Iron (III) complexation with 2,3-pyridinediol

Katyal, Mohan; Goel, D. P.; Singh, Vikram

doi:10.1016/0039-9140(68)80157-2

Cited by 12 publications

(3 citation statements)

References 3 publications

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“…TLC plates were developed in solvent system A (benzene‐acetone‐acetic acid, 50:50:1), and compounds were visualized by observation under UV light and by spraying with 2% (w/v) ferric chloride (FeCl 3 ·6H 2 O) solution in ethanol. Iron (III) complexes with 2,3‐pyridinediol and forms a blue to purple‐red product, depending on the acidity [11]. The products were isolated by extracting TLC scrapings with acetone.…”

Section: Methodsmentioning

confidence: 99%

Photolytic and microbial degradation of 3,5,6‐trichloro‐2‐pyridinol

Feng

Minard

Bollag

1998

Enviro Toxic and Chemistry

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The photolytic and microbial degradation of 3,5,6‐trichloro‐2‐pyridinol (TCP), a metabolite of the insecticide chlorpyrifos and the herbicide triclopyr, has been investigated. TCP (80 mg/L) was decomposed to nondetectable levels within 2 h of ultraviolet irradiation. Release of 14CO2 and chloride ion was observed; however, approximately 60% of the initial radioactivity remained in the solution. Dichlorodihydroxypyridine isomers and reductive dechlorination products were found as intermediate products of TCP photolysis. It was proposed that both hydrolytic and reductive dechlorination occurred during photodegradation of TCP. Although TCP can be degraded via photolysis, many degradation products remained in the aqueous medium and only some of them, the reductive dechlorination products, can be mineralized by Pseudomonas sp. ATCC 700113. The degradation of the parent compound, TCP, by Pseudomonas sp. ATCC 700113 also appears to involve a reductive dechlorination mechanism. A consortium of microorganisms may be needed if a treatment process combining microbial and photolytic activity is to be used to remove TCP in industrial wastewater.

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Section: Methodsmentioning

confidence: 99%

Photolytic and microbial degradation of 3,5,6‐trichloro‐2‐pyridinol

Feng

Minard

Bollag

1998

Enviro Toxic and Chemistry

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“…After 4 d 22.9% of the initial radioactivity was recovered as 14 CO 2 , 54.2% remained in the medium, and 2.3% remained in biomass. [2,[6][7][8][9][10][11][12][13][14] C]TCP was decomposed rapidly upon UV irradiation with a half-life of approximately 25 min, and 25.1% of the initial radioactivity was recovered as 14 CO 2 . This result was in agreement with the finding of Smith [1], who reported that 25% of 14 C-TCP was decomposed to 14 CO 2 .…”

Section: Metabolism Of Photodegradation Products By Tcp-degrading Bacmentioning

confidence: 99%

Photolytic and Microbial Degradation of 3,5,6-Trichloro-2-Pyridinol

Feng¹,

Minard²,

Bollag³

1998

Environ Toxicol Chem

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Abstract-The photolytic and microbial degradation of 3,5,6-trichloro-2-pyridinol (TCP), a metabolite of the insecticide chlorpyrifos and the herbicide triclopyr, has been investigated. TCP (80 mg/L) was decomposed to nondetectable levels within 2 h of ultraviolet irradiation. Release of 14 CO 2 and chloride ion was observed; however, approximately 60% of the initial radioactivity remained in the solution. Dichlorodihydroxypyridine isomers and reductive dechlorination products were found as intermediate products of TCP photolysis. It was proposed that both hydrolytic and reductive dechlorination occurred during photodegradation of TCP. Although TCP can be degraded via photolysis, many degradation products remained in the aqueous medium and only some of them, the reductive dechlorination products, can be mineralized by Pseudomonas sp. ATCC 700113. The degradation of the parent compound, TCP, by Pseudomonas sp. ATCC 700113 also appears to involve a reductive dechlorination mechanism. A consortium of microorganisms may be needed if a treatment process combining microbial and photolytic activity is to be used to remove TCP in industrial wastewater.

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“…Iron(III) forms a 1:2 complex with 2,-3-pyridinediol at pH 5 (282). A sensitive reagent for molybdenum (VI) but which does not react with tungsten is 7-iodo-8-quinolinol-5-sulfonic acid (75).…”

mentioning

confidence: 99%