Review of experimental additions of rhodamine wt dye into reactive aquatic environments

Conference · Thu Sep 01 04:00:00 EDT 1988 · Preprints of Papers Presented at National Meeting, Division of Water, Air and Waste Chemistry, American Chemical Society; (USA)

OSTI ID:7019215

Bencala, K E; Zellweger, G W ^[1]

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1. Geological Survey, Menlo Park, CA (USA)

The fluorescent dye rhodamine WT is routinely used in hydrologic studies. It is also being used in field studies of the potential addition or loss of other chemical components to aquatic systems; for example, the determination of atmospheric oxygen transfer to streams or the study of solute transport in an acidic and metal-rich stream. Although rhodamine WT is considered appropriate environmentally as a tracer, toxicological concerns have been raised as the result of laboratory experiments. Smart (1984) placed these concerns in the environmental perspective. Steinheimer and Johnson (1986) have shown that an environmental hazard does not exist when following customary dye-study practices. Additional work by Abidi et al (1986) also has lessened the concerns regarding potential environmental hazards. Because this dye is generally considered effective and nonhazardous, it has been tested in environments in which its stability may be questioned a priori. An appreciable body of knowledge is now growing regarding the chemical fate of rhodamine WT dye in aquatic systems. Smart and Laidlaw (1977) previously presented an extensive evaluation of fluorescent dye properties in natural waters. Their survey included consideration of the impact of temperature, pH, salinity, chlorine, photochemical decay, chemical decay, and biodegradation. This presentation is a review of selected recent evaluations of rhodamine WT in reactive environments that were acidic or that presented significant opportunity for dye sorption onto solids.

• OSTI ID: 7019215
• Report Number(s): CONF-8909234--
• Conference Information: Journal Name: Preprints of Papers Presented at National Meeting, Division of Water, Air and Waste Chemistry, American Chemical Society; (USA) Journal Volume: 28:2
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500 -- Photochemistry
54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
AMINES
CARBOXYLIC ACIDS
CHEMISTRY
DOCUMENT TYPES
DYES
ENVIRONMENTAL TRANSPORT
FRESH WATER
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MASS TRANSFER
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXYGEN COMPOUNDS
PH VALUE
REAGENTS
REVIEWS
RHODAMINES
SORPTION
STABILITY
TEMPERATURE DEPENDENCE
WATER
WATER CHEMISTRY