Sensitive detection of biacetyl in liquid chromatography using time-resolved sensitized phosphorescence

1985 ◽  
Vol 57 (9) ◽  
pp. 1815-1818 ◽  
Author(s):  
Robert A. Baumann ◽  
Cees. Gooijer ◽  
Nel H. Velthorst ◽  
Roland W. Frei
Keyword(s):  
Liquid Chromatography ◽  
Sensitive Detection ◽  
Time Resolved ◽  
Sensitized Phosphorescence

ICP-AES as a Multiple Element Detector for Metal Chelates Separated by HPLC

1981 ◽  
Vol 35 (6) ◽  
pp. 525-531 ◽  
Author(s):  
David M. Fraley ◽  
Dennis A. Yates ◽  
Stanley E. Manahan ◽  
David Stalling ◽  
James Petty
Keyword(s):  
High Pressure ◽  
Liquid Chromatography ◽  
Trace Metals ◽  
Single Channel ◽  
Nitrilotriacetic Acid ◽  
Uv Absorbance ◽  
Time Resolved ◽  
Copper Zinc ◽  
Calcium And Magnesium

ICP-AES was used for the simultaneous multiple element detection of trace metals species separated by high-pressure liquid chromatography (HPLC). The technique is demonstrated for the determination of nitrilotriacetic acid (NTA) and ethylenedia-minetetraacetic acid (EDTA) chelates of copper, zinc, calcium, and magnesium. Multi-element chromatograms were obtained using a 32-channel polychromator programmed to perform a series of time-resolved intensity integrations. Data were retrieved channel-by-channel and plotted in histographic form. Comparison with UV absorbance and single-channel ICP-AES tracings reveals that the histograms reflect reliable chromatographic data. Linearity and precision of the system were found to be good in the 20 to 2000 ng range.

Eu3+‐labeled IgG‐based time‐resolved fluoroimmunoassay for highly sensitive detection of aflatoxin B1in feed

2017 ◽  
Vol 98 (2) ◽  
pp. 674-680 ◽  
Author(s):  
Xiaofei Hu ◽  
Jingjing Yao ◽  
Fangyu Wang ◽  
Mengqi Yin ◽  
Yaning Sun ◽  
...  
Keyword(s):  
Sensitive Detection ◽  
Time Resolved ◽  
Highly Sensitive ◽  
Highly Sensitive Detection

Time-resolved quenched phosphorescence detection of chromate in water samples using paired-ion reversed phase high performance liquid chromatography

1987 ◽  
Vol 65 (5) ◽  
pp. 965-969 ◽  
Author(s):  
Robert A. Baumann ◽  
Marry Schreurs ◽  
Cees Gooijer ◽  
Nel H. Velthorst ◽  
Roland W. Frei
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Water Samples ◽  
High Performance ◽  
Limit Of Detection ◽  
Tap Water ◽  
Reversed Phase ◽  
Time Resolved ◽  
Potential Applicability ◽  
Surface Water Samples

The feasibility of time-resolved quenched phosphorescence as a detection method for chromate based on paired-ion reversed phase high performance liquid chromatography is shown. After separation detection is achieved by monitoring the time-resolved phosphorescence signal of biacetyl at 515 nm. Optimization of the time-resolution parameters of the luminescence detector results in a limit of detection of 1.4 × 10−7 M (2 ng on column) for chromate standard solutions. The linearity of the method is three orders of magnitude. Chromatograms of tap water and surface water samples spiked with chromate show the potential applicability of the method for real samples.

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