Multiphase Chemistry Controls Inorganic Chlorinated and Nitrogenated Compounds in Indoor Air during Bleach Cleaning
We report elevated levels of gaseous inorganic chlorinated and nitrogenated compounds in indoor air while cleaning with a commercial bleach solution during the House Observations of Microbial and Environmental Chemistry field campaign in summer 2018. Hypochlorous acid (HOCl), chlorine (Cl2), and nitryl chloride (ClNO2) reached part-per-billion by volume levels indoors during bleach cleaning-several orders of magnitude higher than typically measured in the outdoor atmosphere. Kinetic modeling revealed that multiphase chemistry plays a central role in controlling indoor chlorine and reactive nitrogen chemistry during these periods. Cl2 production occurred via heterogeneous reactions of HOCl on indoor surfaces. ClNO2 and chloramine (NH2Cl, NHCl2, NCl3) production occurred in the applied bleach via aqueous reactions involving nitrite (NO2-) and ammonia (NH3), respectively. Aqueous-phase and surface chemistry resulted in elevated levels of gas-phase nitrogen dioxide (NO2). We predict hydroxyl (OH) and chlorine (Cl) radical production during these periods (106 and 107 molecules cm-3 s-1, respectively) driven by HOCl and Cl2 photolysis. Ventilation and photolysis accounted for <50% and <0.1% total loss of bleach-related compounds from indoor air, respectively; we conclude that uptake to indoor surfaces is an important additional loss process. Indoor HOCl and nitrogen trichloride (NCl3) mixing ratios during bleach cleaning reported herein are likely detrimental to human health.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2020 |
|---|---|
| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:54 |
|---|---|
| Enthalten in: |
Environmental science & technology - 54(2020), 3 vom: 04. Feb., Seite 1730-1739 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Mattila, James M [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
4R7X1O2820 |
|---|
| Anmerkungen: |
Date Completed 16.03.2020 Date Revised 16.03.2020 published: Print-Electronic Citation Status MEDLINE |
|---|
| doi: |
10.1021/acs.est.9b05767 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM305387006 |
|---|
| LEADER | 01000naa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM305387006 | ||
| 003 | DE-627 | ||
| 005 | 20231225121050.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231225s2020 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1021/acs.est.9b05767 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1017.xml |
| 035 | |a (DE-627)NLM305387006 | ||
| 035 | |a (NLM)31940195 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Mattila, James M |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Multiphase Chemistry Controls Inorganic Chlorinated and Nitrogenated Compounds in Indoor Air during Bleach Cleaning |
| 264 | 1 | |c 2020 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Completed 16.03.2020 | ||
| 500 | |a Date Revised 16.03.2020 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a We report elevated levels of gaseous inorganic chlorinated and nitrogenated compounds in indoor air while cleaning with a commercial bleach solution during the House Observations of Microbial and Environmental Chemistry field campaign in summer 2018. Hypochlorous acid (HOCl), chlorine (Cl2), and nitryl chloride (ClNO2) reached part-per-billion by volume levels indoors during bleach cleaning-several orders of magnitude higher than typically measured in the outdoor atmosphere. Kinetic modeling revealed that multiphase chemistry plays a central role in controlling indoor chlorine and reactive nitrogen chemistry during these periods. Cl2 production occurred via heterogeneous reactions of HOCl on indoor surfaces. ClNO2 and chloramine (NH2Cl, NHCl2, NCl3) production occurred in the applied bleach via aqueous reactions involving nitrite (NO2-) and ammonia (NH3), respectively. Aqueous-phase and surface chemistry resulted in elevated levels of gas-phase nitrogen dioxide (NO2). We predict hydroxyl (OH) and chlorine (Cl) radical production during these periods (106 and 107 molecules cm-3 s-1, respectively) driven by HOCl and Cl2 photolysis. Ventilation and photolysis accounted for <50% and <0.1% total loss of bleach-related compounds from indoor air, respectively; we conclude that uptake to indoor surfaces is an important additional loss process. Indoor HOCl and nitrogen trichloride (NCl3) mixing ratios during bleach cleaning reported herein are likely detrimental to human health | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 7 | |a Air Pollutants |2 NLM | |
| 650 | 7 | |a Gases |2 NLM | |
| 650 | 7 | |a Chlorine |2 NLM | |
| 650 | 7 | |a 4R7X1O2820 |2 NLM | |
| 650 | 7 | |a Hypochlorous Acid |2 NLM | |
| 650 | 7 | |a 712K4CDC10 |2 NLM | |
| 700 | 1 | |a Lakey, Pascale S J |e verfasserin |4 aut | |
| 700 | 1 | |a Shiraiwa, Manabu |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Chen |e verfasserin |4 aut | |
| 700 | 1 | |a Abbatt, Jonathan P D |e verfasserin |4 aut | |
| 700 | 1 | |a Arata, Caleb |e verfasserin |4 aut | |
| 700 | 1 | |a Goldstein, Allen H |e verfasserin |4 aut | |
| 700 | 1 | |a Ampollini, Laura |e verfasserin |4 aut | |
| 700 | 1 | |a Katz, Erin F |e verfasserin |4 aut | |
| 700 | 1 | |a DeCarlo, Peter F |e verfasserin |4 aut | |
| 700 | 1 | |a Zhou, Shan |e verfasserin |4 aut | |
| 700 | 1 | |a Kahan, Tara F |e verfasserin |4 aut | |
| 700 | 1 | |a Cardoso-Saldaña, Felipe J |e verfasserin |4 aut | |
| 700 | 1 | |a Ruiz, Lea Hildebrandt |e verfasserin |4 aut | |
| 700 | 1 | |a Abeleira, Andrew |e verfasserin |4 aut | |
| 700 | 1 | |a Boedicker, Erin K |e verfasserin |4 aut | |
| 700 | 1 | |a Vance, Marina E |e verfasserin |4 aut | |
| 700 | 1 | |a Farmer, Delphine K |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Environmental science & technology |d 1967 |g 54(2020), 3 vom: 04. Feb., Seite 1730-1739 |w (DE-627)NLM112374735 |x 1520-5851 |7 nnns |
| 773 | 1 | 8 | |g volume:54 |g year:2020 |g number:3 |g day:04 |g month:02 |g pages:1730-1739 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1021/acs.est.9b05767 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 54 |j 2020 |e 3 |b 04 |c 02 |h 1730-1739 | ||