Residue analytical limit of detectability

Sutherland, George L.

doi:10.1007/978-1-4615-8398-1_4

Cited by 8 publications

(7 citation statements)

References 2 publications

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“…Confusion arises when instrumental and method detection limits are compared and sometimes used interchangeably (9). Moreover, detection and determination have also been conceptually intertwined by some investigators (10). Although definitions of the detection limit for a given analyte vary, investigators concur that the detection limit should be related to the standard deviation of the measured values at or near zero concentration of the analyte (II).…”

mentioning

confidence: 99%

Trace analyses for wastewaters

Glaser¹,

Foerst²,

McKee³

et al. 1981

Environ. Sci. Technol.

440

215

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mentioning

confidence: 99%

Trace analyses for wastewaters

Glaser¹,

Foerst²,

McKee³

et al. 1981

Environ. Sci. Technol.

440

215

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Section: Resultsmentioning

confidence: 99%

Chronic toxicity and residues from feeding nemacide [O-(2,4-dichlorophenyl)O,O-diethyl phosphorothioate] to laying hens

Sherman¹,

Beck²,

Herrick³

1972

J. Agric. Food Chem.

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Unknowns A and B represented a larger percentage of the recovered radioactivity in the white than in the yolk. In particular, Unknown B constituted 46.3% of the white residues, as compared to 7.0% of that in the yolk. Because of the much larger total 14C residues in yolk, the large percentage of Unknowns A and B in the white had relatively little effect on the overall greater amount of total 14C residues in the yolk.the feed of laying hens for 55 weeks at 50, 100, 200, and 800 ppm. Excellent control of the housefly, Musca domestica L., and the blowfly, Chrysomya megacephala (F.), was obtained in droppings from the hens fed 50 ppm but higher levels were required for control of larvae of Parasarcophaga argyrostoma (Robineau-Desvoidy) and Fannia pusio (Wiedemann). No hen mortality occurred that could be attributed to treatment but there was a direct relationship between Nemacide concentration and blood plasma cholinesterase inhibition. Feed consump-tion, weight gain, egg production, shell thickness, egg weight, egg quality, and odor were normal but eggs from hens treated with 800 ppm had a less desirable flavor than eggs from untreated hens. A glc electron capture method was developed to measure nanogram amounts of Nemacide and 2,4-dichlorophenol. The limits of detectability were 0.005 to 0.086 ppm for Nemacide and 0.006 to 0.208 ppm for 2,4-dichlorophenol. Appreciable residues of Nemacide were found in the liver, muscle, fat, and yolk of treated hens, while 2,4-dichlorophenol residues were detected only in the liver and yolk.

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“…The corrected limits of detectability based on the chromatographic response of untreated control samples were calculated at the 99% confidence level (Sutherland, 1965) and are given in Table V. No residues of Compound 4072 beyond the limits of detectability were found in any of the eggs or tissues analyzed, neither were residues of the metabolite 2,2 ',4 '-trichloroacetophenone beyond the limits of detectability found in the muscle or egg whites of hens administered Compound 4072 in the feed.…”

Section: Resultsmentioning

confidence: 99%