Results 121 to 130 of about 7,618 (140)

Determination of Volatile Nitrosamines in Latex Products by HS-SPME–GC–MS

Chromatographia, 2011
Nitrosamines which have been detected in various latex products are carcinogens. The method for determination of volatile nitrosamines in latex products was developed using a combination of headspace solid phase micro-extraction (HS-SPME) and gas chromatography–mass spectrometry (GC–MS).
Di Feng, Luo Liu, Liyuan Zhao, Qingfeng Zhou, Tianwei Tan   +4 more
openaire   +1 more source

Study of Volatiles in Lysimachia parvifolia Flower Using HS-SPME-GC-MS

Chemistry of Natural Compounds, 2014
Lysimachia parvifolia Hemsl. belongs to the Primulaceae family and is widely distributed in Yunnan, Guizhou, Hunan, Jiangxi, and Zhejiang Provinces in China. It is used as traditional chinese medicine to promote blood circulation clear away heat and toxic material, to relieve cough and asthma, to promote diuresis, and to expel stone [1].
Bao-cheng Yang, Zhen-hua Yin, Wenyi Kang
openaire   +1 more source

HS-SPME-GC-MS as an alternative method for NDMA analysis in ranitidine products

Journal of Pharmaceutical and Biomedical Analysis, 2020
N-nitrosodimethylamine (NDMA) is a carcinogenic contaminant that was accidentally discovered in drugs, such as valsartan and ranitidine, and more recently in metformin. Liquid chromatography tandem mass spectrometry (LC-MS/MS) is the method typically used for the analysis of NDMA in ranitidine.
Yahya M. Alshehri, Thamer S. Alghamdi, Fahad S. Aldawsari   +2 more
openaire   +2 more sources

Simple determination of formaldehyde in fermented foods by HS‐SPME‐GC/MS

International Journal of Food Science & Technology, 2011
SummaryWe describe an automatic method to detect formaldehyde (FA) in some fermented foods. This method is based on derivatisation with 2,2,2‐trifluoroethylhydrazine (TFEH) and consecutive headspace solid‐phase micro‐extraction and gas chromatography‐mass spectrometry.
Ho‐Sang Shin, Hyun‐Hee Lim
openaire   +1 more source

Determination of Residual Dimethyl Sulfate in Cephalosporin Using HS-SPME/GC–MS

Journal of Chromatographic Science
Abstract Dimethyl sulfate (DMS) is widely used in manufacturing process but because of its genotoxicity nature, it should be monitored at trace levels (1 μg/mL). It is complicated and difficult to quantify DMS in cephalosporin with traditional method.
openaire   +2 more sources

HS-SPME/GC-MS Determination of Italian Rice Flavour

2011
Quality control of agricultural crops has traditionally been based on human sensory perception; in this context rice is generally considered as a staple food because of its flavour and texture. Food flavour, due to a large number of volatile compounds, influences consumers widely and, when food safety and nutritional contribution are guaranteed ...
BOCCACCI MARIANI, Maurizio, TESTANI, ELENA, GIANNETTI, Vanessa   +2 more
openaire   +1 more source

Analysis of volatiles in Belamcanda chinensis flowers by HS-SPME-GC-MS

Chemistry of Natural Compounds, 2013
The major volatile constituents of B. chinensis flowers were aldehydes (20.4%), ketones (27.3%), esters (15.5%), and fatty acids (15.1%). The main compounds were 6-methyl-5-hepten-2-one (14.6%), isovaleraldehyde (7.9%), methyl hexadecanoate (6.7%), and n-hexadecanoic acid (6.4%). Jian et al. have separated 12 components, and 6 compounds were identified
Jin-mei Wang, Yi-bing Zhang, Wen-Yi Kang
openaire   +1 more source

Method development by GC–ECD and HS-SPME–GC–MS for beer volatile analysis

Food Chemistry, 2015
Two methods for the extraction, identification and quantification of the highest occurrence and lowest perception threshold off-flavours in fifteen different samples of Brazilian Pilsner beers were developed. For this purpose, headspace solid phase microextraction in combination with a gas chromatography coupled to a mass spectrometric detection (HS ...
Gisele C, da Silva, Abner A S, da Silva, Larissa S N, da Silva, Ronoel Luiz de O, Godoy, Luciana C, Nogueira, Simone L, Quitério, Renata S L, Raices   +6 more
openaire   +2 more sources

Analysis of the volatile compounds in Ligusticum chuanxiong Hort. using HS-SPME–GC-MS

Journal of Pharmaceutical and Biomedical Analysis, 2007
A headspace solid-phase microextraction (HS-SPME) method followed by gas chromatography-mass spectrometry (GC-MS) is described for the analysis of volatile compounds in the dry rhizome of Ligusticum chuanxiong Hort. Three types of SPME fibers including PDMS, PDMS-DVB and DVB-CAR-PDMS were investigated and the best extraction was achieved with the mixed
Cong, Zhang, Meiling, Qi, Qinglong, Shao, Shan, Zhou, Ruonong, Fu   +4 more
openaire   +2 more sources

Bestimmung von Furan und Furanderivaten in Lebensmitteln mittels SIDA‐HS‐SPME‐GC/MS

Lebensmittelchemie, 2023
Hanf, Nicole, Kranawetvogl, Andreas, Elsinghorst, Paul W   +2 more
openaire   +1 more source