Anodic Adsorptive Stripping Voltammetric Determination of Atrazine in Spiked Soil Samples with a Gold Microelectrode

Quantitative determination of combinations of the agrochemicals: atrazine, propham, chlorpropham, diflubenzuron, α-cypermethrin and tetramethrin from spiked soil is reported. Method involves ultrasonic extraction of agrochemicals with acetone, separation of samples by means of reverse-phase thin-layer chromatography and quantification by slit-scanning densitometry. Computer-assisted optimisation was used to select the optimum mobile phase composition. Apparent recoveries of agrochemicals from spiked soil were: 90.3±8.5 for chlorpropham, 79.3±10.3 for propham, 102±2.4 for atrazine, 100.6±5.4 for α-cypermethrin, 103.0±4.1 for tetramethrin and 98.3±4.9 for diflubenzuron.

Download Full-text

Determination of Benzimidazole Fungicides in Soil Samples Using Microwave-Assisted Micellar Extraction and Liquid Chromatography with Fluorescence Detection

Journal of AOAC International ◽

10.1093/jaoac/89.5.1403 ◽

2006 ◽

Vol 89 (5) ◽

pp. 1403-1409 ◽

Cited By ~ 12

Author(s):

Radoslav Halko ◽

Carolina PadrÓn Sanz ◽

Zoraida Sosa Ferrera ◽

JosÉ Juan Santana RodrÍguez

Keyword(s):

Liquid Chromatography ◽

Fluorescence Detection ◽

Soxhlet Extraction ◽

Soil Samples ◽

Benzimidazole Fungicides ◽

Microwave Assisted ◽

Spiked Soil ◽

Assisted Extraction ◽

Direct Fluorescence

Abstract A simple and fast analytical method was developed for the determination of benzimidazole fungicides (benomyl, carbendazim, thiabendazole, and fuberidazole) in soil samples. The analytes were extracted from the soil samples by means of conventional microwave-assisted extraction, using the non-ionic surfactants polyoxyethylene 10 lauryl ether (POLE) and oligoethylene glycol monooalkyl ether (Genapol X-080) as extractants. Determinations were made by using liquid chromatography with direct fluorescence detection. The use of an analytical column Symmetry C-18 offered short retention times of analytes without the need of any pH regulators with mobile phase methanolwater (50 + 50, v/v). The best results were obtained using 5% (v/v) POLE as extractant with recoveries of the fungicides in spiked soil samples between 71 and 105%. The results were compared with those obtained when Soxhlet extraction was applied to the same soil samples.

Download Full-text

Determination of agrochemical combinations in spiked soil samples

Water Science & Technology ◽

10.1016/s0273-1223(98)00254-6 ◽

1998 ◽

Vol 37 (8) ◽

Cited By ~ 8

Keyword(s):

Soil Samples ◽

Spiked Soil

Download Full-text

Direct Voltammetric Determination of Total Iron with a Gold Microelectrode Ensemble

Electroanalysis ◽

10.1002/elan.201200417 ◽

2012 ◽

Vol 24 (11) ◽

pp. 2061-2069 ◽

Cited By ~ 11

Author(s):

E. A. Zakharova ◽

E. E. Elesova ◽

G. N. Noskova ◽

M. Lu ◽

R. G. Compton

Keyword(s):

Total Iron ◽

Voltammetric Determination ◽

Gold Microelectrode

Download Full-text

Voltammetric Determination of 1-Naphthylacetic Acid in Soil Samples Using Carbon Nanotubes Film Modified Electrode

Analytical Letters ◽

10.1081/al-120021534 ◽

2003 ◽

Vol 36 (8) ◽

pp. 1523-1534 ◽

Cited By ~ 7

Author(s):

Shaofang Lü

Keyword(s):

Carbon Nanotubes ◽

Modified Electrode ◽

Soil Samples ◽

Voltammetric Determination ◽

Naphthylacetic Acid

Download Full-text

Improved Anodic Stripping Voltammetric Determination of Arsenic Using Nanoporous Gold Microelectrode

ECS Meeting Abstracts ◽

10.1149/ma2015-01/40/2120 ◽

2015 ◽

Keyword(s):

Nanoporous Gold ◽

Voltammetric Determination ◽

Anodic Stripping ◽

Gold Microelectrode

Download Full-text

Colorimetric Determination of Paraquat Residues in Soil and Water

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/57.1.202 ◽

1974 ◽

Vol 57 (1) ◽

pp. 202-204 ◽

Cited By ~ 2

Author(s):

John D Pope ◽

Jacquelyn E Benner

Keyword(s):

Water Samples ◽

Colorimetric Method ◽

Soil Samples ◽

Colorimetric Determination ◽

Soil Extraction ◽

Spiked Soil ◽

Large Numbers ◽

Extraction Step ◽

Soil And Water

Abstract A modified colorimetric method is presented for the determination of paraquat in agricultural arunoff samples. The soil extraction step of existing methods is shortened, making the method more suitable for routine analysis of large numbers of samples. Recoveries from spiked soil samples (0.5–5.0 ppm) and water samples (0.1–2.0 ppm) averaged 91-98 and 80-94%, respectively.

Download Full-text