Differential-pulse polarographic determination of copper and iron in biological and river-water samples as their N-phenylbenzohydroxamic acid complexes by gas-stirred solvent extraction with ethyl acetate

The Analyst ◽  
1991 ◽  
Vol 116 (3) ◽  
pp. 257 ◽  
Author(s):  
Y. Nagaosa ◽  
T. Menjyo ◽  
A. M. Bond
Keyword(s):  
Solvent Extraction ◽  
Ethyl Acetate ◽  
River Water ◽  
Water Samples ◽  
Differential Pulse ◽  
Polarographic Determination ◽  
River Water Samples ◽  
Determination Of Copper

Modified paramagnetic beads in a microfluidic system for the determination of ethinylestradiol (EE2) in river water samples

2010 ◽  
Vol 25 (6) ◽  
pp. 1376-1381 ◽  
Author(s):  
Noelia A. Martínez ◽  
Rudolf J. Schneider ◽  
Germán A. Messina ◽  
Julio Raba
Keyword(s):  
River Water ◽  
Water Samples ◽  
Microfluidic System ◽  
River Water Samples ◽  
Paramagnetic Beads

Spectrophotometry determination of Congo red in river water samples using nanosilver

2012 ◽  
Vol 94 (10) ◽  
pp. 1886-1892 ◽  
Author(s):  
R. Sahraei ◽  
A. Farmany ◽  
S.S. Mortazavi ◽  
H. Noorizadeh
Keyword(s):  
River Water ◽  
Water Samples ◽  
Congo Red ◽  
River Water Samples

The determination of copper by flow injection analysis with flame AAS detection after preconcentration by solvent extraction

1989 ◽  
Vol 54 (10) ◽  
pp. 2683-2691 ◽  
Author(s):  
Vlastimil Kubáň ◽  
Josef Komárek ◽  
Dagmar Čajková
Keyword(s):  
Solvent Extraction ◽  
Flow Injection Analysis ◽  
Water Samples ◽  
Maximum Throughput ◽  
Power Station ◽  
Carrier Medium ◽  
Limit Of Determination ◽  
Continuous Stream ◽  
Determination Of Copper

Trace amounts of copper (QCu = 2 to 900 mg ml-1)) were determined by FIA-FAAS after extraction of the Cu chelate with ammonium pyrrolidine dithiocarboxylate (APDC), present in a concentration of QAPDC = 1 mg ml-1, from 0.2M acetate buffer at pH 5.05 into 4-methyl-2-pentanone. The limit of determination was LQ = 2 ng ml-1 for the injection of 150 μl of the organic phase into a continuous stream of air as the carrier medium. The maximum throughput was about 40 samples per hour. The method was applied to the determination of copper in water samples from power station cooling circuits.

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