THE QUANTITATIVE DETERMINATION OF PERCHLORATES.<sup>2</sup>

Lamb, Arthur B.; Marden, J. W.

doi:10.1021/ja02207a008

Cited by 10 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…yet there is some scientific data on this technique. Perchlorate can be determined in the complex with nitrone or tetraphenylphosphonium perchlorate [47][48] or after reduction to chloride ions in form of silver chloride [49]. Detection limit of these methods is about 10 mg/L, so the sensitivity is too low for current applications and needs.…”

Section: Methods Of Productionmentioning

confidence: 99%

Perchlorate – properties, toxicity and human health effects: an updated review

Niziński

Błażewicz

Kończyk

et al. 2020

Reviews on Environmental Health

View full text Add to dashboard Cite

Interest in perchlorate as environmental pollutant has increased since 1997, when high concentrations have been found in the waters of the Colorado River, USA. Perchlorate is very persistent in nature and it is slowly degraded. Although harmful effects of large doses of perchlorate on thyroid function have been proven, the environmental effects are still unclear. The primary objective of the present review is to collect prevailing data of perchlorate exposure and to discuss its impact on human health. The results show that more than 50% of reviewed works found significant associations of perchlorate exposure and human health. This review consists of the following sections: general information of perchlorate sources, its properties and determination methods, role and sources in human body including food and water intake, overview of the scientific literature on the research on the effect of perchlorate on human health from 2010 to 2020. Finally, conclusions and recommendations on future perchlorate studies concerning human exposure are presented.

show abstract

Section: Methods Of Productionmentioning

confidence: 99%

Perchlorate – properties, toxicity and human health effects: an updated review

Niziński

Błażewicz

Kończyk

et al. 2020

Reviews on Environmental Health

View full text Add to dashboard Cite

show abstract

“…If this latter is determined volumetrically, the whole analysis becomes a very rapid one." 84 The first use of the analytical reagent nitron, an N-heterocyclic carbene, in a gravimetric method was reported in 1917, for the determination of ammonium perchlorate in explosives. 85 In 1939, American workers determined the perchlorate ion iodiometrically by precipitation as tetraphenylarsonium perchlorate, followed by titration with standard iodine.…”

Section: Fixed Nitrogen From the 1920smentioning

confidence: 99%

The Emerging Role of Titrimetry in Late Nineteenth-Century Industrial Problem Solving: The Example of Trace Analysis for Perchlorate in Chile Saltpetre

Travis

2014

Ambix

View full text Add to dashboard Cite

Trace analysis is usually associated with high-sensitivity analysis instrumentation. It became fully established from the 1960s following consensus among different groups of practitioners over protocols, reference materials, sensitivity, and accuracy and precision. As a consequence, wet chemical methods have been relegated to a secondary role, contrasting with their tremendous historical significance in detecting, identifying, and estimating small amounts of material. This is particularly relevant to the state-of-the-science analytical determinations stimulated by the effect of minor components in commodities of commercial importance. Here, I select a single example: attempts made during the 1890s to determine the amount of potassium perchlorate (KCIO4) that occurs in Chile saltpetre (sodium nitrate). The application of titrimetry, particularly the adaptation of Volhard's method for chloride analysis, was crucial in the efforts to estimate perchlorate in the nitrate used for explosives and to track the impact of perchlorate concentrations on certain important agricultural crops.

show abstract

“…However, these early methods for detecting perchlorate were crude and insensitive. Perchlorate was reduced to chloride, and further reacted with silver nitrate to form a silver chloride precipitate, that could then be weighed and correlated to the perchlorate concentration (Lamb and Marden, 1912;Willard and Thompson, 1930). These methods Colorimetric .100 000 Estimated detection limit from data provided Dafert (1908Dafert ( ) 1912 Gravimetric .100 000 Estimated detection limit from data provided Lamb andMarden (1912) 1926 Colorimetric .100 000 Estimated detection limit from data provided Junck (1926Junck ( ) 1930 Gravimetric .100 000 Estimated detection limit from data provided Willard andThompson (1930) 1958 Colorimetric .100 000 Estimated detection limit from data provided Feigl andGoldstein (1958) 1959 Colorimetric .100 000 Estimated detection limit from data provided Nabar andRamachandran (1959) 1968 Colorimetric .100 000 Estimated detection limit from data provided Hayes (1968) 1968 Atomic Absorption 700 Requires complexation with copper Collison andBoltz (1968) 1979 Colorimetric .20 000 Estimated detection limit from data provided Shahine and Khamis (1979) 1980 Raman Spectroscopy .1000 Less commonly used instrumentation Miller and Macklin (1980) 1985 Colorimetric 20-50 Extremely high false-positive/ poor QA/QC Margolis (1986) 1993 Capillary Electrophoresis 2-10 Custom built detector/ insufficient QA/QC Avdalovic et al, (1993) (Continued) liberated the anions in an aqueous solution, followed by colorimetric titration with various reagents.…”

Section: Perchlorate Analysis: Premodern Eramentioning

confidence: 99%