Toxicity testing of NCSRP priority substances for the development of soil quality criteria

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:37471

Cureton, P M ^[1]; Balch, G; Lintott, D; Poirrier, K; Goudey, S ^[2]

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1. Environment Canada, Ottawa, Ontario (Canada). Evaluation and Interpretation Branch
2. HydroQual Labs. Ltd., Calgary, Alberta (Canada)

The effects of 14 National Contaminated Sites Remediation Program (NCSRP) priority substances was measured on emergence and root elongation in lettuce (Lactuca saliva) and radish (Raphanus saliva) and on survival of the earthworm Eisenia foetida. The worm and seedling emergence tests were conducted in an artificial soil mixture composed of 10% peat moss, 20% kaolinite clay, and 70% silica sand (70 mesh) spiked with the contaminant. The root elongation tests were conducted on filter paper moistened with the contaminant solution. The following endpoints were derived on nominal and measured concentrations: NOEC, LOEC, the LC{sub 50} and LC{sub 25} for earthworm mortality and the EC{sub 50} and EC{sub 25} for emergence and root elongation. The contaminants tested included: arsenic, cadmium, chromium, copper, lead, mercury, zinc, vanadium, benzo(a)pyrene, cyanide, naphthalene, ethylene glycol, pentachlorophenol, and phenol. Each test was repeated three times using different batches of freshly prepared soil, seed lots and worm cultures. The authors will present the findings and discuss the application of toxicity test results in developing generic soil quality criteria.

• OSTI ID: 37471
• Report Number(s): CONF-9410273--
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
56 BIOLOGY AND MEDICINE
APPLIED STUDIES
ANNELIDS
BENZOPYRENE
CHLORINATED AROMATIC HYDROCARBONS
CONTAMINATION
CYANIDES
GLYCOLS
LETTUCE
METALS
NAPHTHALENE
PHENOL
RADISHES
SENSITIVITY
SOILS
STANDARDS
TOXICITY