Determination of Chlorobenzenes in Sewage Sludge by Solid-Liquid Extraction with Purification at Low Temperature and Gas Chromatography Mass Spectrometry

Pinho, Gevany Paulino de; Silvério, Flaviano Oliveira; Evangelista, Gabriela Fonseca; Mesquita, Laila V.; Barbosa, Érica Soares

doi:10.5935/0103-5053.20140109

Cited by 3 publications

(3 citation statements)

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“…The sewage sludge was collected in the Treatment Station of Montes Claros (ETE Vieira), in September 2013 and showed the following composition: organic matter = 42.5 dag kg -¹; pH in water = 6.2; P 2 O 5 (total) = 25 g dm -3 ; K 2 O (total) = 2.9 mg dm -3 ; Ca (total) = 75 g dm -³; Mg (total) = 26 g dm -3 ; S = 10.1 g dm -³; Si (soluble) = 14.2 mg dm -3 (Tedesco et al, 1995). The initial concentrations of chlorobenzenes found in the sewage sludge, prior to the installation of the plots, were: 0.004 mg kg -1 of 1,4-CB and 0.023 mg kg -1 of 1,3,5-CB (Pinho et al, 2014). Immediately after filling the plots with sewage sludge, cuttings of P. purpureum Shum.…”

Section: Methodsmentioning

confidence: 99%

“…For the plot without grass cultivation, sampling was performed at 150 days from the beginning of the study. CBs were extracted using the solidliquid extraction technique (Pinho et al, 2014). The present study monitored two contaminants: dichlorobenzene (1,4-CB), with retention time of 7.004 min and trichlorobenzene (1,3,5-CB), with retention time of 10.400 min.…”

Section: Methodsmentioning

confidence: 99%

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Phytoremediation of chlorobenzenes in sewage sludge cultivated with Pennisetum purpureum at different times

Alvarenga

Sampaio

Pinho

et al. 2017

Rev. bras. eng. agríc. ambient.

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A B S T R A C TOne of the major limitations of sewage sludge agricultural use is the presence of chlorobenzenes (CBs), which are toxic to the environment. The use of techniques of sewage sludge phytoremediation can be an important alternative for the degradation of these substances in the waste. The aim of this study was to evaluate the effect of Pennisetum purpureum cultivation time on the reduction of the concentrations of 1,4-CB and 1,3,5-CB in sewage sludge. The experiment was conducted in a greenhouse, using a randomized block design. The treatments consisted of five periods of Poaceae cultivation in sewage sludge plots (30, 60, 90, 120 and 150 days) and a control (sludge plots not cultivated). At 150 days, the control, in the layer of 0-20 cm, showed higher concentrations of 1,3,5-CB, compared with the same layer of cultivated sludge. In the cultivated sludge, in the 10-20 cm layer, there was a decrease in the concentrations of 1,4-CB, while in the layer of 20-30 cm, both concentrations decreased. The observed reductions may be the result of mutualistic interactions between decomposer organisms and the roots of P. purpureum, favoring the decomposition process.Fitorremediação de clorobenzenos em lodo de esgoto cultivado com Pennisetum purpureum em diferentes períodos R E S U M O Uma das grandes limitações do uso agrícola de alguns lodos de esgotos é a presença de clorobenzenos (CBs) que são tóxicos ao meio ambiente. O uso de técnicas de fitorremediação no lodo de esgoto pode ser uma importante alternativa para a degradação dessas substâncias no resíduo. Objetivou-se, neste trabalho, avaliar o tempo de cultivo de Pennisetum purpureum na redução das concentrações de 1,4-CB e 1,3,5-CB em lodo de esgoto. O experimento foi realizado em casa de vegetação, utilizando-se o delineamento em blocos casualizados. Os tratamentos corresponderam a cinco períodos do cultivo da Poaceae em parcelas de lodo de esgoto (30; 60; 90; 120 e 150 dias a partir do plantio de estacas) e uma testemunha (parcelas de lodo não cultivado). Aos 150 dias a testemunha, na camada de 0-20 cm, apresentou maiores concentrações de 1,3,5-CB, quando comparada à mesma camada do lodo cultivado. Já no lodo cultivado na camada de 10-20 cm, houve decréscimo das concentrações de 1,4-CB, enquanto, na camada de 20-30 cm, tanto as concentrações de 1,4-CB quanto de 1,3,5-CB diminuíram. As reduções observadas podem ser resultado das interações mutualísticas entre organismos decompositores e as raízes de P. purpureum, favorecendo o processo de remediação.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Phytoremediation of chlorobenzenes in sewage sludge cultivated with Pennisetum purpureum at different times

Alvarenga

Sampaio

Pinho

et al. 2017

Rev. bras. eng. agríc. ambient.

