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dc.contributor.authorBaskaran, Markzh_CN
dc.contributor.authorChurch, Thomaszh_CN
dc.contributor.authorHong, Gizh_CN
dc.contributor.authorKumar, Anupamzh_CN
dc.contributor.authorQiang, Mazh_CN
dc.contributor.authorChoi, Hiuzh_CN
dc.contributor.authorRigaud, Sylvainzh_CN
dc.contributor.authorMaiti, Kanchanzh_CN
dc.contributor.author马强zh_CN
dc.date.accessioned2015-07-22T03:09:06Z
dc.date.available2015-07-22T03:09:06Z
dc.date.issued2013zh_CN
dc.identifier.citationLIMNOLOGY AND OCEANOGRAPHY-METHODS, 2013,11:126-138zh_CN
dc.identifier.otherWOS:000317921500002zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/87718
dc.descriptionNSF [OCE-0851032, OCE-0851462]; Korea Ocean Research and Development Institute; Marine Pubic Welfare Project [201005012-3]; Fujian Natural Science Foundation [2009J06026]; U.S. National Science Foundation, Chemical Oceanography Programzh_CN
dc.description.abstractAccurate measurements of particulate Po-210 (Po-210(p)) and Pb-210 (Pb-210(p)) are required in the investigation of (i) partitioning of Po and Pb between particulate and dissolved phases and (ii) export estimates of carbon and other key trace metals from the euphotic zone via sinking particulate matter. Based on the intercomparison of different composition of the filter material (QMA, Supor, Millipore, and Pall GN6) and flow rates (2 to 8 L min), we show how these factors affect the measured concentrations of Po-210(p) and Pb-210(p) and their activity ratios (AR). As such, we recommend using Supor 0.4 mu m filter and a flow rate of up to 8 L/min for the measurements of Po-210(p) and Pb-210(p). Furthermore, we inter-compared Po-210(p) and Pb-210(p) obtained by small-volume McLane and large-volume MULVFS pumps. The activities of Po-210(p) in MULVFS filter samples are somewhat higher than that of McLane filter samples, whereas the Po-210/Pb-210 AR collected by McLane pump is distinctly lower, suggesting some fractionation in the collection process by the pumping systems. Likewise comparison of vertical profiles of Po-210(p) and Pb-210(p) obtained using McLane pumps by two independent research groups at the two intercalibration stations in the Pacific Ocean show quite similar values except in the mesopelagic waters, suggesting possible uneven loading and presence of larger gelatinous plankton in the filter. Finally, we append a detailed analysis of various correction factors for the accurate calculation of in situ Po-210 and Pb-210. Presented results are relevant to the worldwide community that uses Po-210-Pb-210 as tracers in aquatic systems.zh_CN
dc.language.isoen_USzh_CN
dc.publisherAMER SOC LIMNOLOGY OCEANOGRAPHYzh_CN
dc.source.urihttp://dx.doi.org/10.4319/lom.2013.11.126zh_CN
dc.subjectORGANIC-CARBONzh_CN
dc.subjectARABIAN SEAzh_CN
dc.subjectTH-234zh_CN
dc.subjectMATTERzh_CN
dc.subjectWATERSzh_CN
dc.subjectPARTICLESzh_CN
dc.subjectSAMPLESzh_CN
dc.subjectINTERCALIBRATIONzh_CN
dc.subjectPHYTOPLANKTONzh_CN
dc.subjectPACIFICzh_CN
dc.titleEffects of flow rates and composition of the filter, and decay/ingrowth correction factors involved with the determination of in situ particulate Po-210 and Pb-210 in seawaterzh_CN
dc.typeArticlezh_CN


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