PMID- 11296751
OWN - NLM
STAT- MEDLINE
DCOM- 20010719
LR  - 20191104
IS  - 1464-0325 (Print)
IS  - 1464-0325 (Linking)
VI  - 2
IP  - 6
DP  - 2000 Dec
TI  - Plants as biomarkers for monitoring heavy metal contaminants on landfill sites 
      using sequential extraction and inductively coupled plasma atomic emission 
      spectrophotometry (ICP-AES).
PG  - 621-7
AB  - There have been a number of studies investigating metal uptake in plants on 
      contaminated landfill sites, but little on their role as biomarkers to identify 
      metal mobility for continuous monitoring purposes. Vegetation can be used as a 
      biomonitor of site pollution, by identifying the mobilisation of heavy metals and 
      by providing an understanding of their bioavailability. Plants selected were the 
      common nettle (Uritica Dioica), bramble (Rubus Fruticosa) and sycamore (Acer 
      Pseudoplatanus). A study of the soil fractionation was made to investigate the 
      soil properties that are likely to influence metal mobility and a correlation 
      exercise was undertaken to investigate if variations in concentration of metals 
      in vegetation can reflect variations in concentration of the metals in soil. The 
      soil was digested using aqua regia in a microwave closed vessel. The vegetation 
      was digested using both microwave and a hydrogen peroxide-nitric acid mixture, 
      refluxed on a heating block and a comparison made. The certified reference 
      materials (CRMs) used were Standard Reference Material (SRM) 1547, peach leaves 
      for vegetation (NIST) and for soil CRM 143R, sewage sludge-amended soil (BCR). 
      The relative standard deviations (RSDs) were 2-6% for the analyses. Our findings 
      show evidence of phytoextraction by some plants, (especially bramble and nettle), 
      with certain plants, (sycamore) exhibiting signs of phytostabilisation. The 
      evidence suggests that there is a degree of selectivity in metal uptake and 
      partitioning within the plant compartments. It was also possible to correlate 
      mobility phases of certain metals (Pb, Cu and Zn) using the soil and plant 
      record. Zn and Cu exhibited the greatest potential to migrate from the roots to 
      the leaves, with Pb found principally in the roots of ground vegetation. Our 
      results suggest that analysis of bramble leaves, nettle leaves and roots can be 
      used to monitor the mobility of Pb in the soil with nettle, bramble and sycamore 
      leaves to monitor Cu and Zn.
FAU - Murphy, A P
AU  - Murphy AP
AD  - School of Chemical and Life Sciences, University of Greenwich, Wellington Street, 
      Woolwich, London, UK SE18 6PF.
FAU - Coudert, M
AU  - Coudert M
FAU - Barker, J
AU  - Barker J
LA  - eng
PT  - Journal Article
PL  - England
TA  - J Environ Monit
JT  - Journal of environmental monitoring : JEM
JID - 100968688
RN  - 0 (Biomarkers)
RN  - 0 (Metals, Heavy)
SB  - IM
MH  - Biomarkers
MH  - Environmental Monitoring/*methods
MH  - Metals, Heavy/adverse effects/*analysis
MH  - Plant Leaves/chemistry
MH  - Plant Roots/chemistry
MH  - *Plants
MH  - Reference Values
MH  - *Refuse Disposal
MH  - Spectrophotometry, Atomic
EDAT- 2001/04/12 10:00
MHDA- 2001/07/20 10:01
CRDT- 2001/04/12 10:00
PHST- 2001/04/12 10:00 [pubmed]
PHST- 2001/07/20 10:01 [medline]
PHST- 2001/04/12 10:00 [entrez]
AID - 10.1039/b005594h [doi]
PST - ppublish
SO  - J Environ Monit. 2000 Dec;2(6):621-7. doi: 10.1039/b005594h.