Association of carbon dioxide with indoor air pollutants and exceedance of health guideline values

Ramalho, Olivier; Wyart, Guillaume; Mandin, Corinne; Blondeau, Patrice; Cabanes, Pierre‐André; Leclerc, Nathalie; Mullot, Jean-Ulrich; Boulanger, Guillaume; Redaelli, Matteo

doi:10.1016/j.buildenv.2015.03.018

Cited by 104 publications

(59 citation statements)

References 29 publications

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“…In autumn, winter, and spring indoor air quality is bad and it does not meet any of the recommended standards. IAQ in kindergartens in Poland is similar to that which can be observed in schools in other countries of the EU (Ramalho et al 2015) and in the USA, but not in schools in Poland. The CO2 concentration in Polish schools is much higher than in the kindergartens.…”

Section: Discussion Of the Obtained Measuremen Resultssupporting

confidence: 62%

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Analysis of Carbon Dioxide in Kindergartens in Poland

Jachimowicz

Gładyszewska-Fiedoruk

2017

Proccedings of 10th International Conference "Environmental Engineering"

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Abstract. Children in kindergartens spend between five and ten hours a day, the quality of air inside is very important. Kindergartens are public buildings. Kindergartens in Poland do not have mechanical ventilation, most often use stack ventilation, which is frequently aided by airing. The three considered buildings were located in eastern Europe. The main objective of the research was to evaluate the interior conditions, especially with regard to carbon dioxide concentration. In the afternoon, the permissible level of carbon dioxide concentration was substantially exceeded (by 190% at the most in first series of measurement). The present research has resulted in considerable improvement of indoor conditions in the analyzed kindergartens (less than 140% in third series of measurement). The presence of children and ventilation habits seemed to be the main determinants of IAQ and carbon dioxide.

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Section: Discussion Of the Obtained Measuremen Resultssupporting

confidence: 62%

“…The optimal parameters of indoor air are proposed in the report (Report WHO 2000;PN-EN ISO 7730:2006) and in the paper (Ramalho et al 2015).…”

Section: Room Microclimatementioning

confidence: 99%

Analysis of Carbon Dioxide in Kindergartens in Poland

Jachimowicz

Gładyszewska-Fiedoruk

2017

Proccedings of 10th International Conference "Environmental Engineering"

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“…Sarbu and Pacurar (2015) found that the performance of two cognitive tests continued to improve linearly when bioeffluents levels reduced as indicated by a decrease of CO 2 level from 1,000 to 500 ppm. Ramalho et al (2015) confirmed that even with low CO 2 levels (i.e. high ventilation rate), the reduction of other pollutants remains necessary to avoid the exceedance of health guideline values and to achieve a satisfactory indoor air quality.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 60%

Human responses to carbon dioxide, a follow-up study at recommended exposure limits in non-industrial environments

Zhang

Wargocki

Lian

2016

Building and Environment

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“…Indoor CO2 levels, or estimates of metabolic CO2 emission rates, are also used in demand controlled ventilation systems [4]. In cases such as these, elevated levels of CO2 are not assumed to be directly problematic, but rather are taken to be indicative of insufficient dilution of indoor air with outdoor air, enabling air pollutants with indoor sources to accumulate, including bioeffluents other than CO2 [3,5]. It is under this concept that CO2 levels in indoor air are considered in guidelines such as ASHRAE 62.1, which includes an appendix with an example calculation showing an indoor CO2 level of 700 ppm above outdoors results in satisfaction with respect to levels of human bioeffluents in a substantial majority of occupants [6].…”

Section: Introductionmentioning

confidence: 99%

Real-time monitoring of personal exposures to carbon dioxide

Gall

Cheung

Luhung

et al. 2016

Building and Environment

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Elevated indoor CO2 levels are indicative of insufficient ventilation in occupied spaces and correlate with elevated concentrations of pollutants of indoor origin. Adverse health and wellbeing outcomes associated with elevated indoor CO2 levels are based on CO2 as a proxy, although some emerging evidence suggests CO2 itself may impact human cognition. Using portable monitors, we conducted an exposure study with 16 subjects in Singapore to understand the levels, dynamics and influencing factors of personal exposure to CO2. Participants carried a CO2 monitor continuously for 7-day periods recording their exposure levels at 1-min intervals. A recall diary was maintained of time-microenvironment-activity budget. We found that the mode of bedroom ventilation was a major determinant of CO2 exposure. Approximately half of the participants slept in bedrooms employing ductless split air-conditioners (group "AC"); half slept in bedrooms naturally ventilated through operable windows (group "NV"). Median CO2 exposure levels for AC vs. NV groups are significantly different (̃ = 650 ppm vs. ̃ = 550 ppm, p < 0.001). Mean daily integrated exposures for group AC were statistically higher than for group NV: 22,800 ppm h/d vs. 16,000 ppm h/d (p < 0.005). Exposure events associated with potential adverse cognitive implications (duration > 2.5 h, average CO2 mixing ratio > 1000 ppm) occurred, on average, at frequencies of 0.5 d -1 across all participants, 0.6 d -1 for AC participants and 0.2 d -1 for NV participants. The majority of such events occurred in the home (86%), followed by work (9%) and transit (3%).

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Association of carbon dioxide with indoor air pollutants and exceedance of health guideline values

Cited by 104 publications

References 29 publications

Analysis of Carbon Dioxide in Kindergartens in Poland

Analysis of Carbon Dioxide in Kindergartens in Poland

Human responses to carbon dioxide, a follow-up study at recommended exposure limits in non-industrial environments

Real-time monitoring of personal exposures to carbon dioxide

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