是工业园区环境管理的一把利器.%In order to solve the prominent problems of odor complaints and excessive ozone in the industrial park environmental management,the online gas chromatography/mass spectrometry (GC/MS ) tech
Fipronil desulfinyl and sulfone have been reported as the principle metabolites which have significant mammalian toxicity than fipronil itself and higher environmental persistency compared to the other two metabolites (Mandal and Singh, 2014; Cheng et al., 2014). However, the rate and route of ...
There is a long-standing concern for the lack of reproducibility of the untargeted metabolomic approaches used in pharmaceutical research. Two types of human plasma samples were split into two batches and analyzed in two individual labs for untargeted GC–MS metabolomic profiling. The two labs used ...
studies. The flavonoids were resolved into 4 bands (S1-S4), where S3 was the most active and its GC-MS analysis revealed the presence of a number of compounds, where Bicyclo [2.2.1]heptan-2-one,1,7,7-trimethyl-, (1S)- was the most abundant. Conclusions These findings suggest that th...
The SCION TQ and SCION SQ both feature the industry’s first “lens-free” design which has truly revolutionized the ease-of-use for the gas chromatographer. The new SCION instruments are more sensitive, more productive and save significantly more bench...
zero gives a signal-to-noise ratio in the thousands, but that has no correlation to the system’s true performance,” Sheehan said. “It is time for ultra-low noise MS systems to use statistical detection criteria that are similar to the statistics that...
adianthifolia have been used for a number of folkloric applications to treat such diseases such as skin and respiratory tract infections, headaches, sinusitis, and malaria, as well as use as analgesic, purgative, anti-inflammatory, and as a psychotic principle [3,4]. Pterocarpus genus is ...
Functional Principle In a gas chromatographic (GC) column, compounds are separated in retention time according to their chemical properties. In contrast to classical GC, spectral runs in less than one minute are possible with the IONICON fastGC module, providing near real-time data. The fastGC ...
AN EXACT MASS GC-MS METABOLOMIC STUDY OF NITROGEN STARVATION IN ARABIDOPSIS THALIANA Stephanie Boutet2, Hilary Major1, Joanne Cardwell1, Anne Krapp2, Patrice Meinmoun3, Delphine Hourcade3, Steve Preece1 1Waters Corporation, Manchester, UK; 2INRA, Verailles, France; 3University Paris-Sud, Orsay...
The results of the analysis of monomethylmercury (MMHg) of a sediment reference material show that isotope ratio precision of ICP-MS instruments equipped with quadrupole, sector-field, and time-of-flight mass analyzers is similar within a broad range of peak signal-to-noise ratio when analyzing ...