Base de dados : MEDLINE
Pesquisa : J03.925.830 [Categoria DeCS]
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[PMID]:29264676
[Au] Autor:Faraji H; Helalizadeh M; Kordi MR
[Ad] Endereço:Department of Chemistry, Varamin-Pishva Branch, Islamic Azad University, Varamin, 338177489, Iran. hakimfaraji@yahoo.com.
[Ti] Título:Overcoming the challenges of conventional dispersive liquid-liquid microextraction: analysis of THMs in chlorinated swimming pools.
[So] Source:Anal Bioanal Chem;410(2):605-614, 2018 Jan.
[Is] ISSN:1618-2650
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:A rapid, simple, and sensitive approach to the analysis of trihalomethanes (THMs) in swimming pool water samples has been developed. The main goal of this study was to overcome or to improve the shortcomings of conventional dispersive liquid-liquid microextraction (DLLME) and to maximize the realization of green analytical chemistry principles. The method involves a simple vortex-assisted microextraction step, in the absence of the dispersive solvent, followed by salting-out effect for the elimination of the centrifugation step. A bell-shaped device and a solidifiable solvent were used to simplify the extraction solvent collection after phase separation. Optimization of the independent variables was performed by using chemometric methods in three steps. The method was statistically validated based on authentic guidance documents. The completion time for extraction was less than 8 min, and the limits of detection were in the range between 4 and 72 ng L . Using this method, good linearity and precision were achieved. The results of THMs determination in different real samples showed that in some cases the concentration of total THMs was more than threshold values of THMs determined by accredited healthcare organizations. This method indicated satisfactory analytical figures of merit. Graphical Abstract A novel green microextraction technique for overcoming the challenges of conventional DLLME. The proposed procedure complies with the principles of green/sustainable analytical chemistry, comprising decreasing the sample size, making easy automation of the process, reducing organic waste, diminishing energy consumption, replacing toxic reagents with safer reagents, and enhancing operator safety.
[Mh] Termos MeSH primário: Microextração em Fase Líquida/métodos
Piscinas
Trialometanos/análise
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Halogenação
Limite de Detecção
Solventes
Trialometanos/isolamento & purificação
Água/análise
Poluentes Químicos da Água/isolamento & purificação
[Pt] Tipo de publicação:JOURNAL ARTICLE; VALIDATION STUDIES
[Nm] Nome de substância:
0 (Solvents); 0 (Trihalomethanes); 0 (Water Pollutants, Chemical); 059QF0KO0R (Water)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171222
[St] Status:MEDLINE
[do] DOI:10.1007/s00216-017-0762-3


  2 / 1577 MEDLINE  
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[PMID]:28745462
[Au] Autor:Valeriani F; Protano C; Vitali M; Romano Spica V
[Ad] Endereço:Public Health Unit, University of Rome "Foro Italico", Rome, Italy.
[Ti] Título:Swimming pool attendance during childhood and development of asthma: Reply.
[So] Source:Pediatr Int;59(7):847-848, 2017 07.
[Is] ISSN:1442-200X
[Cp] País de publicação:Australia
[La] Idioma:eng
[Mh] Termos MeSH primário: Asma
Piscinas
[Mh] Termos MeSH secundário: Exposição Ambiental
Seres Humanos
[Pt] Tipo de publicação:LETTER; COMMENT
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180209
[Lr] Data última revisão:
180209
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170727
[St] Status:MEDLINE
[do] DOI:10.1111/ped.13311


  3 / 1577 MEDLINE  
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[PMID]:28745459
[Au] Autor:Bernard A
[Ad] Endereço:Laboratory of Toxicology and Applied Pharmacology, Institute of Experimental and Clinical Research, Catholic University of Louvain, Brussels, Belgium.
[Ti] Título:Swimming attendance during childhood and development of asthma: Meta-analysis.
[So] Source:Pediatr Int;59(7):846-847, 2017 07.
[Is] ISSN:1442-200X
[Cp] País de publicação:Australia
[La] Idioma:eng
[Mh] Termos MeSH primário: Asma
Natação
[Mh] Termos MeSH secundário: Exposição Ambiental
Seres Humanos
Piscinas
[Pt] Tipo de publicação:LETTER; COMMENT
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180209
[Lr] Data última revisão:
180209
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170727
[St] Status:MEDLINE
[do] DOI:10.1111/ped.13276


