Spectrophotometric Detection of Trace Copper Levels in Jet Fuel

Collins, Greg E.; Morris, Robert E.; Wei, Jing-Fong; Smith, Matthew A.; Hammond, Mark; Michelet, Véronique; Winkler, Jeffrey D.; Serino, Pamela M.; Guo, Yan

doi:10.1021/ef010271a

Cited by 22 publications

(13 citation statements)

References 11 publications

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“…[10] We are interested in their optical sensing applications [11][12][13][14] and in particular their potential for playing multiple roles within a chemical sensor (photoswitch, ligand, transducer). Utilizing photo-switchable molecules such as spiropyrans, which can be switched between active or passive forms, may enable such behaviour to be realised.…”

Section: Resultsmentioning

confidence: 99%

Schizophrenic Molecules and Materials with Multiple Personalities - How Materials Science could Revolutionise How we do Chemical Sensing

Byrne¹,

Scarmagnani

Radu³

et al. 2009

MRS Proc.

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Molecular photoswitches like spiropyrans derivatives offer exciting possibilities for the development of analytical platforms incorporating photo-responsive materials for functions such as light-activated guest uptake and release and optical reporting on status (passive form, free active form, guest bound to active form). In particular, these switchable materials hold tremendous promise for microflow-systems, in view of the fact that their behaviour can be controlled and interrogated remotely using light from LEDs, without the need for direct physical contact. We demonstrate the immobilisation of these materials on microbeads which can be incorporated into a microflow system to facilitate photoswitchable guest uptake and release. We also introduce novel hybrid materials based on spiropyrans derivatives grafted onto a polymer backbone which, in the presence of an ionic liquid, produces a gel-like material capable of significant photoactuation behaviour. We demonstrate how this material can be incorporated into microfluidic platforms to produce valve-like structures capable of controlling liquid movement using light.

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Section: Resultsmentioning

confidence: 99%

Schizophrenic Molecules and Materials with Multiple Personalities - How Materials Science could Revolutionise How we do Chemical Sensing

Byrne¹,

Scarmagnani

Radu³

et al. 2009

MRS Proc.

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“…6´ Halo substituted spiroindoline pyranoquinolines were synthesized according to Scheme 2. The reaction of 2 methyleneindolines 5 and 6 or 3Н indolium halides 7-10 with 5 halo substituted formyl quinolinols 3 and 4 in the presence of a base afforded unsubstituted spiroindolinepyranoquinolines 11 11 and 12 15 and new spiroindolinepyranoquinolines 13-22, con taining various substituents in the indoline fragment of the molecule.…”

Section: Methodsmentioning

confidence: 99%

Spiropyrans and spirooxazines

et al. 2008

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The Duff formylation of 5 bromo or 5 chloro 8 hydroxyquinoline leads to the corresponding 7 formyl derivatives, condensation of which with 2 methyleneindolines or 3Н indolium halides in the presence of a base afforded new photochromic 6´ halo substituted spiro[indoline 2,2´ 2H pyrano[3,2 h]quinolines]. Thermal and photo induced isomerization of compounds obtained have been investigated by 1 Н NMR and UV spectroscopy.

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“…Pb, Mn, Fe, Zn, and Cu are commonly used as additives in aviation fuels (Collins et al, 2002) to boost the octane number, improve combustion, suppress smoke, and reduce NO X emissions. Ni and Zn emissions may increase due to Ni-Zn alkaline storage batteries (Dell, 1996).…”

Section: Concentration and Distribution Of Metalsmentioning

confidence: 99%

The Effect of Aircraft Traffic Emissions on the Soil Surface Contamination Analysis around the International Airport in Delhi, India

Ray¹,

Khillare²,

Kim³

2012

ajae

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To investigate the effect of aircraft traffic emissions on soil pollution, metal levels were analyzed for 8 metals (Fe, Cr, Pb, Zn, Cu, Ni, Mn and Cd) from the vicinity of the Indira Gandhi International (IGI) airport in Delhi, India. The texture of the airport soil was observed to be sandy. Among the metals, Cd showed minimum concentration (2.07 μg g -1 ), while Fe showed maximum concentration (4379 μg g -1 ). The highest metal accumulation was observed at the landing site. Significant correlations were observed between metals and different textures (sand, silt, and clay) as well as with organic carbon (OC). The results indicate that grain size play a major role in OC retention in soil and subsequently helps in adsorption of metals in soil. Müller's geoaccumulation index (I-geo) showed that airport soil was contaminated due to Cd and Pb with the pollution class 2 and 1, respectively. Pollution load index of the airport site was 1.34-3 times higher than the background site. The results of factor analysis suggested that source of the soil metal is mainly from natural weathering of soil, aircraft exhaust, and automobile exhaust from near by area. With respect to Dutch target values, the airport soils showed~3 times higher Cd concentration. The study highlighted the future risk of enhanced metal pollution with respect to Cd and Pb due to aircraft trafficking.

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Spectrophotometric Detection of Trace Copper Levels in Jet Fuel

Cited by 22 publications

References 11 publications

Schizophrenic Molecules and Materials with Multiple Personalities - How Materials Science could Revolutionise How we do Chemical Sensing

Schizophrenic Molecules and Materials with Multiple Personalities - How Materials Science could Revolutionise How we do Chemical Sensing

Spiropyrans and spirooxazines

The Effect of Aircraft Traffic Emissions on the Soil Surface Contamination Analysis around the International Airport in Delhi, India

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