1991
DOI: 10.1590/s0102-311x1991000100008
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Abstract: Procurou-se avaliar métodos e soluções tradicionalmente utilizados na evidenciação de ovos de helmintos parásitos, de fezes ou do solo, em amostras de areia de praia experimentalmente contaminadas com ovos de Ascaris lumbricoides, Trichuris trichiura, Toxocara canis e Ancylostoma sp. Das soluções classicamente utilizadas, a de Dicromato de Sódio (d= 1,350) foi a que apresentou melhores resultados (índice de recuperação = 50%) para ovos de Ascaris, em 24 horas de observação. As duas soluções propostas: Carbonat… Show more

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Cited by 19 publications
(27 citation statements)
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“…This type of monitoring can therefore be an important way to detect biological contamination (SANTARÉM et al, 1998). Our results are in agreement with those reported by Rocha et al (2011) (SILVA et al, 1991). That fact can be explained because the great majority of eggs of gastrointestinal helminths are heavy, favoring their detection by sedimentation.…”
Section: Resultssupporting
confidence: 92%
See 1 more Smart Citation
“…This type of monitoring can therefore be an important way to detect biological contamination (SANTARÉM et al, 1998). Our results are in agreement with those reported by Rocha et al (2011) (SILVA et al, 1991). That fact can be explained because the great majority of eggs of gastrointestinal helminths are heavy, favoring their detection by sedimentation.…”
Section: Resultssupporting
confidence: 92%
“…In this context, the contamination by animal droppings in public places, such as the sand at beaches and parks and soil around houses, is an important risk factor for the transmission of these agents, especially in places with precarious sanitation. That fact is especially important because of the increasing urban sprawl in Brazil, with large concentrations of people on the peripheries of large cities in places that often have poor sanitation services, favoring the environmental contamination process (SILVA et al, 1991;OGE & OGE, 2000;SILVA et al, 2009). Silva et al (2009) According to the current legislation and regulations in many Brazilian cities, the sanitary conditions of recreational areas of primary contact are based only on bacteriological bioindicators, especially determination of the total and fecal coliforms (MENDES et al, 1993;BOUKAI, 2005), without considering the risks associated with contamination by geohelminths and protozoa.…”
Section: Introductionmentioning
confidence: 99%
“…An important publication from SILVA et al 22 in 1991 evaluated the experimental contamination of beach sand by enteroparasites and the search for helminth eggs, aiming to study the suitability of methods traditionally used for examination of the soil of sandy beaches, by comparison to other solutions not yet tested for this purpose. The research showed that the following solutions are the most efficient: Sodium bicromate; Sodium chloride; Sodium hydroxide and zinc sulfate, instead of Sodium hypoclorite, which alters or destroy the eggs from several species of helminthes, impairing their identification 12,14 .…”
Section: Discussionmentioning
confidence: 99%
“…The presence of parasitic forms in the soil can also be considered an important biological indicator of fecal and urinary tract contamination, serving as an alert for the transmission of other agents that injure the population (SILVA et al, 1991). The prevalence of parasite eggs observed may also be associated with the time of the year in which the study was conducted, since other authors correlate environmental temperature and rainfall with the number of structures found in sand analyses (ROCHA et al, 2011).…”
Section: Resultsmentioning
confidence: 99%