+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Trace analysis for organothiophosphate agricultural chemicals by high-performance liquid chromatography-photolysis-electrochemical detection



Trace analysis for organothiophosphate agricultural chemicals by high-performance liquid chromatography-photolysis-electrochemical detection



Journal of Agricultural and Food Chemistry 32: 2-8



Organic thiophosphate agricultural chemicals, malathion, parathion and others, can be analyzed by the newer method of high-performance liquid chromatography (HPLC) with on-line photolysis (hv), followed by electrochemical detection (EC) using single- or dual-electrode approaches for the species generated. This approach, HPLC-hv-EC, was applied to .apprx. 20 thiophosphates, most of which were widely used agriculturally and for which trace residue levels were routinely monitored. Dual-electrode response ratios were determined for all analytes, along with minimum detection limits (MDL) in many cases. These approaches were also used for the quality control evaluation of commercial formulations by flow injection analysis (FIA) with hv-EC and no HPLC separations. Wheat middling extracts were analyzed by the commonly used gas chromatography (GC) flame photometric detection (FPD) method of residue analysis, and by HPLC-hv-EC. These comparative studies indicate that the newer method was reproducible, accurate, precise and reliable. Standard additions were applied to wheat middling extracts, and the quantitative results were compared with the external standard method.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 018188254

Download citation: RISBibTeXText

DOI: 10.1021/jf00123a050


Related references

Trace analysis of organo thio phosphate agricultural chemicals by high performance liquid chromatography photolysis electrochemical detection. Journal of Agricultural & Food Chemistry 32(3): 622-628, 1984

Analysis for penicillins and cefoperazone by high performance liquid chromatography photolysis electrochemical detection. Journal of Pharmaceutical & Biomedical Analysis 4(1): 83-94, 1986

Trace analysis of biological substances by high-performance liquid chromatography with electrochemical detection. Yakugaku Zasshi 111(4-5): 225-233, 1991

Optimization in photochemical reaction detection application to high performance liquid chromatography photolysis electrochemical detection. Journal of Chromatography 481: 121-134, 1989

Electrochemical detection of proteins in high-performance liquid chromatography using on-line, postcolumn photolysis. Analytical Biochemistry 197(2): 377-383, 1991

Optimization of two methods for the analysis of hydrogen peroxide: high performance liquid chromatography with fluorescence detection and high performance liquid chromatography with electrochemical detection in direct current mode. Journal of Chromatography. a 1217(48): 7564-7572, 2011

Determination of deoxynivalenol (DON, vomitoxin) in wheat by high-performance liquid chromatography with photolysis and electrochemical detection (HPLC-hv-EC). Journal of Chromatographic Science 28(2): 76-82, 1990

Trace analysis of airborne aromatic isocyanates and related aminoisocyanates and diamines using high-performance liquid chromatography with ultraviolet and electrochemical detection. Journal of Chromatography 435(3): 469-481, 1988

Determination of aspoxicillin in broncho-alveolar lavage fluid by high-performance liquid chromatography with photolysis and electrochemical detection. Journal Of Chromatography Biomedical Applications. 615(1): 180-185, 1993

Determination of nitrite and nitrate by reversed phase high performance liquid chromatography using on line post column photolysis with uv absorbance and electrochemical detection. Journal of Chromatography 452: 295-308, 1988

Measurement of trace aromatic amines in seawater using high performance liquid chromatography with electrochemical detection. Journal of Chromatography 348(1): 265-274, 1985

Determination of nitrite and nitrate by reversed-phase high-performance liquid chromatography using on-line post-column photolysis with ultraviolet absorbance and electrochemical detection. Journal of chromatography, 452(452): 295-308, 1988

Detection of the oxidative products of 3-hydroxykynurenine using high-performance liquid chromatography-electrochemical detection-ultraviolet absorption detection-electron spin resonance spectrometry and high-performance liquid chromatography-electrochemical detection-ultraviolet absorption detection-mass spectrometry. Journal Of Chromatography A. 773(1-2): 23-31, 1997

Recent advances in high-performance liquid chromatographic analysis of small molecules. Application of high-performance liquid chromatography with electrochemical detection to the study of neurotransmitters in vivo. Biochemical Society Transactions 13(6): 1058-1061, 1985

Improved electrochemical detection of diuretics in high-performance liquid chromatographic analysis by postcolumn on-line photolysis. Journal of Chromatography A 709(2): 257-264, 1995