Biomonitoring trace element atmospheric deposition using lichens in China.
Concentrations of 32 elements, Ag, As, Au, Ba, Ca, Ce, Co, Cr, Cs, Eu, Fe, Hf, K, La, Lu, Mo, Na, Nd, Ni, Rb, Sb, Sc, Se, Sm, Sr, Ta, Tb, Th, U, W, Yb, and Zn were determined by instrumental neutron activation analysis (INAA) in the early preserved epiphytic lichens (Parmotrema recticulatum) from the remote southwestern China area in the 1960s, 1980s and 1990s. The concentrations of Ag, As, Ce, Cr, Cs, Eu, Fe, Hf, La, Nd, Ni, Sc, Se, Sm, Tb, U, Yb and Zn were dropped down by the temporal prolongation. The elemental concentration levels obtained from the organisms indicate that the extent of heavy metal atmospheric deposition among the sampling sites has been declining during the past decades.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing.
Zh H
ZhH
Zhang
Z F
ZF
Chai
X Y
XY
Mao
J B
JB
Chen
D002681:China; D004784:Environmental Monitoring / Q000379:methods*; D008011:Lichens / Q000737:chemistry*; D009501:Neutron Activation Analysis; D012016:Reference Values; D014131:Trace Elements / Q000032:analysis*
D014131:Trace Elements