  4 / 1577 MEDLINE  
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[PMID]:28934187
[Au] Autor:Chiu SK; Burton NC; Dunn KH; de Perio MA
[Ti] Título:Respiratory and Ocular Symptoms Among Employees of an Indoor Waterpark Resort - Ohio, 2016.
[So] Source:MMWR Morb Mortal Wkly Rep;66(37):986-989, 2017 Sep 22.
[Is] ISSN:1545-861X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:In July 2015, a municipal health department in Ohio received complaints of respiratory and ocular symptoms from patrons of an indoor waterpark resort. In response, the health department conducted an online survey in August 2015 through which 19 (68%) patron and employee respondents reported eye burning, nose irritation, difficulty breathing, and vomiting. On August 11, 2015, the health department requested a health hazard evaluation by CDC's National Institute for Occupational Safety and Health to characterize the prevalence of symptoms among employees and determine the etiology of work-related symptoms. In January 2016, CDC investigators performed a cross-sectional epidemiologic study, environmental sampling, and ventilation system assessment (1). Findings suggested that chlorine disinfection byproducts and environmental conditions contributed to a higher prevalence of work-related respiratory and ocular symptoms among employees in the waterpark compared with employees in other resort areas. Recommendations included servicing the ventilation system, changing work practices to decrease the amount of disinfection byproduct precursors, and responding promptly to employee reports of symptoms.
[Mh] Termos MeSH primário: Poluição do Ar em Ambientes Fechados/efeitos adversos
Cloro/efeitos adversos
Oftalmopatias/epidemiologia
Doenças Profissionais/epidemiologia
Exposição Ocupacional/efeitos adversos
Doenças Respiratórias/epidemiologia
Piscinas
[Mh] Termos MeSH secundário: Adolescente
Adulto
Idoso
Poluição do Ar em Ambientes Fechados/análise
Cloro/análise
Estudos Transversais
Oftalmopatias/etiologia
Feminino
Seres Humanos
Masculino
Meia-Idade
Doenças Profissionais/etiologia
Exposição Ocupacional/análise
Ohio/epidemiologia
Prevalência
Doenças Respiratórias/etiologia
Ventilação
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
4R7X1O2820 (Chlorine)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170926
[Lr] Data última revisão:
170926
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170922
[St] Status:MEDLINE
[do] DOI:10.15585/mmwr.mm6637a5


  5 / 1577 MEDLINE  
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[PMID]:28774617
[Au] Autor:Boudenne JL; Parinet J; Demelas C; Manasfi T; Coulomb B
[Ad] Endereço:Aix Marseille Univ, CNRS, LCE, 13331 Marseille, France. Electronic address: jean-luc.boudenne@univ-amu.fr.
[Ti] Título:Monitoring and factors affecting levels of airborne and water bromoform in chlorinated seawater swimming pools.
[So] Source:J Environ Sci (China);58:262-270, 2017 Aug.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Water and air quality of eight seawater swimming pools using chlorine disinfection was measured during four sampling campaigns, spread on one full-year, and in four thalassotherapy centers located in Southeast of France. Concentrations of trihalomethanes (THMs) in air and in water as well as concentrations of parameters, including nonpurgeable organic carbon (NPOC), free residual chlorine (Cl ), pH, Kjeldhal Nitrogen (KN), salinity, conductivity, bromide ions and, water and air temperature, were measured. Water and air samples were collected in triplicates morning - at the opening of the pools -, noon and night - at the closing of the pools -, in summer and winter. Data analysis was performed by Principal Component Analysis (PCA) and rotated component matrix, from both data quality and other parameters such as TOC, aromaticity (UV ), pH, hygrometry, and free residual chlorine (Cl ). This statistical analysis demonstrates a high correlation between TOC, Cl and UV and THM levels found in air and water, particularly for the major ones (CHBr in water 300.0µg/L mean, 1029.0µg/L maximum; CHBr in air: 266.1µg/m mean, 1600.0µg/m maximum, and CHClBr in water: 18.9µg/L mean, 81.0µg/L maximum; CHClBr in air: 13.6µg/m mean, 150.0µg/m maximum). These high levels of bromoform (CHBr ) are particularly worrisome in such health institutions, even these levels do not exceed the Permissible Exposure Limit (PEL) of 5mg/m as an 8hour time-weighted average currently fixed by various administrations, such as Occupational Safety and Health Administration (OSHA).
[Mh] Termos MeSH primário: Poluentes Atmosféricos/análise
Desinfetantes/análise
Desinfecção/métodos
Monitoramento Ambiental
Piscinas
[Mh] Termos MeSH secundário: França
Halogenação
Água do Mar/química
Trialometanos/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants); 0 (Disinfectants); 0 (Trihalomethanes); TUT9J99IMU (bromoform)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170811
[Lr] Data última revisão:
170811
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170805
[St] Status:MEDLINE


