Chlorophenols in tap water from wells and surface sources in Rio de Janeiro, Brazil: method validation and analysis

Sartori, André Victor; Krauss, Thomas Manfred; Braga, Ana Maria Cheble Bahia; Yamazaki, Aida Gomes de Almeida; Oliveira, Rosália Maria de

doi:10.1590/s0100-40422012000400029

Cited by 5 publications

(4 citation statements)

References 16 publications

(18 reference statements)

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“…HPs were detected in waters for human consumption in concentrations between 0.010 and 0.486 µg·L −1 in Poland [ 46 ], between 0.008 and 0.238 µg·L −1 in Rio de Janeiro [ 47 ], and on average 0.06 µg·L −1 in Tunisia [ 48 ]. In the present study, we did not detect HPs in swimming pools or water for human consumption.…”

Section: Discussionmentioning

confidence: 99%

Presence of Disinfection Byproducts in Public Swimming Pools in Medellín, Colombia

Lara

Ramírez

Castrillón

et al. 2020

IJERPH

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The quality of water in swimming pools is essential to avoid risks to the health of users. Medellín has more than 1000 public swimming pools, which are supervised by the Medellín Health Authority to monitor and ensure compliance with relevant regulations. The Health Authority has financed several studies related to the quality of drinking and recreational water in Medellín in order to protect consumers and users. One such study involves the evaluation of the presence of disinfection byproducts (DBP). The best known DBPs resulting from disinfection with chlorine are trihalomethanes (THMs) and halogenated acetic acids (HAAs), as well as other minorities such as chloramines or halophenols (HPs). DBPs pose a greater risk in swimming pool water because there is a greater possibility of ingestion, since exposure occurs through several routes at the same time (direct ingestion of water, inhalation of volatile or aerosol solutes, dermal contact and absorption through skin). In the present work, high concentrations of THMs and HAAs were detected in the public swimming pools selected in the study, but the presence of HPs was not detected in the pools.

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Section: Discussionmentioning

confidence: 99%

Presence of Disinfection Byproducts in Public Swimming Pools in Medellín, Colombia

Lara

Ramírez

Castrillón

et al. 2020

IJERPH

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“…where: K L was the Langmuir isotherm constant determined in Eq. 8 and C 0 was the initial concentration of the adsorbate (Salim and Munekage, 2009) The Langmuir isotherm model used was derived from Eq. 10:…”

Section: Adsorption Isothermsmentioning

confidence: 99%

“…However, water pollution is becoming a global concern . Organic pollutants such as phenols are among the water pollutants that pose a threat to human health (Sartori et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Electrospun chitosan-based nanofibres for removal of phenols from drinking water

Nthunya

Masheane

Malinga

et al. 2018

WSA

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Chitosan-based nanofibres were synthesized using a fibre electrospinning technique and tested for the removal of 3-methyl-4-nitrophenol from aqueous solutions. The downside of chitosan-based materials is swelling. In this study, it was found that the addition of polyisoprene not only improved the electrospinning ability of chitosan but also reduced the swelling of the nanofibres by 50%. The adsorption studies of 3-methyl-4-nitrophenol on the chitosan-based nanofibres were conducted in a batch process. The nanofibres were found to remove up to 90% of 3-methyl-4-nitrophenol with an adsorption reduction capacity of 12% at each cycle of reusability test. The reduction capacity was associated with the chemical interaction of the adsorbate and the adsorbent. This indicated that the nanofibres can effectively remove 3-methyl-4-nitrophenol from water for at least 3 cycles. The adsorption efficiency improved as the degree of cross-linking was reduced and the adsorption mechanism followed the Freundlich isotherm suggesting that the adsorption of 3-methyl-4-nitrophenol occurred in different layers on the surface of the nanofibres. The degree of crosslinking of the electrospun nanofibres with glutaraldehyde was found to affect theadsorption capacity. Nanofibres with different degrees of crosslinking were used to study the effect of pH, adsorbent dose, and initial concentration.

