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Determination of copper and zinc in soil extracts by atomic absorption spectrophometry using APDC-MIBK solvent extraction

Journal Article · · Soil Sci.; (United States)
OSTI ID:6602336
; ;
This research was conducted to determine the usefulness of ammonium pyrrolidine dithiocarbamate-methyl isobutyl ketone system (APDC-MIBK) solvent extraction for precleaning copper and zinc from 0.05 M CaCl/sub 2/ and 2.5 percent HOAc and for concentrating the metals from soil extracts with the two reagents. The system was effective in removng both Cu and Zn from 0.05 M CaCl/sub 2/, but only Cu from 2.5 percent HOAc without prior pH adjustment of the solutions. Simultaneous extraction of Cu and Zn from both 0.05 M CaCl/sub 2/ and 2.5 percent HOAc soil extracts was carried out by adjusting the pH of the soil extracts to 5.0. The undesirable effects due to iron-APDC precipitate formation in the 2.5 percent HOAc soil extracts were overcome by using a phase separation filter paper. The metal contents in soil extracts determined by this technique were in good agreement with those determined by an evaporation-concentration technique.
Research Organization:
Virginia Polytechnic Inst. and State Univ., Blacksburg
OSTI ID:
6602336
Journal Information:
Soil Sci.; (United States), Journal Name: Soil Sci.; (United States) Vol. 131:2; ISSN SOSCA
Country of Publication:
United States
Language:
English

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Related Subjects

510500* -- Environment
Terrestrial-- Site Resource & Use Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
ABSORPTION SPECTROSCOPY
ACETIC ACID
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CHLORIDES
CALCIUM COMPOUNDS
CALCIUM HALIDES
CARBOXYLIC ACIDS
CHEMICAL ANALYSIS
CHLORIDES
CHLORINE COMPOUNDS
COPPER
DATA
DATA COMPILATION
ELEMENTS
EXTRACTION
HALIDES
HALOGEN COMPOUNDS
INFORMATION
IRON COMPOUNDS
LAND POLLUTION
METALS
MONOCARBOXYLIC ACIDS
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
POLLUTION
SEPARATION PROCESSES
SOILS
SOLVENT EXTRACTION
SPECTROPHOTOMETRY
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
ZINC