TY - Data T1 - Data of chemical elements in the sediments of Mochou Lake during the 18th regional survey of Zhongshan station, Antarctica, China, 2002 A1 - Hu hongqiao DO - 10.12072/ncdc.azs.db3626.2023 PY - 2020 DA - 2020-12-23 PB - National Cryosphere Desert Data Center AB - A clean PVC tube with an inner diameter of 12 cm was inserted vertically during sampling. The length of the sediment column was 85 cm. The sediment column obtained was used to separate the sample at 1 cm intervals. The sediment samples were analyzed at 4cm intervals, including 26 elements (Zn, Cu, F, s, P, Se, Hg, as, CD, Sr, Ba, B, GA, Cr, Na, K, CA, Mg, Mn, Fe, Ti, Al, Si, Ni, V, Pb). The lake sediment samples used for element content analysis were dried in the laboratory, ground to 200 mesh, and 0. 1~0。 5 g, weighed accurately, and then nitrated in a crucible under electric heating with a variety of acids. The concentrations of SiO2, Al2O3 and FeO were determined by various wet chemical analysis methods; s was determined by ki volumetric method after combustion in srjk-2 high temperature furnace; F was determined by ion selective electrode method (isz); the trace elements Sr and Ba were determined by ICP-AES after nitration with aqua regia / HF / HClO4; P2O5, TiO2, Cr, V were determined by ICP-AES, The concentrations of as, Se and Hg were determined by AFS-2202a atomic fluorescence spectrometer; the contents of K2O, Na2O, Cao, MgO, Fe2O3, Cu and Zn were determined by pe-1100b atomic absorption spectrometer; the contents of Pb and Ni were determined by HP 3510 atomic absorption spectrometer; the contents of CD and GA were determined by pe1100b atomic absorption spectrometer Hga-700 graphite furnace atomic absorption spectrometry was used. This data set includes the concentrations of elements K, Na, CA, Mg, Fe, Cu, Zn, Pb, NiCd, GA, Sr, Ba, SiO2, Al2O3, P2O5, TiO2, Cr2O3, F, s, FeO, as, Se, B and Hg. This data set is the 18th survey of Mochou Lake Sediment at Zhongshan station, Antarctica in 2002. DB - NCDC UR - http://www.ncdc.ac.cn/portal/metadata/030f3504-0de2-11e6-a761-5cc5d45ad3ae ER -