Automated on-fiber derivatization with headspace SPME-GC-MS-MS for the determination of primary amines in sewage sludge using pressurized hot water extraction

2011 ◽  
Vol 34 (13) ◽  
pp. 1531-1537 ◽  
Author(s):  
Anna Llop ◽  
Eva Pocurull ◽  
Francesc Borrull
Keyword(s):  
Sewage Sludge ◽  
Hot Water ◽  
Water Extraction ◽  
Primary Amines ◽  
Hot Water Extraction ◽  
Pressurized Hot Water Extraction ◽  
Headspace Spme

scholarly journals Extraction Efficiency of a Commercial Espresso Machine Compared to a Stainless-Steel Column Pressurized Hot Water Extraction (PHWE) System for the Determination of 23 Pharmaceuticals, Antibiotics and Hormones in Sewage Sludge

2019 ◽  
Vol 9 (7) ◽  
pp. 1509 ◽  
Author(s):  
Ola Svahn ◽  
Erland Björklund
Keyword(s):  
Stainless Steel ◽  
Sewage Sludge ◽  
Extraction Efficiency ◽  
Chemical Properties ◽  
Hot Water ◽  
Water Extraction ◽  
Hot Water Extraction ◽  
Pressurized Hot Water Extraction ◽  
Steel Column ◽  
Stainless Steel Column

Two green chemistry extraction systems, an in-house stainless-steel column Pressurized Hot Water Extraction system (PHWE) and a commercially available Espresso machine were applied for analysing 23 active pharmaceutical ingredients (APIs) in sewage sludge. Final analysis was performed on UPLC-MS/MS using two different chromatographic methods: acid and basic. When analysing all 23 APIs in sewage sludge both extraction methods showed good repeatability. The PHWE method allowed for a more complete extraction of APIs that were more tightly bound to the matrix, as exemplified by much higher concentrations of e.g., ketoconazole, citalopram and ciprofloxacin. In total, 19 out of 23 investigated APIs were quantified in sewage sludge, and with a few exceptions the PHWE method was more exhaustive. Mean absolute recoveries of 7 spiked labelled APIs were lower for the PHWE method than the Espresso method. Under acid chromatographic conditions mean recoveries were 16% and 24%, respectively, but increased to 24% and 37% under basic conditions. The difference between the PHWE method and the Espresso method might be interpreted as the Espresso method giving higher extraction efficiency; however, TIC scans of extracts revealed a much higher matrix co-extraction for the PHWE method. Attempts were made to correlate occurrence of compounds in sewage sludge with chemical properties of the 23 APIs and there are strong indications that both the number of aromatic rings and the presence of a positive charge is important for the sorption processes to sewage sludge.

Pressurized Hot Water Extraction Coupled On-line with LC−GC:  Determination of Polyaromatic Hydrocarbons in Sediment

2000 ◽  
Vol 72 (14) ◽  
pp. 3070-3076 ◽  
Author(s):  
T. Hyötyläinen ◽  
T. Andersson ◽  
K. Hartonen ◽  
K. Kuosmanen ◽  
M.-L. Riekkola
Keyword(s):  
Polyaromatic Hydrocarbons ◽  
Hot Water ◽  
Water Extraction ◽  
Hot Water Extraction ◽  
Pressurized Hot Water Extraction ◽  
On Line

scholarly journals Simultaneous extraction of phenolics and essential oil from peppermint by pressurized hot water extraction

2018 ◽  
Vol 56 (1) ◽  
pp. 200-207 ◽  
Author(s):  
Mustafa Çam ◽  
Esma Yüksel ◽  
Hamza Alaşalvar ◽  
Bülent Başyiğit ◽  
Hülya Şen ◽  
...  
Keyword(s):  
Essential Oil ◽  
Hot Water ◽  
Water Extraction ◽  
Hot Water Extraction ◽  
Simultaneous Extraction ◽  
Pressurized Hot Water Extraction
Sign in / Sign up

Export Citation Format

Share Document