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  "serviceDescription" : "The distribution of different chemical elements across LIS Island Sound provides information about contaminant levels and can be used to trace sediment pathways from different sources including the major rivers. Contaminant levels and sources provide insights into the overall health of the system and understanding of the sediment dynamic of the system.\n\nDownload: https://www.marine-geo.org/tools/search/Files.php?data_set_uid=31233", 
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  "description" : "\u003cDIV STYLE=\"text-align:Left;\"\u003e\u003cDIV\u003e\u003cDIV\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eProcessed results from of surface x-ray florescence (XRF) analysis of the sediment grab samples recovered as part of the Long Island Sound mapping project Phase II. Sediment grab samples have been collected in the summers of 2017 and 2018 using a modified van Veen grab sampler. A subsample of the top two centimeter was taken for further lab analysis. Dried and homogenized splits of the samples were analyzed for chemical composition using an Innov-X Alpha series 4000 XRF (Innov-X Systems, Woburn, MA). The results of the measurements are presented as ppm. The XRF analytical protocol included the following elements: P, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn As, Se, Br, Rb, Sr, Zr, Mo, Ag, Cd, Sn, Sb, I, Ba, Hg, Pb, Bi, Th, and U. However, only Cl, K, Ca, Ti, Cr, Mn, Fe, Co, Cu, Zn, As, Br, Rb, Sr, Zr and Pb were consistently present at levels above background detection in surficial sediments collected in the LIS Phase II area. The data are presented as Excel spreadsheet.\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN STYLE=\"font-weight:bold;\"\u003e\u003cSPAN\u003eTime period of content: \u003c/span\u003e\u003c/span\u003e\u003cSPAN STYLE=\"font-style:italic;\"\u003e\u003cSPAN\u003e2017-08-01 to 2022-11-16\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eAttribute accuracy\u003c/span\u003e\u003c/span\u003e\u003cSPAN\u003e\u003cSPAN\u003e: The attribute accuracy varies by element and is measured as +/- 1 standard variation\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN STYLE=\"font-weight:bold;\"\u003e\u003cSPAN\u003eCompleteness\u003c/span\u003e\u003c/span\u003e\u003cSPAN\u003e\u003cSPAN\u003e: The dataset is mostly complete. A few samples had too little material to perform regular and acid-treated samples.\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN STYLE=\"font-weight:bold;\"\u003e\u003cSPAN\u003ePositional accuracy\u003c/span\u003e\u003c/span\u003e\u003cSPAN\u003e\u003cSPAN\u003e:  \u003c/span\u003e\u003c/span\u003e\u003cSPAN STYLE=\"font-style:italic;\"\u003e\u003cSPAN\u003eL\u003c/span\u003e\u003c/span\u003e\u003cSPAN\u003e\u003cSPAN\u003eocations are based on DGPS using the ship GPS antenna for most cores resulting +/- 5 m accuracy\u003c/span\u003e\u003c/span\u003e\u003cSPAN STYLE=\"font-style:italic;\"\u003e\u003cSPAN\u003e.\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN STYLE=\"font-weight:bold;\"\u003e\u003cSPAN\u003eAttributes: \u003c/span\u003e\u003c/span\u003e\u003cSPAN\u003e\u003cSPAN\u003e \u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eSample_ID: Text describing the Name of the grab sample, a combination of survey ID and grab sample number.\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eShort_name: Text describing just the grab number, but without the survey ID\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eLatitude: Latitude of grab sample station\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eLongitude: Longitude of grab sample station\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eP: measured Phosphate content in ppm\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eP_err: uncertainty of Phosphate measurement \u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eS: measured Sulfate content in ppm\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eS_err: uncertainty of 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ppm\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eTi_L_err: uncertainty of Titanium measurement\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eTi: measured Titanium content in ppm\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eTi_err: uncertainty of Titanium measurement\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eV: measured Phosphate content in ppm\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eV_err: uncertainty of Phosphate measurement\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eCr_LEAP: measured Phosphate content in ppm\u003c/span\u003e\u003c/span\u003e\u003c/p\u003e\u003cP\u003e\u003cSPAN\u003e\u003cSPAN\u003eCr_L_err: uncertainty of Phosphate 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