Fluorometric Analysis

White, Charles E.; Weissler, Alfred

doi:10.1021/ac60185a009

Cited by 13 publications

(7 citation statements)

References 96 publications

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“…The use of fluorescence spectroscopy in biology and medicine, for example, is the subject of a recent book (156). General analytical applications and instrumentation, also, were reviewed recently (5,174). The fluorescence spectra referred to are of two types: (a) fluorescence emission spectra, obtained by scanning for fluorescence emission with a fixed excitation wave length, and (b) fluorescence excitation spectra, obtained by scanning for fluorescence excitation with a fixed emission wave length.…”

mentioning

confidence: 99%

Effects of the Environment on the Fluorescence of Aromatic Compounds in Solution.

Duuren¹

1963

Chem. Rev.

130

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mentioning

confidence: 99%

Effects of the Environment on the Fluorescence of Aromatic Compounds in Solution.

Duuren¹

1963

Chem. Rev.

130

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“…Nevertheless, direct measurement of fl uorescence is feasible, using a simple fl uorimeter. White and Weissler (1972) ( White and Weissler 1972 ) discussed the fl uorimetric quantifi cation of the residues of gibberellin sprays on cherries, as well as the quantifi cation of chlorinated and phosphorothioate pesticides.…”

Section: Analytical Methods For Pesticide Detectionmentioning

confidence: 99%

Optical analytical methods for detection of pesticides

Ben-Zur

Hake

Hassoon

et al. 2011

Reviews in Analytical Chemistry

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The global pesticide market has grown steadily since the 1940s, with the agricultural sector being the largest user of pesticides. The effect of pesticides on human health is manifested either through direct exposure to the material or indirect exposure to contaminated resources. Farmers and those dwelling near areas where pesticides are used may suffer from direct exposure, while the general population might be exposed indirectly, for example, by drinking contaminated water. Exposure to pesticides may cause a variety of symptoms, including headaches, dizziness, and vomiting, damage the nervous system, and even cause death. The risks involved in pesticide use include air pollution and soil and water contamination. The environmental implications of pesticide use include development of resistance among pests, a decline in biodiversity, interruption of the food chain, and disruption of the ecological balance. Pesticide use may also cause changes in physical parameters of the ecosystem. Effective activity of pesticides requires reaching proper leaf coverage. To prevent pest attacks due to insuffi cient leaf coverage, farmers tend to apply pesticides in excess. In view of the environmental and health implications of pesticide use, there is a clear need to limit pesticide application. Yet farmers lack the means to perform real-time in situ assessment of leaf coverage. Existing pesticide detection methods are complex, time-consuming, and unsuited to fi eld application. Optical methods have the potential to provide quick assessments and can be used in situ. Several optical methods for detection of pesticides in general and on leaves in particular were developed. The fi ndings indicated that the main problems in pesticide detection using fl uorescence are the low autofl uorescence of the pesticides and the nonreproducible a Dedication: This review is dedicated to the late Professor Angelika Anders-von Ahlften of Leibniz University of Hanover (1949-2008). She initiated and promoted with much enthusiasm the research on pesticide detection on plants. She took an active part in this project, with the intention to contribute to reducing the global pesticide usage and protecting the environment. The authors and the whole community are missing her.

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“…With organic solvents, some complexing agents form a true solution chelate with Al: a complex is formed between Al and 8-hydroxyquinoline in chloroform and the resulting complex is determined spectrophotometrically (18). The most sensitive chemical methods for determining Al are the fluorescence methods (26). Reagents used for the fluorescent detection of Al are Pontachrome Blue Black R (27), morin (28), 2,4-bis-[N,N'-di-(carboxymethyl)aminomethyl] fluorescein (29), and 8-hydroxyquinoline (18).…”

Section: Colorimetric and Fluorescence Methodsmentioning

confidence: 99%

“…Another source of pollution is the exposure of geologic formations. In New Jersey, Toth (138) found that two tributaries' to the impoundment of Matawan'Lake contributed Environmental Health Perspectives (746) Great Basin (W. desert (746) region, Ore., Nev., Utah, (746) Calif.) enough sulfuric acid, produced by the oxidation of exposed iron sulfide, to result in a pH of 2.8 in the lake with a soluble Al content of more than [25][26][27][28][29][30] ,ug/ml and Fe content of 15-25 Ag/ml, enough to kill almost all plant and animal life. He cautions that the damming of a streamto form an impoundment without checking the composition of the tributaries may lead to the creation of a sterile impoundment.…”

Section: Aluminum In Watersmentioning

confidence: 99%

Aluminum in the Environment and Human Health

Sorenson¹,

Campbell²,

Tepper³

et al. 1974

Environ Health Perspect

214

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The review of over 800 references on aluminum (Al) published since the mid-fifties covers the occurrence of Al in soil, air, water, plants and food products, as well as air and water pollution problems. In addition, the existing quality criteria, the biology and toxicology of Al, and the therapeutic and medical uses are presented. It is concluded that absorption and retention or accumulation of Al in humans occurs at lower levels of intake than had been assumed formerly. However, levels of 5 to 50 times the normal daily intake do not appear to interfere with other metabolic processes. The adverse effects of Al reported in the more recent years resulted from the inhalation or ingestion of Al in concentrations many times greater than the amounts present under normal circumstances. As in the past, there is still no need for concern by the public or producers of Al or its products concerning hazards to human health derived from well established and extensively used products.

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Fluorometric Analysis

Cited by 13 publications

References 96 publications

Effects of the Environment on the Fluorescence of Aromatic Compounds in Solution.

Effects of the Environment on the Fluorescence of Aromatic Compounds in Solution.

Optical analytical methods for detection of pesticides

Aluminum in the Environment and Human Health

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