Accumulation of chromium and lead in bryophytes and pteridophytes in a stream affected by tannery wastewater.
The concentrations of Cr and Pb were determined in bryophytes and pteridophytes sampled in a stream near a tannery in Guarapuava, southern Brazil. The concentrations of Cr and Pb were measured by cathodic and anodic voltammetry, respectively. These plants were used to evaluate the spatial distribution of elements in the examined stream, and contained elevated levels of Cr (0.71-24.07 μg/g) and Pb (4.33-24.20 μg/g). Chromium levels in plants near the tannery greatly exceeded background levels, indicating a severe to extreme degree of contamination with this metal. Lead levels were elevated to a lesser degree, indicating slight to moderate contamination for most plants collected near the tannery.
Departamento de Química, Universidade Estadual do Centro-Oeste - UNICENTRO, Rua Simeão Camargo Varela de Sá, 3, CEP 85040-080, Guarapuava, PR, Brazil.
Carolina Marília Martins
CM
Repula
Sueli Pércio
SP
Quináia
Bruna Kauely
BK
de Campos
Edgard Moreira
EM
Ganzarolli
Mauro Chierici
MC
Lopes
D044002:Bryophyta / Q000378:metabolism*; D002857:Chromium / Q000378:metabolism*; D004784:Environmental Monitoring; D029624:Ferns / Q000378:metabolism*; D007854:Lead / Q000378:metabolism*; D045483:Rivers / Q000737:chemistry; D013633:Tanning; D014874:Water Pollutants, Chemical / Q000378:metabolism*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
D014874:Water Pollutants, Chemical; D002857:Chromium; D007854:Lead