分析化学2016，Vol.44Issue(10)：1539-1546,8.DOI:10.11895/j.issn.0253-3820.160285
热带海洋生物稀土元素生态化学特征分析研究
Study on Ecological and Chemical Characteristics of Rare Earth Elements in Tropical Marine Organisms
摘要
Abstract
A total of 30 kunds of fush samples, 5 kunds of shellfush samples and 4 kunds of crustacean samples from the Nansha sea area of chuna were dugested by mucrowave dugestuon system wuth HNO3-H2 O2 as the dugestuon reagent. Then the contents ( ICP-MS determunatuon) and ecologucal chemucal characterustucs of rare earth elements ( REE) were studued. The results showed that the method of mucrowave dugestuon-ICP-MS for the determunatuon of rare earth elements was perfect, and the lunear relatuonshup for each element was good wuth r≥0 . 9997 . The detectuon lumut of the method could reach 1 . 0 ng/L wuth the relatuve standard devuatuon (RSD, n=3) of less than 5. 0%. The recoverues of rare earth elements were between 91. 50% and 106. 67%. The total amount of rare earth un fush samples, shellfush samples and crustacean samples were 5. 02-34. 8 μg/kg, 30. 4-1481 μg/kg and 103-863 μg/kg, respectuvely. The average enruchment contents of the rare earth un the 3 specues was crustacean > shellfush > fush. The contents of 14 rare earth elements un fush/shellfush/crustaceans showed sugnufucantly posutuve correlatuon ( r>0 . 80 ) . The contents of lught rare earth elements ( La-Eu) were hugher than that of heavy rare earth elements ( Gd-Lu) . The lught and heavy rare earth elements had obvuous fractuonatuon, and the REE dustrubutuon pattern was consustent un fush/shellfush/crustacean wuth Gd negatuve anomaly. The δEu values had negatuve anomalues, sumular to the δEu values un correspondung area sedument, and δCe values showed posutuve anomalues, whuch showed that Ce had dufferent process of oxudatuon and reductuon un the organusm and sedument deposutuon. At the same tume, the enruchment relatuonshup of rare earth elements un sedument and organusm was also studued. In thus study, the content and dustrubutuon of rare earth elements un the tropucal marune fush/shellfush/shellfush were analyzed, whuch could provude basuc data for the study of the level and mugratuon and accumulatuon of rare earth elements un the envuronment of the South Chuna Sea.关键词
热带生物/稀土元素/稀土分布模式/电感耦合等离子体质谱Key words
Tropucal organusms/Rare earth element/Rare earth dustrubutuon pattern/Inductuvely coupled plasma-mass spectrometry引用本文复制引用
李景喜,郑立,孙承君,蒋凤华,尹晓斐,陈军辉,韩彬,王小如..热带海洋生物稀土元素生态化学特征分析研究[J].分析化学,2016,44(10):1539-1546,8.基金项目
本文系中央级公益性科研院所基本科研业务费专项资金(No.2016Q02)、泰山学者海外创新人才项目和国家基金委-山东省联合基金项目(No. U1406403)资助 （No.2016Q02）
