Application of homemade double solid phase extraction column for determination of 11 organophosphorus pesticides in Xinhui dried orange peel and its products

2016 ◽  
Vol 34 (8) ◽  
pp. 817 ◽  
Author(s):  
Xiaojun PENG ◽  
Han QIN ◽  
Qijing WEN ◽  
Weihua LIANG ◽  
Youzhen LIANG
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Organophosphorus Pesticides ◽  
Orange Peel ◽  
Extraction Column ◽  
Phase Extraction ◽  
Solid Phase Extraction Column

Rapid and simple determination of nicorandil in rat plasma using a solid-phase extraction column

1990 ◽  
Vol 528 ◽  
pp. 509-516 ◽  
Author(s):  
Yutaka Gomita ◽  
Katsushi Furuno ◽  
Kohei Eto ◽  
Tamotsu Fukuda ◽  
Yasunori Araki ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Rat Plasma ◽  
Extraction Column ◽  
Phase Extraction ◽  
Solid Phase Extraction Column

Determination of ochratoxin A in wheat after clean-up through a DNA aptamer-based solid phase extraction column

2011 ◽  
Vol 127 (3) ◽  
pp. 1378-1384 ◽  
Author(s):  
Annalisa De Girolamo ◽  
Maureen McKeague ◽  
J. David Miller ◽  
Maria C. DeRosa ◽  
Angelo Visconti
Keyword(s):  
Solid Phase Extraction ◽  
Ochratoxin A ◽  
Solid Phase ◽  
Dna Aptamer ◽  
Extraction Column ◽  
Phase Extraction ◽  
Solid Phase Extraction Column

Liquid Chromatographic Determination of the Cyanobacterial Toxin β-N-Methylamino-L-Alanine in Algae Food Supplements, Freshwater Fish, and Bottled Water

2009 ◽  
Vol 72 (8) ◽  
pp. 1769-1773 ◽  
Author(s):  
PETER M. SCOTT ◽  
BARBARA NIEDZWIADEK ◽  
DOROTHEA F. K. RAWN ◽  
BEN P.-Y. LAU
Keyword(s):  
Solid Phase Extraction ◽  
Cation Exchange ◽  
Freshwater Fish ◽  
Solid Phase ◽  
Bottled Water ◽  
Extraction Column ◽  
Phase Extraction ◽  
Solid Phase Extraction Column ◽  
Strong Cation Exchange

β-N-Methylamino-l-alanine (BMAA) is a neurotoxin originally found in cycad seeds and now known to be produced by many species of freshwater and marine cyanobacteria. We developed a method for its determination in blue-green algae (BGA) food supplements, freshwater fish, and bottled water by using a strong cation-exchange, solid-phase extraction column for cleanup after 0.3 M trichloroacetic acid extraction of BGA supplements and fish. Bottled water was applied directly onto the solid-phase extraction column. For analysis of carbonated water, sonication and pH adjustment to 1.5 were needed. To determine protein-bound BMAA, the protein pellet left after extraction of the BGA supplement and fish was hydrolyzed by boiling with 6 M hydrochloric acid; BMAA was cleaned up on a C18 column and a strong cation-exchange, solid-phase extraction column. Determination of BMAA was by liquid chromatography of the fluorescent derivative formed with 9-fluorenylmethyl chloroformate. The method was validated by recovery experiments using spiking levels of 1.0 to 10 μg/g for BGA supplements, 0.5 to 5.0 μg/g for fish, and 0.002 μg/g for bottled water; mean recoveries were in the range of 67 to 89% for BGA supplements and fish, and 59 to 92% for bottled water. Recoveries of BMAA from spiked extracts of hydrolyzed protein from BGA supplements and fish ranged from 66 to 83%. The cleanup developed provides a useful method for surveying foods and supplements for BMAA and protein-bound BMAA.

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