  6 / 1577 MEDLINE  
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[PMID]:28774616
[Au] Autor:Salas LA; Font-Ribera L; Bustamante M; Sumoy L; Grimalt JO; Bonnin S; Aguilar M; Mattlin H; Hummel M; Ferrer A; Kogevinas M; Villanueva CM
[Ad] Endereço:ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain; Department of Epidemiology, The Geisel School of Medicine at Dartmouth, Lebanon, NH, USA; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain. Electro
[Ti] Título:Gene expression changes in blood RNA after swimming in a chlorinated pool.
[So] Source:J Environ Sci (China);58:250-261, 2017 Aug.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Exposure to disinfection by-products (DBP) such as trihalomethanes (THM) in swimming pools has been linked to adverse health effects in humans, but their biological mechanisms are unclear. We evaluated short-term changes in blood gene expression of adult recreational swimmers after swimming in a chlorinated pool. Volunteers swam 40min in an indoor chlorinated pool. Blood samples were drawn and four THM (chloroform, bromodichloromethane, dibromochloromethane and bromoform) were measured in exhaled breath before and after swimming. Intensity of physical activity was measured as metabolic equivalents (METs). Gene expression in whole blood mRNA was evaluated using IlluminaHumanHT-12v3 Expression-BeadChip. Linear mixed models were used to evaluate the relationship between gene expression changes and THM exposure. Thirty-seven before-after pairs were analyzed. The median increase from baseline to after swimming were: 0.7 to 2.3 for MET, and 1.4 to 7.1µg/m for exhaled total THM (sum of the four THM). Exhaled THM increased on average 0.94µg/m per 1 MET. While 1643 probes were differentially expressed post-exposure. Of them, 189 were also associated with exhaled levels of individual/total THM or MET after False Discovery Rate. The observed associations with the exhaled THM were low to moderate (Log-fold change range: -0.17 to 0.15). In conclusion, we identified short-term gene expression changes associated with swimming in a pool that were minor in magnitude and their biological meaning was unspecific. The high collinearity between exhaled THM levels and intensity of physical activity precluded mutually adjusted models with both covariates. These exploratory results should be validated in future studies.
[Mh] Termos MeSH primário: Desinfetantes/toxicidade
Exposição Ambiental/análise
Expressão Gênica/efeitos dos fármacos
Piscinas
Poluentes Químicos da Água/toxicidade
[Mh] Termos MeSH secundário: Adulto
Clorofórmio/sangue
Clorofórmio/toxicidade
Desinfetantes/sangue
Exposição Ambiental/estatística & dados numéricos
Feminino
Halogenação
Seres Humanos
Masculino
RNA
RNA Mensageiro/sangue
Natação
Trialometanos/sangue
Trialometanos/toxicidade
Poluentes Químicos da Água/sangue
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Disinfectants); 0 (RNA, Messenger); 0 (Trihalomethanes); 0 (Water Pollutants, Chemical); 3T4AJR1H24 (chlorodibromomethane); 63231-63-0 (RNA); 7LN464CH2O (bromodichloromethane); 7V31YC746X (Chloroform); TUT9J99IMU (bromoform)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170811
[Lr] Data última revisão:
170811
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170805
[St] Status:MEDLINE


