THE INFLUENCE OF pH AND SALINITY ON THE TOXICITY OF HEAVY METALS IN SEDIMENT TO THE ESTUARINE CLAM RUDITAPES PHILIPPINARUM

2004 ◽  
Vol 23 (5) ◽  
pp. 1100 ◽  
Author(s):  
Inmaculada Riba ◽  
T. Ángel DelValls ◽  
Jesús M. Forja ◽  
Abelardo Gómez-Parra
Keyword(s):  
Heavy Metals ◽  
Ruditapes Philippinarum ◽  
Influence Of Ph

Adsorption of heavy metals on vermiculite: Influence of pH and organic ligands

2006 ◽  
Vol 299 (2) ◽  
pp. 537-546 ◽  
Author(s):  
M. Malandrino ◽  
O. Abollino ◽  
A. Giacomino ◽  
M. Aceto ◽  
E. Mentasti
Keyword(s):  
Heavy Metals ◽  
Organic Ligands ◽  
Influence Of Ph

scholarly journals Application of hyperspectral imaging technology for rapid identification of Ruditapes philippinarum contaminated by heavy metals

RSC Advances ◽  
2021 ◽  
Vol 11 (54) ◽  
pp. 33939-33951
Author(s):  
Yao Liu ◽  
Fu Qiao ◽  
Shuwen Wang ◽  
Runtao Wang ◽  
Lele Xu
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Hyperspectral Imaging ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Rapid Identification ◽  
Ruditapes Philippinarum ◽  
Imaging Technology ◽  
Training Samples ◽  
Pattern Recognition Analysis

Combined with pattern recognition analysis hyperspectral imaging technology can be used to identify heavy metal contamination in Ruditapes philippinarum rapidly and non-destructively, even with only a small number of training samples.

Bioaccumulation and Toxicity of Dissolved Heavy Metals from the Guadalquivir Estuary After the Aznalcóllar Mining Spill Using Ruditapes philippinarum

2005 ◽  
Vol 48 (2) ◽  
pp. 233-241 ◽  
Author(s):  
M. Laura Martín-Díaz ◽  
Julián Blasco ◽  
Marisa González de Canales ◽  
Diego Sales ◽  
T. Ángel DelValls
Keyword(s):  
Heavy Metals ◽  
Ruditapes Philippinarum ◽  
Guadalquivir Estuary ◽  
Dissolved Heavy Metals

scholarly journals Influence of pH, Temperature and Various Heavy Metals on β-galactosidase Activity in the Crude Extract of Pleurotus ostreatus

2017 ◽  
Vol 5 (1) ◽  
pp. 29
Author(s):  
Tariq H. Shloul ◽  
Omar M. Atrooz ◽  
Mohammad H. Abukhalil
Keyword(s):  
Heavy Metals ◽  
Crude Extract ◽  
Pleurotus Ostreatus ◽  
Competitive Inhibition ◽  
Maximum Activity ◽  
Galactosidase Activity ◽  
Crude Extracts ◽  
Influence Of Ph ◽  
Hydrolysis Of

The aim of this study was to determine the activity of β-galactosidase in the crude extracts of Pleurotus ostreatus in the presence and absence of various heavy metals. β-galactosidase (EC 3.2.1.23), is a hydrolase enzyme which helps in the hydrolysis of lactose into monosaccharides. Characterization of β-galactosidase from Pleurotus ostreatus was achieved using the substrate 2-nitrophenyl β-D-galactopyranoside (ONPG). The pH and temperature profiles of β-galactosidase showed maximum activity at pH 3.0 and at 50°C, respectively. The Vmax  and Km values of β-galactosidase using ONPG as a substrate was found to be 0.571 μmol/min and 0.307 mM, respectively. These results revealed that the β-galactosidase activity in the crude extracts of Pleurotus ostreatus was changed in the presence of different heavy metals. The results indicated that Hg2+ and Mo2+ have an uncompetitive inhibition on the β- galactosidase activity in the extract of Pleurotus ostreatus by decreasing both Km and Vmax values.  while Al3+, Cu2+, Cr3+, Zn2+ and Ni2+  showed mixed inhibition  activity  by decreasing Vmax values and  by increasing Km values. However, Pb2+ was found to act as a non-competitive inhibition by decreasing Vmax value. The findings suggested that crude extract of Pleurotus ostreatus can be used as a source of β-galactosidase for medical and industrial purposes.

Influence of pH on the release and chemical fractionation of heavy metals in sediment from a suburban drainage stream in an arid mine-based oasis

2017 ◽  
Vol 17 (10) ◽  
pp. 2524-2536 ◽  
Author(s):  
Fei Zang ◽  
Shengli Wang ◽  
Zhongren Nan ◽  
Jianmin Ma ◽  
Yu Wang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Chemical Fractionation ◽  
Influence Of Ph
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