Measurement and prediction of copper ion activity in Lake Orta, Italy

Journal Article · Mon Apr 01 04:00:00 EST 1991 · Environmental Science and Technology; (United States)

DOI:https://doi.org/10.1021/es00016a012· OSTI ID:5148696

Camusso, M; Tartari, G ^[1]; Zirino, A ^[2]

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1. Ist. di Ricerca sulle Acque, Brugherio (Italy)
2. Naval Ocean System Center, San Diego, CA (United States)

A commercial Cu ion selective electrode (ISE) mounted on a field conductivity, temperature, depth probe (CTD) equipped with pH and oxygen sensors was used to measure a profile of Cu ion activity ({alpha}(Cu{sup 2+})) in Lake Orta, Italy. Lake Orta water contains approximately 32-34 {mu}g L{sup {minus}1} Cu from anthropogenic sources. Below the mixed layer, {alpha}-(Cu{sup 2+}) was directly related to the pH of the lake water. In the body of the hypolimnion, measurements of {alpha}(Cu{sup 2+}) obtained from total Cu concentrations. The pH dependence of the activity/concentration of free Cu{sup 2+} was modeled with a simple ion association model of the lake water. The results of the model were verified by a potentiometric titration of a sample of lake water using Cu, pH, and NH{sub 3} ISEs. The titration simulated a forthcoming chemical treatment now in progress.

• OSTI ID: 5148696
• Journal Information: Environmental Science and Technology; (United States), Journal Name: Environmental Science and Technology; (United States) Vol. 25:4; ISSN ESTHA; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
54 ENVIRONMENTAL SCIENCES
540320* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
CALIBRATION
CHEMICAL ANALYSIS
CHEMICAL INDUSTRY
COPPER
DATA
DEVELOPED COUNTRIES
ECOLOGICAL CONCENTRATION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
EQUIPMENT
EUROPE
EXPERIMENTAL DATA
INDUSTRY
INFORMATION
ION SELECTIVE ELECTRODE ANALYSIS
ITALY
LAKES
MEASURING INSTRUMENTS
METALS
MONITORING
NONMETALS
NUMERICAL DATA
OXYGEN
PH VALUE
PHYSICAL PROPERTIES
POLLUTION
PORTABLE EQUIPMENT
POTENTIOMETRY
QUANTITATIVE CHEMICAL ANALYSIS
SURFACE WATERS
TITRATION
TRANSITION ELEMENTS
WATER POLLUTION