Phosphorus-31 Nmr: Manufacturing Control and Product Composition of Phosphate Pesticides

Wayne, Richard S; Stockton, Gerald W.; Wilson, Lester A.

doi:10.1016/b978-0-08-029225-0.50067-9

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…Post-blast residue PB1 showed the signal at δ 4.58 ppm (singlet; 8H), and after integration of the area of the peak gives the average concentration of 0.91 mM (287.76 ppm). In contrast, post-blast residue PB3 (TNT) showed the signal at δ 2.76 ppm and δ 8.84 ppm for methyl and aromatic protons, respectively, in- tegrating the area of the signal showed the average concentration of 0.12 mM (29.52 ppm) in the sample (Figure 8, 9). ERETIC data and parameters are summarised in Table 4.…”

Section: Eretic (Electronic To Access In Vivo Concentration) Methodsmentioning

confidence: 99%

“…Another significant advantage of qNMR is that it allows accurate quantification without using any stringent condition of using chemical reference standards as required during chromatography studies such as HPLC, GC, UPLC. The potential of NMR spectroscopy as a quantitative tool was illustrated more than 20 years ago [7][8][9]. Previous reports have typically exploited 1 H [10][11][12], 13 C [13][14][15], 31 P [16][17][18] and other nuclei [19][20] in qNMR.…”

Section: Introductionmentioning

confidence: 99%

“…Previous reports have typically exploited 1 H [10][11][12], 13 C [13][14][15], 31 P [16][17][18] and other nuclei [19][20] in qNMR. The unbiased nature of qNMR and the existence of NMR active nuclei present in post-blast debris of unburnt explosives such as 1 H, 15 N, and 13 C are more advantageous than traditional MS-based methods for determining the absolute quantification [9][10][11]. Also, the accuracy and precision of NMR signal intensity measurements have been reviewed [21].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Post‐Blast Residues in Soil Sample by ¹H qNMR Spectroscopy

Dalal

Munjal²,

Gangwar

et al. 2022

Propellants Explo Pyrotec

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Analysing active chemical components of explosives, propellants and post-blast residues have been challenging as it involves massive complexity. The increased use of energetics in various activities like military conflicts, terrorist's activities, and accidental explosions has made the task even more difficult for forensic scientists and environmentalists to analyse post-blast debris. The present studies reported the quantitative analysis of energetic materials present in post-blast soil by 1 H qNMR. The three methods have been used for quantitative studies, i. e. calibration curve method, co-axial stem insert method, and ERETIC method (Electronic to Access In Vivo Concentration). All three methods have been compared with the studies of post-blast residues of explosives such as PETN, Tetryl and TNT. The technique is selective, sensitive, rapid, reliable, and reproduce the result with good accuracy. The study merely requires a nuclear magnetic resonance spectrometer (400 MHz or 500 MHz) as an instrument.

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Section: Eretic (Electronic To Access In Vivo Concentration) Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Post‐Blast Residues in Soil Sample by ¹H qNMR Spectroscopy

Dalal

Munjal²,

Gangwar

et al. 2022

Propellants Explo Pyrotec

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“…Lu and co-workers (Lu et al, 1985) correlated 31P NMR data to toxicity values for a number of pesticides. Wayne, et al (1983) used 31P NMR as a probe to monitor the manufacture and stability of pesticides. The application of 31P NMR to the quantitation of pesticides was carried out by Guriy and Ritchey (1976), and determination of enantiomeric ratios of chiral phosphate ester pesticides was done by Lu and co-workers (Lu et al, 1986).…”

Section: Introductionmentioning

confidence: 99%

Application of nuclear magnetic resonance spectroscopy to the identification and quantitation of pesticide residues in soil

Krolski¹,

Bosnak²,

Murphy³

1992

J. Agric. Food Chem.

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The application of high-resolution Fourier-transform nuclear magnetic resonance (NMR) spectroscopy to the identification of metabolites of the phosphorodithioate ester pesticide sulprofos (Bolster) was investigated. While differentiation between the various metabolites using either or 13C NMR was unsuccessful, 31P NMR proved to be an exquisitely sensitive probe for these compounds. Treatment of soil samples with sulprofos at a concentration of 7.4 ppm, followed by incubation for up to 90 days, led to the formation of two major metabolites. The residues were extracted, characterized, and quantitated using 31P NMR. Use of 14C radiolabeled material and analysis of extracts by high-performance liquid chromatography and liquid scintillation counting confirmed the results obtained by 31P NMR.

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