Platinum, Palladium, and Rhodium in Fresh Snow from the Aspe Valley (Pyrenees Mountains, France)

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• 作者：Mariella Moldovan ; Sophie Veschambre ; David Amouroux ; Bruno B&eacute ; nech ; Olivier F. X. Donard
• 刊名：Environmental Science & Technology
• 出版年：2007
• 出版时间：January 1, 2007
• 年：2007
• 卷：41
• 期：1
• 页码：66 - 73
• 全文大小：608K
• 年卷期：v.41,no.1(January 1, 2007)
• ISSN：1520-5851

文摘

Platinum, palladium, and rhodium have been measured infresh snow samples from 14 locations within the AspeValley (Pyrenees Mountains, France) during two winterseasons, February 2003 and March 2004. Ultracleanprocedures were employed for the sampling, sampletreatment, and analysis in order to reduce samplecontamination. Possible spectral interferences on platinumgroup element (PGE) analysis by inductively coupledplasma mass spectrometry (ICP-MS) were controlledand corrected. The detection limits obtained were 0.05,0.45, and 0.075 pg g^-1 for Pt, Pd, and Rh, respectively. PGEcontent in fresh snow from the Pyrenees Mountainsrange from 0.20 to 2.51 pg g^-1 for Pt, 1.45-14.04 pg g^-1for Pd, and 0.24-0.66 pg g^-1 for Rh. The higher PGEconcentration, generally measured in sites located closeto road traffic, exhibit potential resuspension of PGE-enrichedparticles emitted locally from the car exhaust, althoughno direct relationship could be observed with the numberof vehicles. Measured atmospheric synoptic conditionsallowed identification of the origin of air masses reachingthe Aspe Valley and therefore provided informationabout the possible sources of platinum group elements.Higher PGE concentrations measured in 2004 samples,compared to the ones collected in 2003, indicate the influenceof atmospheric synoptic conditions on the studied area.Fresh snow samples collected in 2003 could not be linkedto a specific source, whereas 2004 samples could beinfluenced by PGE emissions from European vehicle fleetand Russian PGE-containing mining activities.