[SR-XRF analysis of characteristics of heavy element concentration in qingdao algae and application to monitoring oceanic pollution].
Quantitative and qualitative analysis of the heavy element concentration characteristics of 14 specimens of 9 kinds of Qingdao algae by synchrotron radiation X-ray fluorescence (SR-XRF) are presented. Results show that various algae are quite different in element concentration. Some algae reveal super concentration ability, such as Sargassum pallidum for As and Sr, Symphyocladia latiuscula for Br and Laminaria japonica for I. Changes in the ratio of peak intensities of Mn and Fe in XRF spectrum reflect on the antagonism between elements in algae, relatively to the environment pollution. The minimum detection limit (MDL) of standard specimen, Antarctic mosses, was measured. Quantitative analysis and comparison of 10 specimens of 5 kind algae gathered from the same zone of Qingdao near-sea in 1985 and in 1999 were done. The contents of Mn, Fe, Zn, As, Br and Pb increased in 1999, in which, As in Sargassum pallidum increased 155% and Pb in Codium fragil increased 120%. The results indicated that the pollution in the near-sea of Qingdao is currently tending toward severity.
Kang
Shi-xiu
SX
Department of Astronomy and Applied Physics, University of Science and Technology of China, Hefei 230026, China.
Shen
Xian-sheng
XS
Huang
Yu-ying
YY
Ju
Xin
X
Wu
Zi-qin
ZQ
D001151:Arsenic / Q000032:analysis*; D004784:Environmental Monitoring; D056890:Eukaryota / Q000737:chemistry*; D019216:Metals, Heavy / Q000032:analysis; D012623:Seawater / Q000737:chemistry; D013052:Spectrometry, X-Ray Emission / Q000379:methods; D013324:Strontium / Q000032:analysis; D017356:Synchrotrons; D014874:Water Pollutants, Chemical / Q000032:analysis*
D019216:Metals, Heavy; D014874:Water Pollutants, Chemical; D001151:Arsenic; D013324:Strontium