Includes precise directions for a long list of contaminants! All contaminants you can analyze or monitor with a given method are consolidated together to facilitate use. This book is especially valuable for indoor and outdoor air pollution control, industrial hygiene, occupational health, analytical chemists, engineers, health physicists, biologists, toxicologists, and instrument users.

Methods of Air Sampling and Analysis

Summary
The tissues of numerous species of toxic plants from Africa, Australia and South America have been analysed for organic and inorganic fluorine. The presence of organically combined fluorine was established in most of the species but was very variable in concentration. The stems and roots of the African Dichapetalaceae generally contained much more fluorine than did the leaves and the reversed situation was found in the same tissues of the Australian Gastrolobium and Oxylobium species and in the Brazilian Palicourea marcgravii. The seeds of most of the specimens analysed contained large amounts of organic fluorine but was absent in those of Acacia georginae. None of the plant species examined grew in soils which were high in fluorominerals; on the contrary some of the plants grew in soils containing exceptionally low levels of fluorine. A waxy exudate on the outside of the toxic leaves of A. georginae contained significant amounts of organic fluorine and is believed to be part of an excretory mechanism. Only a small proportion of the exudate was identified as fluoroacetate and there appear to be other fluorinated organic compounds present. A crystal formation which contains fluorine was observed in the bark of the roots and stems of Dichapetalaceae and is thought to be also associated with a detoxication process. The crystals appear to be a complex mixture containing calcium oxalate, chloride, fluorine, magnesium and silica. The analytical findings suggest that in the plants in which carbon-fluorine compounds have been established, the site of the synthesis of organic fluorine may vary with the species and that metabolism to inorganic fluoride may take place continuously and simultaneously with the organic bio-synthesis.

https://nph.onlinelibrary.wiley.com/doi/pdf/10.1111/j.1469-8137.1972.tb01965.x

The distribution of organic fluorine in some toxic tropical plants

Determination of Silica and Fluoride in Fluorosilicates

During the past two decades, some major pitfalls in fluorine analysis have been recognized and overcome. Therefore, it is important that facts be separated from fallacies in published literature on levels and forms of fluorine (ionic, bound, covalent, etc.) in biological materials, in order that correct perceptions of physiological, biochemical, and toxicological aspects of inorganic as well as organic fluorine compounds can be formed. Trace amounts of inorganic fluoride in biological samples can now be accurately determined with the fluoride electrode either directly or following diffusion, adsorption, or reverse extraction of fluoride (when necessary). The aluminum monofluoride molecular absorption technique provides an excellent rapid method for determination of trace amounts of inorganic fluoride (in the absence of organic fluorine). Fluorine in most organic fluorine compounds is not available for distillation, diffusion, or reverse-extraction. The sample needs to be ashed (open ashing) or combusted (oxygen flask, oxygen bomb, pyrohydrolysis) for covalently bound fluorine to be converted to fluoride ions. This can now be readily accomplished at room temperature by the reductive cleavage of the C-F bond with the sodium biphenyl reagent. Some recommendations for future research have been made.

Evaluation of Analytical Methods for Fluorine in Biological and Related Materials

Studies of the effects of dietary NaF on dairy cows. I. The physiological effects and the developmental symptoms of fluorosis.

Determination of Fluorine in Plant Materials

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Determination of Fluorine in Plant Materials