Metal 3D‐printed catalytic jet and flame ionization detection for in situ trace carbon oxides analysis by gas chromatography

2019 ◽  
Vol 42 (17) ◽  
pp. 2826-2834 ◽  
Author(s):  
Ronda Gras ◽  
Yujuan Hua ◽  
Jim Luong ◽  
Peiqi Qiao ◽  
Xiuhan Grace Yang ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Flame Ionization Detection ◽  
Carbon Oxides ◽  
Ionization Detection ◽  
Flame Ionization ◽  
3D Printed

Study of Endocrine Disruptors in the Sediment of a South Brazilian River

2015 ◽  
Vol 1120-1121 ◽  
pp. 862-866
Author(s):  
Irajá Do Nascimento ◽  
Nathália Christine Vieceli ◽  
Michele Schmitz ◽  
Fernanda Glaeser
Keyword(s):  
Gas Chromatography ◽  
Bisphenol A ◽  
Endocrine Disruptors ◽  
River Sediment ◽  
Flame Ionization Detection ◽  
River Contamination ◽  
Ionization Detection ◽  
Flame Ionization ◽  
Organic Extracts ◽  
Ethylhexyl Phthalate

This study investigated the occurrence of di (2-ethylhexyl) phthalate (DEHP) di-n-butylphthalate (DBP) and bisphenol A (BPA) in river sediment. The samples were collected from three selected points and extracted by sonication, using n-hexane and ethanol. The organic extracts were analyzed by gas chromatography with flame ionization detection (GC/FID). DBP and BPA were not detected. The average concentrations of DEHP range from 0.72 (±0.04) to 27.90 (± 3.05) ng g-1 of sediment. The best solvent for the extractions was n-hexane. However ethanol also shows good extraction yields of DEHP. These results showed an important anthropic contribution for the river contamination by endocrine disruptors.

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