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“…There is a need to treat these GW and SW before drinking while maintaining regular assessment of these water sources.drinking water (Sonawane and Korake, 2016). In Brazil, the Brazilian potability standard for drinking water set the maximum permissible level for 2,4,6-TCP at 200 ng L − 1 (Sartori et al, 2012). However, there is a dearth of data on the presence of these phenolic compounds in water bodies and drinking water sources in Africa, even though these compounds are vastly used in industries and particularly for agricultural purposes in the continent.…”

mentioning

confidence: 99%

Pollution and risk assessment of phenolic compounds in drinking water sources from South-Western Nigeria

Otitoju

Alfred

Olorunnisola

et al. 2023

Environ Sci Pollut Res

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This study reports the occurrence and risk assessment of 2,4-Dinitrophenol (2,4-DNP), Phenol (PHE), and 2,4,4, in drinking water sources in three South western States in Nigeria (Osun, Oyo and Lagos). Groundwater (GW) and surface water (SW) were collected during dry and wet seasons of a year. The detection frequency of the phenolic compounds followed the trend: Phenol > 2,4-DNP > 2,4,6-TCP. The mean concentrations of 2,4-DNP, Phenol, and 2,4,6-TCP in GW/SW samples from Osun State were 639/553 µg L − 1 , 261/262 µg L − 1 , and 169/131 µg L − 1 respectively, during the rainy season and 154/7 µg L − 1 , 78/37 µg L − 1 , and 123/15 µg L − 1 during the dry season. In Oyo state, the mean concentration were 165/391 µgL − 1 for 2,4-DNP and 71/231 µgL − 1 for Phenol in GW/SW samples respectively, during rainy season. Generally, in the dry season, these values decreased. In any case, these concentrations are higher than those previously reported in water from other countries. The concentration of 2,4-DNP in water posed serious ecological risks to Daphnia on the acute scale while it was Algae on the chronic scale. Estimated daily intake and hazard quotient calculations suggests that 2,4-DNP in water pose serious toxicity concern to humans. Additionally, the concentration of 2,4,6-TCP in water from Osun State in both seasons pose signi cant carcinogenic risk to persons ingesting water from this State. Every exposure group were at risk from ingesting these phenolic compounds in water. However, this decreased with increasing age of the exposure group. Results from the Principal Component Analysis indicate that 2,4-DNP in water samples is from an anthropogenic source different from that for Phenol and 2,4,6-TCP. There is a need to treat these GW and SW before drinking while maintaining regular assessment of these water sources.drinking water (Sonawane and Korake, 2016). In Brazil, the Brazilian potability standard for drinking water set the maximum permissible level for 2,4,6-TCP at 200 ng L − 1 (Sartori et al., 2012). However, there is a dearth of data on the presence of these phenolic compounds in water bodies and drinking water sources in Africa, even though these compounds are vastly used in industries and particularly for agricultural purposes in the continent. Consequently, no limit has been determined for these priority pollutants in aquatic environments in West African countries.To make matters worse for millions of Africans, the major sources of drinking water are some of these aquatic environments, including streams, rivers, hand-dug wells and boreholes. In fact it is estimated that > 50% of Africans use groundwater as their primary source of drinking water (https://businessday.ng/opinion/article/world-water-day-2022-where-are-we/ ). Water from these sources is not pre-treated before use. The quality of these drinking water sources from Africa and especially Nigeria, with respect to phenolic compounds is relatively unknown.Based on the observed gaps, this study aims to provide baseline data on the occurrence of some p...

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Chlorophenols in tap water from wells and surface sources in Rio de Janeiro, Brazil: method validation and analysis

Cited by 5 publications

References 16 publications

Presence of Disinfection Byproducts in Public Swimming Pools in Medellín, Colombia

Presence of Disinfection Byproducts in Public Swimming Pools in Medellín, Colombia

Electrospun chitosan-based nanofibres for removal of phenols from drinking water

Pollution and risk assessment of phenolic compounds in drinking water sources from South-Western Nigeria

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