作用机制。方法基于UHPLC Q-Exactive Plus Orbitrap HRMS鉴定出的银丹心脑通软胶囊化学成分;通过TCMSP和SwissADME数据库,以口服利用度≥30%、类药性≥0.18和胃肠道吸收得分为“High”、类药性至少通过3个“Yes”来筛选活性成分,再检索活性成分的潜在作用靶点;通过OMIM、DisGeNET、GeneCards、TTD和PharmGKB数据库获取与心脑血管疾病相关靶基因。使用Venny软件获得两者的交集靶点,采用Cytoscape3.9.1分析软件结合STRING数据库对交集靶点进行蛋白互作网络分析和“药物-活性成分-靶点-疾病”网络构建,确定核心成分与靶点。利用DAVID数据库对银丹心脑通软胶囊治疗心脑血管疾病的潜在靶基因进行基因本体(GO)分析及京都基因与基因组百科全书富集分析(KEGG)预测其作用机制。最后将度值排名前5的靶点与主要活性成分进行分子对接模拟以验证网络药理学结果。结果通过UHPLC Q-Exactive Plus Orbitrap HRMS技术鉴定出银丹心脑通软胶囊中82个化学成分,主要包括黄酮类、有机酸类、菲醌类和二萜内酯类化合物;经TCMSP、SwissADME数据库筛选得到活性成分34个,如槲皮素、异樱花亭、二氢丹参酮I等,相对应的靶点389个,进一步筛选出治疗心脑血管疾病相关的潜在靶基因249个。GO和KEGG富集分析显示,银丹心脑通软胶囊的活性成分可能主要通过脂质与动脉粥样硬化通路、流体剪切应力与动脉粥样硬化、AGE-RAGE、IL-17、PI3K-Akt、HIF-1、TNF等通路来发挥治疗心脑血管疾病的作用。分子对接证实STAT3、HSP90AA1等与二氢丹参酮I、山柰酚、木犀草素等具有较高的亲和力。结论本研究初步预测了银丹心脑通软胶囊“心脑同治”其作用机制与动脉粥样硬化、炎症因子、细胞凋亡和氧化应激等方面有关,为后续作用机制的深度分析及临床应用提供科学依据。展开更多
文摘This paper reported a new analytical method for the simultaneous determination of seven benzotriazole ultraviolet absorbers and seven antibacterial agents in textiles. After ultrasonic extraction for the textile samples in methanol, the solutions were analyzed by ultra-high performance liquid chromotagraphy/orbitrap high resolution mass spectrometry (UPLC/Orbitrap HRMS). It showed that a good chromatographic separation for these target compounds was achieved by a Hypersil GOLD column (100 mm × 2.1 mm × 1.9 μm) with a gradient elution of methanol and 0.1% aqueous formic acid solution (containing 0.5 mmol/L ammonium acetate). Triclosan and 4-chloro-3,5-dimethyl phenol (PCMX) were detected by the orbitrap HRMS in an electrospray ionization (ESI) negative mode while the other twelve target compounds were detected by orbitrap HRMS in ESI positive mode. Full scan experiment was performed over the range from m/z 100 to m/z 500. These target compounds were routinely detected with mass accuracy below 2 × 10-6 (2 ppm) at the optimized conditions. The results showed that the limits of detection (LODs) were in the range from 0.1 to 0.3 μg/kg. The blank samples were spiked at three levels and their average recoveries varied from 80.5% to 96.3% while the relative standard deviation (RSD) changed from 3.2% to 9.9%. The present method was also applied for the determination of those ultraviolet absorbers and antibacterial agents in the commercial textiles.
