Determinação de metais em óleos lubrificantes, provenientes de motores de ônibus urbano, utilizando a FAAS

Coelho, Ronaldo Cunha; Neto, José Machado Moita; Moura, Carla Verônica Rodarte de; Moura, Edmílson Miranda de

doi:10.1590/s0100-40422010000900008

Cited by 15 publications

(10 citation statements)

References 18 publications

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“…Cu, Fe and Zn found in the atmosphere may be of vehicular origin, since one of the emission sources of these elements refers to the wearing of automotive parts, tires and brakes, whose particulate matter deposited on different surfaces is continuously resuspended in the environment (Qi et al 2016). These elements are also found in the composition of motor oils, which have potential to increase their concentration in the environment (Silveira et al 2010).…”

Section: Short Communication the Use Of Parmotrema Tinctorum (Parmeli...mentioning

confidence: 99%

The use of Parmotrema tinctorum (Parmeliaceae) as a bioindicator of air pollution

Costa¹,

Ferreira²,

Anhê³

et al. 2021

Rodriguésia

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Air quality monitoring by automatic stations, although efficient, does not allow evaluating the effects of pollution on living organisms and communities. Thus, the aim of the present study was to use lichens of the Parmotrema tinctorum species in active air quality biomonitoring. We used a new methodology of chlorosis area analyses in QGis software, as low-cost and complementary tool to physicochemical methods. Samples of the aforementioned species were exposed to atmospheric pollution for 30 consecutive days in the dry and rainy seasons, in urban and industrial regions. The chlorosis rate (34% of the lichen thalli, on average) and the accumulation of sulfur (1.1 g.kg-1, on average) were higher in the samples of lichens exposed in the industrial region, in the dry season. There was a moderate-to-high positive correlation between chlorosis rate and lichen content of nitrogen, sulfur, iron and zinc, in the dry season, mainly with sulfur (r = 0.71). The results confirmed the sensitive of P. tinctorum to atmospheric pollution, even after a short exposure time. Such new active biomonitoring methodology (chlorosis analysis in the QGis) can be used in future studies of air quality assessment by environmental and health surveillance managers.

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Section: Short Communication the Use Of Parmotrema Tinctorum (Parmeli...mentioning

confidence: 99%

The use of Parmotrema tinctorum (Parmeliaceae) as a bioindicator of air pollution

Costa¹,

Ferreira²,

Anhê³

et al. 2021

Rodriguésia

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“…estes aditivos, incluem-se compostos organometálicos de níquel como agente antidesgaste, complexos orgânicos de chumbo como aditivo de extrema pressão e dialquiltiofosfato de zinco (ZnDDP) como inibidor de corrosão, antioxidante e antidesgaste [17][18].…”

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Degradação de óleos lubrificantes em motores estacionários movidos a biogas

2018

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Com o crescente interesse do uso de biogás como fonte de energia elétrica por meio de motores ciclo Otto, as condições de trabalho destes motores se tornam relevantes para maior eficiência de conversão energética e maior tempo de uso. A utilização correta de óleos lubrificantes permite ampliar a quantidade de horas motor, sem necessidade de troca. Avaliar a qualidade e a degradação dos óleos lubrificantes neste sistema torna-se uma premissa importante, uma vez que o óleo degradado diminui a capacidade de proteção nas peças móveis do motor e aumenta o superaquecimento do sistema. A contaminação por agentes externos eleva a chance do desenvolvimento de borras e aumentando a corrosão de peças. Este trabalho realizou o controle de qualidade de óleos lubrificantes em motores estacionários movidos a biogás. Os óleos foram analisados por espectrofotometria na região do infravermelho, na qual foram verificadas as bandas de oxidação, presença de água, fuligem, nitratos e sulfato, sendo determinada também a acidez total do óleo lubrificante, de acordo com a norma ASTM D4739, preconizada pela Resolução ANP nº 10/2000. O principal problema encontrado foi a quantidade de água presente nos motores, acima do limite de 0,03%, indicando algum problema de vazamento/contaminação no motor. Os testes controlados com diferentes gases apresentaram pouca variação em relação à comparação com ar, ao controle utilizado e ao gás N2, sendo que os principais parâmetros afetados foram a oxidação e a acidez, pois os outros parâmetros não apresentaram diferenças significativas entre si.

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“…Fishing ships with combustion engine also used to freight transport in the region, they use lubricant oil to reduce engine friction or wear [2,5] . However, when it reaches the maximum life time losing its functional characteristics, it become dark and dense named "burned oil" commonly discarded [6,7] .…”

Section: Introductionmentioning

confidence: 99%

Chemical exposure hazardous for fish Hyphessobrycon eques through the incorrect release of oil in Amazon region

Sousa

Silva

Costa

et al. 2020

Jour. of fish. Sci.

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Incorrect discard of oil used by fishing ship in the brazilian north region has become a common activity. Despite the possible hazard to the aquatic organisms, still missing scientific data about their toxicity. Thus, this study aimed to evaluate the stress and lethality caused by lubricant oil (FSAOLU) on fish Hyphessobrycon eques. Therefore, it was used six different concentration diluted in water (0, 22, 24, 26, 28, 30 and 32% of oil) and three replaces during 96 hours. At the end or during the experiment (with dying fish), it was collected blood samples (cutting the caudal fin) to determine physiological changes. The FSAOLU showed mean lethal dose (LD50-96h) of 27.36%, classified as toxic causing alterations in glucose values from the 26%. The greater dilution of FSAOLU (32%) increased 115% in glucose values when compared to the control. Thus, lubricant oil when discarded in water, it present hazard to the aquatic organisms causing stress and mortality for fish being necessary adequate management to discard of this residue.

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Determinação de metais em óleos lubrificantes, provenientes de motores de ônibus urbano, utilizando a FAAS

Cited by 15 publications

References 18 publications

The use of Parmotrema tinctorum (Parmeliaceae) as a bioindicator of air pollution

The use of Parmotrema tinctorum (Parmeliaceae) as a bioindicator of air pollution

Degradação de óleos lubrificantes em motores estacionários movidos a biogas

Chemical exposure hazardous for fish Hyphessobrycon eques through the incorrect release of oil in Amazon region

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