  7 / 1577 MEDLINE  
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[PMID]:28774608
[Au] Autor:Carter RAA; Joll CA
[Ad] Endereço:Curtin Water Quality Research Centre, Department of Chemistry, Curtin University, Perth, Western Australia 6102, Australia.
[Ti] Título:Occurrence and formation of disinfection by-products in the swimming pool environment: A critical review.
[So] Source:J Environ Sci (China);58:19-50, 2017 Aug.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Disinfection of water for human use is essential to protect against microbial disease; however, disinfection also leads to formation of disinfection by-products (DBPs), some of which are of health concern. From a chemical perspective, swimming pools are a complex matrix, with continual addition of a wide range of natural and anthropogenic chemicals via filling waters, disinfectant addition, pharmaceuticals and personal care products and human body excretions. Natural organic matter, trace amounts of DBPs and chlorine or chloramines may be introduced by the filling water, which is commonly disinfected distributed drinking water. Chlorine and/or bromine is continually introduced via the addition of chemical disinfectants to the pool. Human body excretions (sweat, urine and saliva) and pharmaceuticals and personal care products (sunscreens, cosmetics, hair products and lotions) are introduced by swimmers. High addition of disinfectant leads to a high formation of DBPs from reaction of some of the chemicals with the disinfectant. Swimming pool air is also of concern as volatile DBPs partition into the air above the pool. The presence of bromine leads to the formation of a wide range of bromo- and bromo/chloro-DBPs, and Br-DBPs are more toxic than their chlorinated analogues. This is particularly important for seawater-filled pools or pools using a bromine-based disinfectant. This review summarises chemical contaminants and DBPs in swimming pool waters, as well as in the air above pools. Factors that have been found to affect DBP formation in pools are discussed. The impact of the swimming pool environment on human health is reviewed.
[Mh] Termos MeSH primário: Desinfetantes/análise
Desinfecção/métodos
Piscinas
[Mh] Termos MeSH secundário: Cloraminas/análise
Cloro/análise
Halogenação
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
0 (Chloramines); 0 (Disinfectants); 4R7X1O2820 (Chlorine)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170811
[Lr] Data última revisão:
170811
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170805
[St] Status:MEDLINE


  8 / 1577 MEDLINE  
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[PMID]:28774605
[Au] Autor:Tardif R; Rodriguez M; Catto C; Charest-Tardif G; Simard S
[Ad] Endereço:Department of Environmental and Occupational Health, School of Public Health, Université de Montréal, Canada. Electronic address: Robert.Tardif@umontreal.ca.
[Ti] Título:Concentrations of disinfection by-products in swimming pool following modifications of the water treatment process: An exploratory study.
[So] Source:J Environ Sci (China);58:163-172, 2017 Aug.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The formation and concentration of disinfection by-products (DBPs) in pool water and the ambient air vary according to the type of water treatment process used. This exploratory study was aimed at investigating the short-term impact of modifications of the water treatment process on traditional DBP levels (e.g., trihalomethanes (THMs), chloramines) and emerging DBPs (e.g., Halonitromethanes, Haloketones, NDMA) in swimming pool water and/or air. A sampling program was carried to understand the impact of the following changes made successively to the standard water treatment process: activation of ultraviolet (UV) photoreactor, halt of air stripping with continuation of air extraction from the buffer tank, halt of air stripping and suppression of air extraction from the buffer tank, suppression of the polyaluminium silicate sulfate (PASS) coagulant. UV caused a high increase of Halonitromethanes (8.4 fold), Haloketones (2.1 fold), and THMs in the water (1.7 fold) and, of THMs in the air (1.6 fold) and contributed to reducing the level of chloramines in the air (1.6 fold) and NDMA in the water (2.1 fold). The results highlight the positive impact of air stripping in reducing volatile contaminants. The PASS did not change the presence of DBPs, except for the THMs, which decrease slightly with the use of this coagulant. This study shows that modifications affecting the water treatment process can rapidly produce important and variable impacts on DBP levels in water and air and suggests that implementation of any water treatment process to reduce DBP levels should take into account the specific context of each swimming pool.
[Mh] Termos MeSH primário: Desinfetantes/análise
Piscinas
Poluentes Químicos da Água/análise
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Cloraminas/análise
Desinfecção
Trialometanos/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Chloramines); 0 (Disinfectants); 0 (Trihalomethanes); 0 (Water Pollutants, Chemical)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170811
[Lr] Data última revisão:
170811
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170805
[St] Status:MEDLINE


