Results 1 to 10 of about 1,177 (101)
Zhongguo youzhi, 2023 为‘凤丹’牡丹籽油风味研究提供参考，采用固相微萃取技术结合气相色谱-质谱法（SPME-GC-MS）测定‘凤丹’牡丹籽油挥发物组成。在单因素试验基础上，根据Box-Behnken试验设计原理，以‘凤丹’牡丹籽油挥发物总峰面积为响应值，以样品量、平衡时间、萃取时间、萃取温度为因素进行响应面试验，对‘凤丹’牡丹籽油挥发物的固相微萃取条件进行优化，然后采用SPME-GC-MS测定‘凤丹’牡丹籽油的挥发物组成及相对含量。结果表明：固相微萃取‘凤丹’牡丹籽油挥发物的最佳条件为样品量4.0 g（15 mL样品瓶 ...
帅佳琪1，吕长平2,3，秧拯民1，石杨1，毛咪1，江莉娜1，康敏1 SHUAI Jiaqi1, LYU Changping2,3, YANG Zhengmin1, SHI Yang1, MAO Mi1, JIANG Lina1, KANG Min1
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Analysis of Odor-Active Compounds of Soy Sauce by Mono Trap Method(基于Mono Trap方法对酱油气味活性成分的分析) [PDF]
Shipin kexue jishu xuebao, 2021 Monolithic material sorptive extraction (Mono Trap) coupled with gas chromatography-olfactometry-mass spectrometry (GC-O-MS) method was used to extract and analyze the odor-active compounds of high-salt liquid-state fermented soy sauce.
WANG Xiaojun(王逍君) +2 more
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Zhongguo youzhi, 2022 为稳定可靠地分析油茶籽油中多环芳烃，建立了分子印迹固相萃取-气相色谱-串联质谱测定油茶籽油中16种多环芳烃方法。样品经正己烷溶解后，分别采用反相固相萃取HLB小柱、弗罗里硅土小柱和分子印迹固相萃取小柱对16种多环芳烃进行净化。以回收率和基质效应为考察指标评估3种固相萃取柱的净化，在此基础上，对净化液进行低温低速氮吹浓缩，多反应监测扫描模式下进行气相色谱-串联质谱检测，外标法定量。结果表明：分子印迹固相萃取小柱对16种多环芳烃的净化效果最佳；16种多环芳烃在质量浓度1～50 μg/L范围内线性关系良好 ...
钟冬莲1，喻宁华2，王玫鹃1，莫润宏1，段俊敏2，汤富彬1 ZHONG Donglian1,YU Ninghua2,WANG Meijuan1, MO Ｒunhong1, DUAN Junmin2, TANG Fubin1
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Fast Determination of 52Pesticide Residues in Grape Wine by DSPE-GC/MS(DSPE-GC/MS快速检测葡萄酒中52种农药残留) [PDF]
Shipin kexue jishu xuebao, 2014 A fast method was developed for determination of 52pesticides in grape wine by using DSPE and GC-MS. The samples were first extracted using acetonitrile with the addition of vibration and ultrasound.
CHEN Shiheng(陈士恒) +4 more
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Determination of 16 EU Priority PAHs in Smoked and Roasted Meat Products by Dispersive Solid-Phase Extraction with Ultra-Low Temperature Liquid-Liquid Microextraction Combined with Gas Chromatography-Mass Spectrometry(分散固相萃取-超低温液液微萃取-气相色谱质谱法测定烟熏及烧烤肉制品中16种欧盟优控多环芳烃) [PDF]
Shipin kexue jishu xuebao, 2021 A fast and low-cost determination method of 16 EU (European Union) priority polycyclic aromatic hydrocarbons (PAHs) in smoked and roasted meat products by dispersive solid-phase extraction with ultra-low temperature liquid-liquid microextraction combined
TONG Lanyan(童兰艳) +5 more
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Review on Analytical Methods of Pesticide Residues in Tea(茶叶中农药残留分析技术研究进展) [PDF]
Shipin kexue jishu xuebao, 2017 Based on the recent published literatures, this paper briefly states the commonly used pesticides in China’s tea production, compares their domestic and international maximum residue limits, summarizes the relevant main detection techniques, concludes ...
LIU Tengfei(刘腾飞) +3 more
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Zhongguo youzhi, 2023 为了提高浓香葵花籽油风味物质的萃取效果及对其气味活性物质进行鉴定，对顶空固相微萃取（HS-SPME）的萃取条件进行优化，并结合气相色谱-嗅闻-质谱技术（GC-O-MS）对浓香葵花籽油的气味活性物质进行分离和鉴定。结果表明，HS-SPME萃取浓香葵花籽油的最佳条件为样品3 g，DVB/CAR/PDMS萃取头长度2 cm，萃取温度70 ℃，萃取时间50 min。通过GC-O-MS分析，在浓香葵花籽油（160 ℃烘烤葵花籽仁25 min）中共鉴定出63种挥发性物质，其中12种具有气味活性，包括4种吡嗪类 ...
尹文婷，师瑞，马宇翔，王岸娜，汪学德 YIN Wenting, SHI Rui, MA Yuxiang, WANG Anna, WANG Xuede
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Liquid-Liquid Extraction Technology for Aroma and Flavor Compounds in Traditional Fermented Beverages and Seasonings(传统发酵饮料与调味品中风味物质的液液萃取技术) [PDF]
Shipin kexue jishu xuebao, 2023 The aroma and flavor of traditional fermented beverages and seasonings is an important aspect of determining their quality. The use of modern flavor chemistry theory and methods to study their aroma and flavor has been recognized by the industry.
FAN Wenlai(范文来)
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Developmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019 目的 本国际临床指南由欧洲残疾儿童学会（the European Academy of Childhood Disability，EACD）牵头制定，旨在解决发育性协调障碍（developmental coordination disorder，DCD）的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题，通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础，以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类，最终转化为指南建议。并由国际 ...
Jing Hua +6 more
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Zhongguo youzhi, 2023 为快速测定食用油中的多环芳烃，建立全自动分子印迹固相萃取高效液相色谱法测定食用油中10种多环芳烃的分析方法。将样品用正己烷溶解，以2 mL正己烷为淋洗液，二氯甲烷为洗脱剂，经全自动分子印迹固相萃取柱净化，氮吹后定容进高效液相色谱仪（配荧光检测器）检测。结果表明：所建方法线性关系良好，检出限为0.1~1.3 μg/kg，定量限为0.3~4.0 μg/kg；方法的准确度良好，精密度高，10种多环芳烃在玉米油和花生油基质中的加标回收率为79.2%~114.3%，相对标准偏差为0.4%~5.7 ...
张冰1，朱琳1，李丽1，张蕊1，郭宝元1，邵懿2，王松雪1 ZHANG Bing1, ZHU Lin1, LI Li1, ZHANG Rui1, GUO Baoyuan1, SHAO Yi2, WANG Songxue1
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