基金funded by National Key Research and Development Program for Young Scientists of China(2022YFF1102900)Hebei Province High-level Talent Funding Project(C20221009)。
文摘This study established a method using gas chromatography-electrostatic field Orbitrap high-resolution mass spectrometry(Orbitrap GC-MS)for the simultaneous determination of 70 organic pollutants across 4 categories:organochlorine pesticides(OCPs),polycyclic aromatic hydrocarbons(PAHs),polychlorinated biphenyls(PCBs),and phthalates(PAEs)in infant cereal-based supplementary foods.Techniques integrating cryogenic centrifugation and lipid and protein adsorbent(LPAS)purification were employed.The precise mass numbers of target compounds were determined by Orbitrap GC-MS in full-scan mode(Full MS),which effectively minimized matrix interferences in these foods.Method validation on rice flour samples demonstrated that the 70 compounds exhibited excellent linearity within their respective mass concentration ranges,with correlation coefficients all exceeding 0.995.The detection limits for this method ranged 0.10–1.00μg/kg,while the quantification limits varied 0.3–3.0μg/kg,meeting the established detection requirements.The average spike recovery of the 70 compounds at 3 spiked levels(5,20,and 100μg/kg)ranged 75.3%–119.3%,with relative standard deviations ranging 1.8%–10.8%.Both inter-day and intra-day precision demonstrated relative standard deviation values below 15%.This method was applied to analyze 100 samples of commercial infant cereal-based supplementary food,revealing the presence of PAEs and PAHs in 12.0%of the samples.Notably,no OCPs or PCBs were detected.The detected concentrations of benzo[a]pyrene(Ba P)and dibutyl phthalate(DBP)were(4.2±0.1)and(1.8±0.3)μg/kg,respectively.This method is straightforward,highly sensitive,and suitable for the rapid screening and confirmation of 70 organic pollutants in infant cereal-based supplementary foods.
文摘目的利用高分辨质谱鉴定银丹心脑通软胶囊的化学成分,与网络药理学研究结合,探讨银丹心脑通软胶囊“心脑同治”的活性成分及其潜在分子作用机制。方法基于UHPLC Q-Exactive Plus Orbitrap HRMS鉴定出的银丹心脑通软胶囊化学成分;通过TCMSP和SwissADME数据库,以口服利用度≥30%、类药性≥0.18和胃肠道吸收得分为“High”、类药性至少通过3个“Yes”来筛选活性成分,再检索活性成分的潜在作用靶点;通过OMIM、DisGeNET、GeneCards、TTD和PharmGKB数据库获取与心脑血管疾病相关靶基因。使用Venny软件获得两者的交集靶点,采用Cytoscape3.9.1分析软件结合STRING数据库对交集靶点进行蛋白互作网络分析和“药物-活性成分-靶点-疾病”网络构建,确定核心成分与靶点。利用DAVID数据库对银丹心脑通软胶囊治疗心脑血管疾病的潜在靶基因进行基因本体(GO)分析及京都基因与基因组百科全书富集分析(KEGG)预测其作用机制。最后将度值排名前5的靶点与主要活性成分进行分子对接模拟以验证网络药理学结果。结果通过UHPLC Q-Exactive Plus Orbitrap HRMS技术鉴定出银丹心脑通软胶囊中82个化学成分,主要包括黄酮类、有机酸类、菲醌类和二萜内酯类化合物;经TCMSP、SwissADME数据库筛选得到活性成分34个,如槲皮素、异樱花亭、二氢丹参酮I等,相对应的靶点389个,进一步筛选出治疗心脑血管疾病相关的潜在靶基因249个。GO和KEGG富集分析显示,银丹心脑通软胶囊的活性成分可能主要通过脂质与动脉粥样硬化通路、流体剪切应力与动脉粥样硬化、AGE-RAGE、IL-17、PI3K-Akt、HIF-1、TNF等通路来发挥治疗心脑血管疾病的作用。分子对接证实STAT3、HSP90AA1等与二氢丹参酮I、山柰酚、木犀草素等具有较高的亲和力。结论本研究初步预测了银丹心脑通软胶囊“心脑同治”其作用机制与动脉粥样硬化、炎症因子、细胞凋亡和氧化应激等方面有关,为后续作用机制的深度分析及临床应用提供科学依据。