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“…For the optimization of the SLE-LTP procedure, we first considered the methods of detection of organic chemical contaminants in sewage sludge reported in the literature. [30][31][32] After evaluating the best contaminant extraction conditions in these previous studies, we proposed a strategy for the extraction of organochlorine pesticides in sewage sludge. One important point to considerer is that the first procedure performed, which was similar to that described in the procedure section, but without using the sorbent, provided satisfactory pesticide recoveries, ranging from 71 to 124%.…”

Section: Extraction Methodsmentioning

confidence: 99%

Easy and fast extraction methods to determine organochlorine pesticides in sewage sludge, soil, and water samples based at low temperature

Mesquita

Santos

Cacique

et al. 2017

Journal of Environmental Science and Health, Part B

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Organochlorine pesticides present in sewage sludge can contaminate soil and water when they are used as either fertilizer or agricultural soil conditioner. In this study, the technique solid-liquid extraction with low temperature purification was optimized and validated for determination of ten organochlorine pesticides in sewage sludge and soil samples. Liquid-liquid extraction with low temperature purification was also validated for the same compounds in water. Analyses were performed by gas chromatography-mass spectrometry operating in the selective ion monitoring mode. After optimization, the methods showed recoveries between 70% and 115% with relative standard deviation lower than 13% for all target analytes in the three matrices. The linearity was demonstrated in the range of 20 to 70 µg L, 0.5 to 60 µg L, and 3 to 13 µg L, for sludge, soil, and acetonitrile, respectively. The limit of quantification ranged between 2 and 40 µg kg, 1 and 6 µg kg, and 0.5 µg L for sludge, soil, and water, respectively. The methods were used in the study of pesticide lixiviation carried out in a poly vinyl chlorine column filled with soil, which had its surface layer mixed with sludge. The results showed that pesticides are not leached into soil, part of them is adsorbed by the sewage sludge (4-40%), and most pesticides are lost by volatilization.

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A Comprehensive Review of Organochlorine Pesticide Monitoring in Agricultural Soils: The Silent Threat of a Conventional Agricultural Past

Tzanetou

Karasali

2022

Agriculture

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Soil constitutes the central environmental compartment that, primarily due to anthropogenic activities, is the recipient of several contaminants. Among these are organochlorine pesticides (OCPs), which are of major concern, even though they were banned decades ago due to their persistence and the health effects they can elicit. In this review, an overview of monitoring studies regarding OCPs in soils published over the last 30 years along with the development of analytical methods and extraction procedures for their determination in soil are presented. The presented synopsis verifies the soil contamination by OCPs during the last several decades. Soil pollution by OCPs should be an essential aspect of the characterization of whole soil quality, considering that a significant percent of soils on a global scale are in the borderline of suitability for cultivation and pertinent activities. The latter, to an extent, is attributed to the presence of organic contaminants, especially those of persistent chemical natures.

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Determination of Chlorobenzenes in Sewage Sludge by Solid-Liquid Extraction with Purification at Low Temperature and Gas Chromatography Mass Spectrometry

Cited by 3 publications

References 1 publication

Phytoremediation of chlorobenzenes in sewage sludge cultivated with Pennisetum purpureum at different times

Phytoremediation of chlorobenzenes in sewage sludge cultivated with Pennisetum purpureum at different times

Easy and fast extraction methods to determine organochlorine pesticides in sewage sludge, soil, and water samples based at low temperature

A Comprehensive Review of Organochlorine Pesticide Monitoring in Agricultural Soils: The Silent Threat of a Conventional Agricultural Past

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