Estimation of Ammonium Picrate in Wastes from Bomb-and Shell-Loading Plants. Some Reactions of Ammonium Picrate in Water and Sewage

Ruchhoft, C. C.; Norris, Francis I.

doi:10.1021/i560156a010

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…Although these chemicals were synthesized and dumped mainly during the Second World War, they are still present at high concentrations, indicating their resistance to microbial metabolism. Ammonium 2,4,6-trinitrophenoxide (ammonium picrate) was also used by the military as an explosive (12). Consequently, picric acid has also been found as a contaminant in soil and groundwater.…”

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confidence: 99%

Initial hydrogenation during catabolism of picric acid by Rhodococcus erythropolis HL 24-2

Lenke

Knackmuss

1992

Appl Environ Microbiol

117

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Rhodococcus erythropolis HL 24-2, which was originally isolated as a 2,4-dinitrophenol-degrading bacterium, could also utilize picric acid as a nitrogen source after spontaneous mutation. During growth, the mutant HL PM-1 transiently accumulated an orange-red metabolite, which was identified as a hydride-Meisenheimer complex of picric acid. This complex was formed as the initial metabolite and further converted with concomitant liberation of nitrite. 2,4,6-Trinitrocyclohexanone was identified as a dead-end metabolite of the degradation of picric acid, indicating the addition of two hydride ions to picric acid.

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confidence: 99%

Initial hydrogenation during catabolism of picric acid by Rhodococcus erythropolis HL 24-2

Lenke

Knackmuss

1992

Appl Environ Microbiol

117

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“…Previous reports of contamination by picrate showed movement through soil in some cases 4,6 and retention by soil in others. 10 Ammonium picrate and picric acid are not degraded in the environment, either biologically or photochemically; 6 however, some strains of adapted organisms may make bioremediation a possibility.…”

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confidence: 99%

A field method for quantifying ammonium picrate and picric acid in soil

Thorne

Jenkins

1997

Field Analyt. Chem. Technol.

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A simple field method for the determination of ammonium picrate and picric acid in soil was developed. Picric acid is a strong acid with a pKa = 0.80, and is colorless when dissolved in an organic solvent, whereas its anion ( picrate) is bright yellow. Picric acid and picrate ions were extracted from undried soil by shaking with acetone;any picric acid extracted was rapidly converted to picrate in the wet acetone. Picrate was extracted from the acetone soil extracts by passing the solutions through a solid-phase anion exchanger to remove interferences.Acidified acetone was used to convert the picrate to picric acid and elute it from the ion exchanger. The absorbance of the solution at 400 nm was measured; then the picric acid was converted to the colored picrate ion by diluting the eluent with water. Absorbance at 400 nm was measured again and the concentration of picrate was obtained from the difference in the absorbance measurements, corrected for dilution. The method detection limit is 1.3 pg g-' of soil. Field-contaminated soils were assayed, and the results compared favorably to those from HPLC analyses in the range of 10-4400 pg g-'. The method is simple to use, can be implemented under field conditions, and complements on-site methods for TNT, RDX, and 2,4-DNT.

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Section: Introductionmentioning

confidence: 99%

A field method for quantifying ammonium picrate and picric acid in soil

Thorne

Jenkins

1997

Field Analyt. Chem. Technol.

View full text Add to dashboard Cite

A simple field method for the determination of ammonium picrate and picric acid in soil was developed. Picric acid is a strong acid with a pKa ϭ 0.80, and is colorless when dissolved in an organic solvent, whereas its anion ( picrate) is bright yellow. Picric acid and picrate ions were extracted from undried soil by shaking with acetone; any picric acid extracted was rapidly converted to picrate in the wet acetone. Picrate was extracted from the acetone soil extracts by passing the solutions through a solid-phase anion exchanger to remove interferences. Acidified acetone was used to convert the picrate to picric acid and elute it from the ion exchanger. The absorbance of the solution at 400 nm was measured; then the picric acid was converted to the colored picrate ion by diluting the eluent with water. Absorbance at 400 nm was measured again and the concentration of picrate was obtained from the difference in the absorbance measurements, corrected for dilution. The method detection limit is 1.3 g g Ϫ 1 of soil. Field-contaminated soils were assayed, and the results compared favorably to those from HPLC analyses in the range of 10 -4400 g g Ϫ 1 . The method is simple to use, can be implemented under field conditions, and complements on-site methods for TNT, RDX, and 2,4-DNT.

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Estimation of Ammonium Picrate in Wastes from Bomb-and Shell-Loading Plants. Some Reactions of Ammonium Picrate in Water and Sewage

Abstract: Now, representing the general formula of the oxide obtained as PriOy, the ratio of y/x may be calculated by the relation x (atomic weight of praseodymium) + y (atomic w'eight of oxygen)

Cited by 6 publications

References 3 publications

Initial hydrogenation during catabolism of picric acid by Rhodococcus erythropolis HL 24-2

Initial hydrogenation during catabolism of picric acid by Rhodococcus erythropolis HL 24-2

A field method for quantifying ammonium picrate and picric acid in soil

A field method for quantifying ammonium picrate and picric acid in soil

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