A FRESH-WATER BIOPROBE - PERIOSTRACUM OF THE ASIAN CLAM, CORBICULA-FLUMINEA (MULLER) COMBINED WITH LASER MICROPROBE MASS-SPECTROMETER

被引:0
|
作者
HUTCHINSON, PJ
ROLLINS, H
SHARKEY, AG
PREZANT, RS
KIM, YH
HERCULES, DM
机构
[1] INDIANA UNIV PENN,DEPT BIOL,INDIANA,PA 15705
[2] UNIV PITTSBURGH,DEPT CHEM,PITTSBURGH,PA 15260
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中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A freshwater bioprobe, combining the Asiatic Clam, Corbicula fluminea (Muller) and the laser microprobe mass spectrometer (LAMMA), can determine anthro-pogenic chemical contamination of freshwater systems. Laser generated mass spectra from the periostracal layers of clams contaminated with either a salt, potassium bromide, or an aromatic compound, phenol, produce distinctive mass spectral signatures that are different from uncontaminated clams. Uncontaminated clams have characteristic signatures with distinctive spectral peaks less than m/z 41; while exposed clams have many strong peaks well above this m/z. This freshwater bioprobe, using LAMMA to analyze the surface of clams, can be used as a screening tool for monitoring the water-treatment systems, for determining the source of contaminated baseflow and return flow discharge to streams, and for monitoring the water chemistry of a body of water. This system exploits the facility of using the shell instead of soft tissue with the LAMMA and has potential to detect anthropogenically-derived chemical stress.
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页码:95 / 100
页数:6
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