PHYSICO-CHEMICAL SPECIATION AND TRANSFORMATION REACTIONS OF PARTICULATE ATMOSPHERIC NITROGEN AND SULPHUR COMPOUNDS

Author(s):  
ROY M. HARRISON ◽  
W.T. STURGES
2020 ◽  
Author(s):  
Agathe Laës ◽  
Gabriel Dulaquais ◽  
Alexandre Hemery ◽  
Romain Davy ◽  
Matthieu Waeles ◽  
...  

Foods ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 445 ◽  
Author(s):  
Niculina M. Mădaş ◽  
Liviu A. Mărghitaş ◽  
Daniel S. Dezmirean ◽  
Victorita Bonta ◽  
Otilia Bobiş ◽  
...  

Honey composition and color depend greatly on the botanical and geographical origin. Water content, water activity and color of 50 declared acacia samples, collected from three different geographical zones of Romania, together with chromatographic determination of sugar spectrum were analyzed. A number of 79 volatile compounds from the classes of: Alcohols, aldehydes, esters, ketones, sulphur compounds, aliphatic hydrocarbons, nitrogen compounds, carboxylic acids, aromatic acids and ethers were identified by solid-phase micro-extraction and gas-chromatography mass spectrometry. The overall volatile profile and sugar spectrum of the investigated honey samples allow the differentiation of geographical origin for the acacia honey samples subjected to analysis. The statistical models of the chromatic determination, physicochemical parameters and volatile profile was optimal to characterize the honey samples and group them into three geographical origins, even they belong to the same botanical origin.


Fuel ◽  
2015 ◽  
Vol 162 ◽  
pp. 84-90 ◽  
Author(s):  
Pravesh Chandra Shukla ◽  
Tarun Gupta ◽  
Nitin Kumar Labhsetwar ◽  
Avinash Kumar Agarwal

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