研究采用三大关键技术：1）HPLC定量分析酚类标志物（gastrodin、对羟基苯甲醇等）；2）电子鼻（E-nose）结合主成分分析（PCA）解析气味特征；3）顶空固相微萃取-气相色谱-质谱联用（HS-SPME-GC-MS）鉴定挥发物。 样本涵盖中国8省区的15份天麻种质，包括4个主要变种。

本研究针对大学生群体频繁摄入含丙烯酰胺 (AA)和反式脂肪 (TF)的加工食品问题，采用高效液相色谱 (HPLC)和气相色谱-质谱联用 (GC-MS)技术定量分析400名埃及大学生膳食样本，发现炸豆饼 (2.77 μg/g AA)和饼干 (11.46 μg/g TF)为高风险食品，揭示性别差异的饮食行为模式，证实知识水平与摄入量无显著相关性 ...

Schug discusses the application and benefits of vacuum ultraviolet (VUV) detection in gas chromatography (GC) and how advanced modern machine learning approaches can be implemented.

LONDON, GREATER LONDON, UNITED KINGDOM, July 4, 2025 /EINPresswire.com/ -- Save 30% on all global market reports with code ONLINE30 – stay informed on tariff changes, macroeconomic trends, and more.

Environmental polycyclic aromatic hydrocarbons can prove dangerous if metabolites enter human systems. A new gas chromatography-based approach was developed to analyze the hydroxy derivatives in ...

Tobacco samples of a same cultivar grown in different plantations in China were evaluated for their chemical compositions at different maturities for the first time. This was accomplished by a ...

The GC-MS system was a Varian model 3800 equipped with an injector model 1079, a capillary column VF 5MS low bleed of 30 m length ´ 0.25 mm i.d., 0.25 µm film (Varian) and an autosampler model AS8200 ...

Agilent J&W Scientific GC column s offer the highest quality and performance of any GC columns on the market today. From the lowest bleed levels and the best inertness for acid, base, and mixed ...

The DB-17 GC Column is a (50%-Phenyl)- methylpolysiloxane column of mid polarity. The DB-17 GC Column is excellent for confirmation analysis. The DB-17 GC Column is equivalent to USP Phase G3 ...

婴幼儿配方奶粉作为宝宝的重要营养来源，其成分安全与营养均衡直接关系到婴幼儿的生长发育。近年来，消费者对配方奶粉的关注度持续攀升，对其中的营养成分、污染物残留等指标的要求愈发严格。据市场调研数据显示，2024 ...