Effects of suspended solids on the acute toxicity of zinc to Daphnia magna and Pimephales promelas

Journal Article · Mon Dec 01 00:00:00 EST 1986 · Water Resour. Bull.; (United States)

DOI:https://doi.org/10.1111/j.1752-1688.1986.tb00763.x· OSTI ID:6775075

Hall, W S; Dickson, K L; Saleh, F Y; Rodgers, Jr, J H; Wilcox, D; Entazami, A

Current procedures for setting site-specific water quality criteria consider abiotic and biotic factors. Suspended solids were shown to be important in reducing zinc toxicity to water column organisms. At zinc concentrations of approx. = 1 mg/L in solutions with < 100 mg/L of all suspended solids tested, zinc toxicity to D. magna was reduced. Sorption of zinc to suspended solids and/or changes in water chemistry due to the addition of suspended solids appear to have been the factors causing reductions in zinc toxicity to D. magna. Only suspended solids levels of 483-734 mg/L of a type that increased total alkalinity, total hardness, and total dissolved carbon clearly reduced the toxicity of approx. = 20 mg/L zinc to P. promelas. The toxic form of zinc to these organisms appears to reside in the aqueous phase. Characteristics of suspended solids did not influence the partition coefficient of zinc in sorption experiments of less than or equal to 96 h. The slopes of dose-response curves proved to be useful for assessing the potential of an organism to respond to changes in aqueous phase zinc concentrations, and may be a useful biological parameter when considering site-specific water quality criteria for chemicals.

• Research Organization: Johns Hopkins Univ., Shady Side, MD
• OSTI ID: 6775075
• Journal Information: Water Resour. Bull.; (United States), Vol. 22:6
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
54 ENVIRONMENTAL SCIENCES
DAPHNIA
SENSITIVITY
FATHEAD MINNOW
TOTAL SUSPENDED PARTICULATES
ENVIRONMENTAL EFFECTS
ZINC
TOXICITY
AQUEOUS SOLUTIONS
BIOLOGICAL AVAILABILITY
DOSE-RESPONSE RELATIONSHIPS
RESPONSE MODIFYING FACTORS
WATER POLLUTION
WATER QUALITY
ANIMALS
AQUATIC ORGANISMS
ARTHROPODS
BRANCHIOPODS
CRUSTACEANS
DISPERSIONS
ELEMENTS
ENVIRONMENTAL QUALITY
FISHES
INVERTEBRATES
METALS
MIXTURES
PARTICLES
PARTICULATES
POLLUTION
SOLUTIONS
VERTEBRATES
560300* - Chemicals Metabolism &amp; Toxicology
520200 - Environment
Aquatic- Chemicals Monitoring &amp; Transport- (-1989)