Determination of the fluoride content of natural vegetation
In determining the fluoride content of natural vegetation, the first step is to determine how far from a suspected source the fluorides are found in concentrations sufficient to cause injury to livestock. The paper describes the procedures generally employed in sampling and analysis. Factors discussed are selection of species and sampling sites, sampling aspects such as portion of the plant to harvest and amount of material to be collected. Other topics covered are sampling errors related to variability of material, preparation of samples for analysis, moisture determination, and storage of samples. Details are provided for the standard Willard and Winter method of fluoride analysis involving ashing, fusing with NaOH, distillation as fluosilicic acid, and titration with thorium nitrate as indicator. Also discussed are analytical errors, standard samples, and interpretation of sampling and analytical programs.
- Research Organization:
- Stanford Research Institute, Menlo Park, CA
- OSTI ID:
- 5283009
- Journal Information:
- J. Air Pollut. Control Assoc.; (United States), Vol. 6:4; Conference: 49. annual meeting of the Air Pollution Control Association, Buffalo, NY, USA, 20-24 May 1956
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
FLUORIDES
QUANTITATIVE CHEMICAL ANALYSIS
PLANTS
SAMPLE PREPARATION
CONTAMINATION
DATA COVARIANCES
DISTILLATION
DRY ASHING
EXPERIMENTAL DATA
MELTING
MOISTURE
POLLUTION SOURCES
QUALITY CONTROL
SAMPLING
STORAGE
THORIUM NITRATES
TITRATION
ACTINIDE COMPOUNDS
CHEMICAL ANALYSIS
CONTROL
DATA
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INFORMATION
NITRATES
NITROGEN COMPOUNDS
NUMERICAL DATA
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SEPARATION PROCESSES
THORIUM COMPOUNDS
400102* - Chemical & Spectral Procedures
510200 - Environment
Terrestrial- Chemicals Monitoring & Transport- (-1989)