A Novel Extraction Method Based on a Reversible Chemical Conversion for the LC/MS/MS Analysis of the Stable Organic Germanium Compound Ge-132

2015 ◽  
Vol 87 (4) ◽  
pp. 2042-2047 ◽  
Author(s):  
Hiroaki Yamaguchi ◽  
Yasuhiro Shimada ◽  
Tomoya Takeda ◽  
Takashi Nakamura ◽  
Nariyasu Mano
Keyword(s):  
Extraction Method ◽  
Chemical Conversion ◽  
Ms Analysis ◽  
Germanium Compound

scholarly journals Occurrence of mycotoxins in selected agricultural and commercial products available in eastern Poland

2021 ◽  
Vol 19 (1) ◽  
pp. 653-664
Author(s):  
Grażyna Kowalska ◽  
Radosław Kowalski
Keyword(s):  
Ochratoxin A ◽  
Aflatoxin B1 ◽  
Extraction Method ◽  
Maximum Allowable Concentration ◽  
Commercial Products ◽  
Ms Analysis ◽  
Rye Flour ◽  
Three Samples ◽  
Aflatoxin B2

Abstract The objective of this study was the estimation of the content of 13 mycotoxins (diacetoxyscirpenol, T-2 toxin, HT-2 toxin, nivalenol, deoxynivalenol, 3-acetyldeoxynivalenol, fusarenone X, aflatoxin B1, aflatoxin B2, aflatoxin G1, aflatoxin G2, ochratoxin A, and zearalenone) in various products from the eastern part of Poland. The content of mycotoxins in the analysed samples was assayed using the extraction method combined with HPLC-MS/MS analysis. We found mycotoxins in 25 of the 92 samples tested (27%). Contamination with mycotoxins was noted most frequently in samples of cereals – 56% – and also in samples of flour and cocoa, in which a content of mycotoxins was noted in 24 and 16% of the samples, respectively. The most frequently identified were the following – deoxynivalenol detected in 18 samples (72%), zearalenone detected in eight samples (32%), toxin HT-2 detected in four samples (16%), ochratoxin A identified in three samples (12%), and toxin T-2 detected in one sample (4%). In one analysed sample of mixed flour and in one analysed sample of wheat and rye flour, the maximum allowable concentration was exceeded in the case of two identified mycotoxins – deoxynivalenol (2,250 μg/kg) and ochratoxin A (15.6 and 17.1 μg/kg).

Development of an extraction method and LC–MS analysis for N-acylated-l-homoserine lactones (AHLs) in wastewater treatment biofilms

2017 ◽  
Vol 1041-1042 ◽  
pp. 37-44 ◽  
Author(s):  
Jinfeng Wang ◽  
Lili Ding ◽  
Kan Li ◽  
Wilhelm Schmieder ◽  
Jinju Geng ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Extraction Method ◽  
Homoserine Lactones ◽  
Ms Analysis

Optimisation of an extraction/leaching procedure for the characterisation and quantification of titanium dioxide (TiO2) nanoparticles in aquatic environments using SdFFF-ICP-MS and SEM-EDX analyses

2017 ◽  
Vol 9 (24) ◽  
pp. 3626-3635 ◽  
Author(s):  
Florian Dutschke ◽  
Johanna Irrgeher ◽  
Daniel Pröfrock
Keyword(s):  
Titanium Dioxide ◽  
Tio2 Nanoparticles ◽  
Environmental Samples ◽  
Extraction Method ◽  
Nano Particles ◽  
Aquatic Environments ◽  
Ms Analysis ◽  
Icp Ms ◽  
Edx Analyses ◽  
Leaching Procedure

A novel, optimized and validated extraction method for engineered TiO2 nano-particles from environmental samples prior to SdFFF-MALS-ICP-MS/MS analysis is presented.

Optimizing the supercritical carbon dioxide extraction of sweet cherry (Prunus avium L.) leaves and UPLC-MS/MS analysis

2020 ◽  
Vol 12 (23) ◽  
pp. 3004-3013
Author(s):  
Huimin Zhang ◽  
Quan Li ◽  
Guang Qiao ◽  
Zhilang Qiu ◽  
Zhuang Wen ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Extraction Method ◽  
Sweet Cherry ◽  
Prunus Avium ◽  
Supercritical Carbon Dioxide Extraction ◽  
Ms Analysis ◽  
Carbon Dioxide Extraction ◽  
Prunus Avium L ◽  
Supercritical Carbon

To study the application value of sweet cherry leaves before abscission, a supercritical carbon dioxide (SFE-CO2) extraction method was established for sweet cherry (Prunus avium L.) leaves.

scholarly journals PRELIMINARY PHYTOCHEMICAL SCREENING AND GC-MS ANALYSIS OF METHANOLIC LEAF EXTRACT OF DRYPETES SEPIARIA (WIGHT & ARN.) PAX. & HOFFIM. FROM SILAMBUR SACRED GROVE, TAMILNADU

2017 ◽  
Vol 4 (2) ◽  
pp. 157-161
Author(s):  
Saravanakumar K
Keyword(s):  
Extraction Method ◽  
Methanol Extract ◽  
Soxhlet Extraction ◽  
Sacred Grove ◽  
Phytochemical Screening ◽  
Plant Materials ◽  
Ms Analysis ◽  
Successive Extraction ◽  
Phytochemical Compounds ◽  
Phytochemical Constituents

Drypetes sepiaria (Wight & Arn.) Pax. & Hoffim a medium sized tree member of Euphorbiaceae was investigated to determine the phytochemical constituents present in various extracts of the leaves through GC-MS analysis. Powdered leaf plant materials were subjected to successive extraction with organic solventssuch as methanol by Soxhlet extraction method. In the present study, GC-MS analysis revealed that a total of 23 different compounds identified by using methanol extract and all the identified compounds were medicinally valuable for the treatment of various human ailments. In addition, all the phytochemical compounds were needed for further investigations on toxicological aspects for the development of new lead of therapeutic interest.

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