Fe(III) photocatalyzed degradation of low chain carboxylic acids

Franch, Maria Isabel; Ayllón, José A.; Peral, José; Domènech, Xavier

doi:10.1016/j.apcatb.2003.12.024

Cited by 49 publications

(25 citation statements)

References 28 publications

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“…Besides this, the large production level of these acids makes it evident their commercial and industrial relevance, and leads to their presence in industrial wastewaters [35]. They are usually released during the manufacture of polymer products, the finishing and dyeing of textiles [36], the synthesis of soaps and pharmaceuticals and even from cleaning processes of nuclear power plants [37]. Most of these acids are biodegradable, but they are often mixed with other persistent compounds in wastewaters.…”

Section: Introductionmentioning

confidence: 99%

Reaction sequence for the mineralization of the short-chain carboxylic acids usually formed upon cleavage of aromatics during electrochemical Fenton treatment

Oturan¹,

Pimentel

Sirés³

2008

Electrochimica Acta

174

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Section: Introductionmentioning

confidence: 99%

Reaction sequence for the mineralization of the short-chain carboxylic acids usually formed upon cleavage of aromatics during electrochemical Fenton treatment

Oturan¹,

Pimentel

Sirés³

2008

Electrochimica Acta

174

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“…Iron(III) salts have been shown to be ideal for the derivatization of carboxylic groups (Franch et al, 2004;Arayne et al, 2008), which makes them a suitable reagent for detection and quantification of quinolones via their carboxylic group. Fe 3?…”

Section: Resultsmentioning

confidence: 99%

Facile and manifest spectrophotometric methods for the determination of six quinolone antibiotics in pharmaceutical formulations using iron salts

et al. 2009

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Simple spectrophotometric methods have been developed for the determination of six quinolone antibiotics, namely, ciprofloxacin, gatifloxacin, norfloxacin, levofloxacin, ofloxacin, and pefloxacin, in pharmaceutical formulations using three different salts of iron. These methods are based on the formation of complexes with ferric nitrate, ferric chloride, or iron ammonium citrate in which the carboxylic group of quinolones undergoes complexation with iron. The complexes formed in these reactions, having a brown color, were measured at their respective k max values. The increase in absorbance was directly proportional to the concentration of quinolones and obeys Beer's law in the range of 6-300 lg mL -1 (r C 0.9999). The proposed methods were optimized and validated per the guidelines of the International Conference on Harmonization. The proposed methods were successfully employed for determination of these quinolones in pharmaceutical formulations.

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“…with low chain carboxylic acids) can undergo photochemical redox reactions [14,15,52,76,77,79,[86][87][88]. The photoredox behaviour has been found for some simple Fe(III) complexes with carboxylic acids (e.g.…”

Section: Photochemical/chemical Cyclingmentioning

confidence: 99%

Metals in Aerosols

Grgić

2008

Environmental Chemistry of Aerosols

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Atmospheric aerosols have important role in the biogeochemistry and transportation of metals in the atmosphere. On a mass basis, so-called trace metals represent a relatively small proportion of the atmospheric aerosol (generally less than 1%). Among them are transition metals (TM) (e.g. vanadium, chromium, manganese, iron, cobalt, nickel, copper, etc.), which have several oxidation states, and thus can participate in many important atmospheric redox reactions. Field measurements provide strong evidence that TM are common components in aerosol particles as well as in atmospheric liquid water [1][2][3][4][5].The concentrations of trace metals in atmospheric aerosols are a function of their sources. Natural emissions of trace metals result from different processes acting on crustal minerals (e.g. erosion, surface winds and volcanic eruptions), as well as from natural burning and from the oceans. On a global scale, resuspended surface dusts make a large contribution to the total natural emission of trace metals to the atmosphere (e.g. more than 50% of Cr, Mn and V, and more than 20% of Cu, Mo, Ni, Pb, Sb and Zn), whereas volcanism presumably generates about 20% of Cd, Hg, As, Cr, Cu, Ni, Pb and Sb [6]. Sea-salt aerosols generated by spray and wave action may contribute to about 10% of total trace metals emissions. Biomass combustion can contribute to emissions of Cu, Pb and Zn [7]. The predominant anthropogenic sources are due to high-temperature processes, biomass burning, fossil-fuel combustion, industrial activity, incineration, etc. Anthropogenic high-temperature processes result in the release of volatile metals as vapours forming particles by condensation or gas-to-particle reactions. Combustion of fossil fuels is the most important anthropogenic source of atmospheric Be, Co, Hg, Mo, Ni, Sb, Se, Sn and V; it also contributes to emissions of As, Cr, Cu, Mn and Zn [6]. Industrial metallurgical processes produce the largest emissions of As, Cd, Cu, Ni and Zn. Exhaust emissions from gasoline-and diesel-fuelled vehicles contribute to atmospheric Pb, Fe, Cu, Zn, Ni and Cd, while tyre-rubber abrasion to Zn [8]. In the last decade, the use of new automobile catalytic converters also contributes to the emissions of Pt, Pd and Rh [9, 10]. The composition of aerosols depends on the occurrence of metals in combustion processes and their volatility as well as on their amount produced by decomposition of continental and oceanic surfaces. Thus, the size distributions of different metals depend on the balance of different sources.Environmental Chemistry of Aerosols Edited by Ian Colbeck

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Fe(III) photocatalyzed degradation of low chain carboxylic acids

Cited by 49 publications

References 28 publications

Reaction sequence for the mineralization of the short-chain carboxylic acids usually formed upon cleavage of aromatics during electrochemical Fenton treatment

Reaction sequence for the mineralization of the short-chain carboxylic acids usually formed upon cleavage of aromatics during electrochemical Fenton treatment

Facile and manifest spectrophotometric methods for the determination of six quinolone antibiotics in pharmaceutical formulations using iron salts

Metals in Aerosols

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