10.1594/PANGAEA.995891Han, YuyeYuyeHanXiamen UniversitySteiner, ZviZviSteiner0000-0002-9584-4956Hebrew University of JerusalemPANGAEA2026Event labelStation labelLATITUDELONGITUDEDepth, bathymetricDEPTH, waterTemperature, waterSalinityLithium/Sodium ratioLithium/Sodium ratio, standard deviationLithium, normalizedLithium, normalized, standard deviationPotassium/Sodium ratioPotassium/Sodium ratio, standard deviationPotassium, normalizedPotassium, normalized, standard deviationMagnesium/Sodium ratioMagnesium/Sodium ratio, standard deviationMagnesium normalizedMagnesium normalized, standard deviationCalcium/Sodium ratioCalcium/Sodium ratio, standard deviationCalcium normalizedCalcium normalized, standard deviationStrontium/Sodium ratioStrontium/Sodium ratio, standard deviationStrontium normalizedStrontium normalized, standard deviationCTD/Rosette, ultra cleanICP-OES, VARIAN 720-ES64PE373PelagiaGlobal marine biogeochemical cycles of trace elements and their isotopes (GEOTRACES)2013-07-17T06:39:48/2013-07-23T14:06:00Dataset3060 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalData access is restricted (moratorium, sensitive data, license constraints)This dataset presents dissolved major element to Na ratios (Li/Na, K/Na, Mg/Na, Ca/Na and Sr/Na) and salinity-normalized concentrations for seawater samples collected in the Black Sea in July 2013 during R/V Pelagia cruise 64PE373, as part of the Dutch GEOTRACES GA04-N transect. Samples were collected using a trace-metal-clean CTD system, filtered through 0.2 µm filter cartridges, stored in acid-cleaned low-density polyethylene bottles, and acidified with ultrapure HCl. Major elements were analyzed as ratios to Na by sample-standard bracketing using an Agilent Technologies Varian 720 ICP-OES. Calibration and consistency standards were prepared from different dilutions of an IAPSO seawater salinity standard (batch P157). Conversion from element-to-Na ratios to element concentrations assumes a Na concentration of 468.46 mmol kg−1 at salinity 35 and a constant Na-to-salinity ratio. Salinity-normalized concentrations were calculated for both salinity 35 and salinity 21, with the latter corresponding to the average salinity of the Black Sea.29.146639.674641.571843.1425Black Sea