Ninth in ASTM series, this volume addresses the following subjects:
• the impact of genetically engineered microorganisms in aquatic environments
• bioaccumulation and bio transformation of xenobiotics
• uality assurance programs for the hydra reaggregation test and the hydrogen oxidation soil bioassy
• biomonitoring
• new test methods
• and the relationship between sediment and toxicity and bioavailabilty of chemicals.