University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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Fenthion

  • IUPAC Name: dimethoxy-(3-methyl-4-methylsulfanylphenoxy)-sulfanylidene-$l^{5}-phosphane
  • Molecular Formula: C10H15O3PS2
  • CAS Registry Number: 55-38-9
  • InChI: InChI=1S/C10H15O3PS2/c1-8-7-9(5-6-10(8)16-4)13-14(15,11-2)12-3/h5-7H,1-4H3
  • InChI Key: PNVJTZOFSHSLTO-UHFFFAOYSA-N

@ ChemSpider@ NIST@ PubChem

Citations 3

"Determination Of The Pesticides Fenthion And Fenitrothion By Flow Injection With Amperometric Detection"
Anal. Chim. Acta 1988 Volume 209, Issue 1-2 Pages 205-212
J. Hernandez Mendez, R. Carabias Martinez, F. Becerro Dominguez and J. I. Jimenez Jimenez

Abstract: The pesticides were dissolved in carrier solution, viz, 0.06 M acetic acid - 0.04 M Na acetate in aqueous 20% methanol. Fenthion(I) and fenitrothion(II) were determined at +1.3 and -0.9 V vs. Ag - AgCl, respectively, by using a vitreous-carbon working electrode and a gold auxiliary electrode. In the determination of II, interference by O in the carrier solution was prevented with a zinc column. For I, response was rectilinear from 0.16 to 16 µM, with a detection limit of 0.15 µM and a coefficient of variation (n = 10) of 1.7% for 6.64 µM. For II, response was rectilinear from 8 to 80 µM, with a detection limit of 0.52 µM and coefficient of variation (n = 10) of 0.9% for 77.6 µM.
Amperometry Electrode Interferences Optimization

"Continuous-flow Extraction Of Organophosphorus Pesticides Coupled Online With High Performance Liquid Chromatography"
Anal. Chim. Acta 1988 Volume 212, Issue 1-2 Pages 123-131
Adriana Farran and Joan de Pablo, Santiago Hernández

Abstract: A Y-piece segmenter was used to introduce an aqueous sample into a stream of heptane flowing through an extraction system constructed from 0.5-mm i.d. PTFE tubing. After passage through a 4-m mixing coil and a phase separator containing a 0.5 µm PTFE membrane, the heptane extract was analyzed by HPLC on a Brownlee RP-18 column (22 cm x 4 mm) with aqueous 80% methanol as mobile phase (1 mL min-1) and detection at 220 nm. In the determination of fenthion(I), e.g., with a sample-to-heptane volume ratio of 4:1 and a total flow rate during extraction of 2.5 mL min-1, calibration graphs based on peak area were rectilinear for 0.5 to 4 or 6 to 22 mg L-1 of I; the detection limit was 0.09 mg L-1 of I. The method was also applicable to azinphos-methyl (II; conditions given). In the determination of 4 mg L-1 of I and 7 mg L-1 of II the coefficient of variation were 5.3 and 3.4% (n = 10), respectively. The sampling rate was 15 h-1. In the determination of 7.8 mg L-1 of II and 8.7 mg L-1 of I, there was no interference from 8, 8, 6.5 or 8.4 mg l-1, respectively, of phenol, o-cresol, trichlorfon or parathion-methyl.
HPLC Sample preparation Extraction Interferences Post-column derivatization Teflon membrane Phase separator

"Evaluation Of Combined Flow Injection High Performance Liquid Chromatography For The Determination Of Three Organophosphorus Pesticides In Liquid Wastes"
Int. J. Environ. Anal. Chem. 1987 Volume 30, Issue 1-2 Pages 59-68
Farran, A.;De Pablo, J.

Abstract: In development of the method, solution containing azinphos-methyl, diazinon and fenthion were analyzed by HPLC with introduction by continuous or normal flow injection analysis. The HPLC was carried out on a column (12 cm x 4 mm) of Nucleosil-C18 with aqueous 60% acetonitrile as mobile phase (1 mL min-1) and detection at 220 nm. The limit of detection was 0.5 mg l-1. Removal of pesticides from liquid waste by adsorption on active carbon was also studied.
Waste HPLC Spectrophotometry Activated carbon