Determination of three cresol isomers in sewage sludge by solid-liquid extraction with low temperature purification and gas chromatography-mass spectrometry

Ramalho, Marta B; Durães, Alisson Farley Soares; Silvério, Flaviano Oliveira; Pinho, Gevany Paulino de

doi:10.1080/03601234.2019.1678952

Cited by 11 publications

(3 citation statements)

References 22 publications

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“…This variation can be attributed to the heterogeneity of the sewage and the sample, throughout the operation of the WWTP. According to Yu et al (2015) and Ramalho et al (2020), cresols are commonly used in the production of disinfectants, with creolin and lysol being their most common derivatives. Also, Yu et al (2015) state that biological treatment has a low level of cresols' removal.…”

Section: Concentration Profile Of Organic Compoundsmentioning

confidence: 99%

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Characterization of organic compounds and drugs in sewage sludge aiming for agricultural recycling

Santana¹,

Fraga²,

Zanatta

et al. 2021

Heliyon

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The application of sewage sludge in soils can bring benefits to agricultural productivity, however, the risks arising from this application must be measured and carefully evaluated. Persistent organics compounds and drugs can be present in the sewage sludge and if applied to the soil, they can cause severe risks to the soil biota and contamination of groundwater. This work determined 174 persistent organic compounds and drugs in sludge samples from a wastewater treatment plant using chromatographic methods. The drugs ciprofloxacin, enrofloxacin and diclofenac were quantified, and values varied according to sampling period. For persistent organic compounds, cresols were the most abundant compounds in sewage sludge. With the analyses made of both the elutriate and the filtrate, it was possible to verify the potential for soil retention or leaching that each compound can present with the application of sewage sludge in the agriculture.

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Section: Concentration Profile Of Organic Compoundsmentioning

confidence: 99%

“… μg kg À1 , 50-460 μg kg À1 and 1300-940000 μg kg À1 , respectively Ramalho et al (2020). evaluated SS from six different WWTPs and found cresol levels between 105.5 and 677.7 μg kg À1 .…”

mentioning

confidence: 99%

Characterization of organic compounds and drugs in sewage sludge aiming for agricultural recycling

Santana¹,

Fraga²,

Zanatta

et al. 2021

Heliyon

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“…They were identified based on their retention time (based on polarity) and relative abundance ratio. The previous study conducted by Ramalho et al (2020) reported that o-cresol could be differentiated from m-cresol and p-cresol based on retention time.…”

Section: Toluene Inhibition Thresholdmentioning

confidence: 99%

Evaluation of toluene transformation in an Extractive Membrane Bioreactor (EMBR)

Loh¹

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Extraction Method for Determining Florpyrauxifen-Benzyl Herbicide in Rice

Lopes,

Sicupira,

Pinho

et al. 2024

Food Anal. Methods

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Florpyrauxifen-benzyl is an active ingredient used as herbicide to control weeds in rice cultivation. So far, there are few studies related to the extraction and determining methodologies for this compound. Therefore, this work aimed to optimize and validate solid-liquid extraction with low temperature puri cation (SLE-LTP) using high-performance liquid chromatography coupled to a diode array detection (HPLC-DAD) to determine the orpyrauxifen-benzyl in rice samples. The results showed that the optimal chromatographic conditions were obtained using the kinetex column, temperature of 25 °C, mobile phase composition of methanol:water (78:22 v/v), ow rate of 0.3 mL min -1 , and 260 nm as the wavelength.The optimum extraction conditions were obtained using acetonitrile and water (2:1) as extraction phase, followed by clean-up of extracts with alumina. The recovery percentage achieved was close to 100%, with relative standard deviation (RSD) less than 9.0%. The result showed a signi cant matrix effect (184.3%), but the methodology was precise, accurate, linear and selective, with a quanti cation limit of 5.0 μg kg -1 .

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Determination of three cresol isomers in sewage sludge by solid-liquid extraction with low temperature purification and gas chromatography-mass spectrometry

Cited by 11 publications

References 22 publications

Characterization of organic compounds and drugs in sewage sludge aiming for agricultural recycling

Characterization of organic compounds and drugs in sewage sludge aiming for agricultural recycling

Evaluation of toluene transformation in an Extractive Membrane Bioreactor (EMBR)

Extraction Method for Determining Florpyrauxifen-Benzyl Herbicide in Rice

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