High-resolution Trace Element Profiles in Calcium Carbonate Shells using LA-ICP-MS: an Environmental Prozy and Biogeochemical Cycling?
In this study we have used 193 ArF excimer laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), to produce a high resolution (32μm) shells record of Mn, Zn, Sr, Ba, Mg, Cr, Cu, As, Cd, Co and Pb for the Periglypta reticulate and Tridacna gigas mussel shells from the Yalong bay, Hainan Island of China. Our synthesized CaCO3 co-precipitation multi-elements discs as the solid matrix-matched standards for calibration, and 42Ca was selected as the internal standard to compensate the draft of signal. The results also demonstrated our co-precipitation matrix matched calibration method was more appropriate than the commercial NIST610/612 glass standards calibration method. Validation of the matrix-matched LAICP-MS technique indicated that the method provides accurate and reproducible (RSD<10％) analysis of trace elements in shells (0.01～3000μg/g). The detection limits of this method for these elements were obtained in the range of 0.103 to 0.709μg/g with correlation coefficients (R) better than 0.993. The proposed method was successfully applied to determine the trace elements in the two shells. The high-resolution trace element profiles could be as an environmental proxy and biogeochemical cycling for the area in which the fish or mussel lives.
LA-ICP-MS trace element profiles shells environmental prozy biogeochemical cycling
Wei Guo Shenghong Hu Yuee Peng
Faculty of Earth Sciences China University of Geosciences Wuhan, 430074, P. R. China School of Environmental Studies China University of Geosciences Wuhan, 430074, P. R. China
国际会议
上海
英文
4480-4483
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）