  9 / 1577 MEDLINE  
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[PMID]:28774604
[Au] Autor:Kim D; Ates N; Kaplan Bekaroglu SS; Selbes M; Karanfil T
[Ad] Endereço:Department of Environmental Engineering and Earth Sciences, Clemson University, Anderson, SC 29625, USA.
[Ti] Título:Impact of combining chlorine dioxide and chlorine on DBP formation in simulated indoor swimming pools.
[So] Source:J Environ Sci (China);58:155-162, 2017 Aug.
[Is] ISSN:1001-0742
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:The main objective of this study was to assess the combined use of chlorine dioxide (ClO ) and chlorine (Cl ) on the speciation and kinetics of disinfection by-product (DBP) formation in swimming pools using synthetic pool waters prepared with a body fluid analog (BFA) and/or fresh natural water. At 1:25 (mass ratio) of ClO to Cl , there was no significant reduction in the formation of trihalomethanes (THMs) and haloacetic acids (HAAs) for both BFA solution and natural water compared to the application of Cl alone. When the mass ratio of ClO to Cl increased to 1:1, substantial decreases in both THMs and HAAs were observed in the natural water, while there was almost no change of DBP formations in the BFA solution. Haloacetonitriles and halonitromethanes levels in both water matrices remained similar. In the presence of bromide, the overall DBP formation increased in both BFA solution and natural water. For the DBP formation kinetics, after 72hr of contact time, very low formation of THMs and HAAs was observed for the use of ClO only. Compared to Cl control, however, applying the 1:1 mixture of ClO /Cl reduced THMs by >60% and HAAs by >50%. Chlorite was maintained below 1.0mg/L, while the formation of chlorate significantly increased over the reaction time. Finally, in a bench-scale indoor pool experiment, applying ClO and Cl simultaneously produced less THMs compared to Cl control and kept chlorite at <0.4mg/L, while HAAs and chlorate accumulated over 4-week operation period.
[Mh] Termos MeSH primário: Compostos Clorados/química
Cloro/química
Desinfetantes/química
Óxidos/química
Piscinas
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Desinfecção/métodos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Chlorine Compounds); 0 (Disinfectants); 0 (Oxides); 4R7X1O2820 (Chlorine); 8061YMS4RM (chlorine dioxide)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170811
[Lr] Data última revisão:
170811
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170805
[St] Status:MEDLINE


  10 / 1577 MEDLINE  
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[PMID]:28649872
[Au] Autor:Bureau G; Lévesque B; Dubé M; Gauvin D; Lépine F; Laliberté D
[Ad] Endereço:a Département de médecine sociale et préventive, Faculté de médecine , Université Laval , Québec , Canada.
[Ti] Título:Indoor swimming pool environments and self-reported irritative and respiratory symptoms among lifeguards.
[So] Source:Int J Environ Health Res;27(4):306-322, 2017 Aug.
[Is] ISSN:1369-1619
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A web survey was conducted among 870 lifeguards (current and former) to assess the relationship between exposure to indoor swimming pool environments and respiratory health. Associations between respiratory symptoms and asthma with varying lengths of occupational exposure were assessed by multiple logistic regression. Lifeguards exposed more than 500 hours in the previous 12 months experienced more cough (adjustedOR = 2.54, IC95 % = 1.51-4.25), throat (aOR = 2.47, IC95 % = 1.44-4.24) and eye irritation (aOR = 4.34, IC95 % = 2.52-7.50) during this period than non-exposed lifeguards. Upper and lower respiratory symptoms while on duty were related to duration of lifetime exposure (> 500 days vs. ≤ 50 days: Upper aOR = 5.84, IC95 % = 3.60-9.50; Lower aOR = 2.53, IC95 % = 1.58-4.06). Physician-diagnosed asthma was high among lifeguards (23 %). Highly exposed asthmatic lifeguards (> 500 hours) over the previous 12 months had a significantly higher risk (aOR = 3.74, IC95 % = 1.39-10.02) of suffering from asthma attack(s) than non-exposed asthmatic subjects. Exposure to indoor swimming pool environments is related to respiratory symptoms among lifeguards.
[Mh] Termos MeSH primário: Doenças Profissionais/epidemiologia
Exposição Ocupacional
Doenças Respiratórias/epidemiologia
Piscinas/estatística & dados numéricos
Piscinas/normas
[Mh] Termos MeSH secundário: Adolescente
Adulto
Asma/epidemiologia
Asma/etiologia
Estudos Transversais
Feminino
Seres Humanos
Masculino
Meia-Idade
Doenças Profissionais/etiologia
Quebeque/epidemiologia
Doenças Respiratórias/etiologia
Autorrelato
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171107
[Lr] Data última revisão:
171107
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170627
[St] Status:MEDLINE
[do] DOI:10.1080/09603123.2017.1342228



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