scholarly journals Rapid Determination of Residual Quinolones in Honey Samples by Fast HPLC with an On-Line Sample Pretreatment System

2011 ◽  
Vol 02 (02) ◽  
pp. 200-205 ◽  
Author(s):  
Wei Du ◽  
JianGuo Yao ◽  
YueQi Li ◽  
Yuki Hashi
Keyword(s):  
Rapid Determination ◽  
Sample Pretreatment ◽  
On Line ◽  
Line Sample

Liquid Chromatographic Determination of Aflatoxins, Ochratoxin A, and Zearalenone in Grains, Oilseeds, and Animal Feeds by Post-Column Derivatization and On-Line Sample Cleanup

1989 ◽  
Vol 72 (2) ◽  
pp. 336-341 ◽  
Author(s):  
Narong Chamkasem ◽  
William Y Cobb ◽  
George W Latimer ◽  
C Salinas ◽  
B A Clement
Keyword(s):  
Ochratoxin A ◽  
Rapid Determination ◽  
Reverse Flow ◽  
Chromatographic Determination ◽  
Gradient Elution ◽  
Animal Feeds ◽  
On Line ◽  
Liquid Chromatographic ◽  
Line Sample

Abstract A liquid chromatographic method using on-line sample cleanup, reverse flow analytical column loading, gradient elution, and postcolumn derivatization with iodine permits direct, rapid determination of aflatoxins B1, B2, G1, and G2, as well as ochratoxin A and zearalenone. Limits of quantitation are 5 ppb for the aflatoxins and ochratoxin A and 30 ppb for zearalenone. This procedure performs well as a multimycotoxin screen for cereal grains and oilseeds, with more limited success in complete animal feeds.

Rapid determination of fractal structure of bacterial assemblages in wastewater treatment: implications to process optimisation

1998 ◽  
Vol 38 (2) ◽  
pp. 9-15 ◽  
Author(s):  
J. Guan ◽  
T. D. Waite ◽  
R. Amal ◽  
H. Bustamante ◽  
R. Wukasch
Keyword(s):  
Wastewater Treatment ◽  
Fractal Structure ◽  
Structural Information ◽  
Rapid Determination ◽  
Fractal Dimensions ◽  
Structure Information ◽  
Treatment Processes ◽  
On Line ◽  
Bacterial Aggregates

A rapid method of determining the structure of aggregated particles using small angle laser light scattering is applied here to assemblages of bacteria from wastewater treatment systems. The structure information so obtained is suggestive of fractal behaviour as found by other methods. Strong dependencies are shown to exist between the fractal structure of the bacterial aggregates and the behaviour of the biosolids in zone settling and dewatering by both pressure filtration and centrifugation methods. More rapid settling and significantly higher solids contents are achievable for “looser” flocs characterised by lower fractal dimensions. The rapidity of determination of structural information and the strong dependencies of the effectiveness of a number of wastewater treatment processes on aggregate structure suggests that this method may be particularly useful as an on-line control tool.

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