Dr. Steven N. Chillrud

Pronouns: he/him/his

Lamont Research Professor, Geochemistry, Lamont-Doherty Earth Observatory (LDEO), Columbia Climate School

Affiliated with: M.S. in Sustainability Science

School of Professional Studies

Affiliated with: M.P.A. in Environmental Science and Policy

Comer 201 (office) / Comer 312 (lab)
61 Route 9W
Lamont-Doherty Earth Observatory
Palisades, NY 10964


Steven Chillrud, Ph.D. is a Lamont Research Professor at Lamont-Doherty Earth Observatory of Columbia University. He describes himself as an environmental geochemist interested in public health research. Much of his research is focused on the role of particles in the transport, behavior, and fate of chemical contaminants. His expertise in exposure assessment includes the development and testing of air samplers and analytical methods for quantifying airborne contaminants.

Dr. Chillrud’s formal training was in geochemistry and focused on analytical chemistry and understanding transport and fate of particle-associated contaminants in the Hudson River Watershed through the use of dated sediment cores. During his post-doc at Columbia University, he began reconstructing the history of atmospheric deposition of a wide array of particle-bound contaminants into NYC throughout the late 19th and 20th centuries.

Dr. Chillrud’s research spans air, water and soil pollution in both urban and rural settings. He serves as Director of the Exposure Assessment Core Facility of the Center for Environmental Health in Northern Manhattan, which supports a wide array of air and water pollution projects, including supporting projects in low- and middle-income countries and overseeing the development and use of air sampling equipment.

Dr. Chillrud’s early work identified short commutes in the subway system as being the dominant exposure pathway for NYC adolescents to airborne iron, manganese, and chromium. Frustration with limitations of pumps and monitors led to efforts developing and testing miniaturized, personal air samplers for black carbon and multiple air pollutants.

Dr. Chillrud is also active in research on enhanced remediation methods of groundwater and research translation within Columbia’s Superfund Program on Health Effects and Geochemistry of Arsenic. He is an active member of Columbia’s CleanAir Toolbox, a collaboration of 20 research groups across the Columbia Climate School focused on solutions-oriented work to improve air quality in cities across the Global South, also referred to as low and middle income countries.

Dr. Chillrud teaches classes related to sustainability in SIPA’s Environmental Science and Policy Program and the the SPS Master’s Program in Science of Sustainability.


Only select projects listed below
Name Start Date End Date
Assessing the Impact of Clean Heat Policy Intervention in New York City 1/20/14 12/31/15
Black Carbon Exposure, DNA Methylation, Airway Inflammation in Pediatric Asthma 11/1/11 10/31/16
Black Carbon Exposure, DNA Methylation, Airway Inflammation in Pediatric Asthma 11/1/11 10/31/17
Center for Environmental Health in Northern Manhattan - Exposure Assessment (LDEO) 7/1/98 3/31/18
Center for Environmental Health in Northern Manhattan - Exposure Assessment (LDEO) 7/1/98 3/31/18
Center for Environmental Health in Northern Manhattan (CEHNM) 4/1/18 3/31/21
Child Lung Development Following a Cookstove Intervention 7/1/17 6/30/22
Health effects and geochemistry of arsenic: Core C- Biogeochemistry Core 5/16/17 3/31/19
Health effects and geochemistry of arsenic: Core F - Research Translation Core 5/16/17 3/31/19
Field testing of RTI Enhanced child Monitor in Ghana 5/1/16 5/31/17
Health Effects and Geochemistry of Arsenic - Core G 5/16/17 3/31/18
Health Effects and Geochemistry of Arsenic - Project 3 5/16/17 3/31/20
Health Effects and Geochemistry of Arsenic and Manganese 4/1/19 3/31/20
Health Effects and Geochemistry of Arsenic and Manganese - Project No 4 6/1/00 8/14/17
High precision robotic weighing system in support of new exposure health studies 7/10/13 7/9/15
Impact of Green Housing Practices on Indoor Exposure to PM2.5 Among Low-income Families in the United States 6/19/12 12/31/12
Monitoring particulate, PAH, allergen and microbial exposures in asthmatic kids 9/30/15 9/29/19
Potential inhaled dose of particulates, biking and cardiovascular indicators 3/6/15 2/28/17
Potential Inhaled Dose of Particulates, Biking and Cardiovascular Indicators 3/15/17 2/28/20
Trace elements in autopsy tissues in WTC decedents 7/1/13 6/30/16
Understanding Adoption of Clean Cookstoves 9/17/14 6/30/19
Validating particulate matter monitors for multiple parameters 9/7/11 8/31/15
Crowd-Sourced Traffic Data: Predicting Air Pollution & Acute Ischemic Stroke 7/1/19 6/30/22
Black Carbon Exposure, DNA Methylation, Airway Inflammation in Pediatric Asthma 11/1/11 10/31/16
WSP Phase I Initial Planning of Field Work for High Resolution Coring for Lower Hudson River Reassessment 9/16/22 10/28/26
Harnessing Microbial Batteries for Efficient, Sustainable Water Treatment and Recycling in Rural Areas 10/1/21 9/30/25
Capacity Building, Knowledge Sharing, and Air Quality Improvement for Anglophone and Francophone West Africa 9/1/21 8/31/24


Only select publications listed below
Name Published Date
Air Pollution, Urgent Asthma Medical Visits and the Modifying Effect of Neighborhood Asthma Prevalence 2019
Assessment of exposure to air pollution in children: Determining whether wearing a personal monitor affects physical activity. 2019
Prenatal maternal stress and birth outcomes in rural Ghana: sex-specific associations 2019
Soot and the city: Evaluating the impacts of Clean Heat policies on indoor/outdoor air quality in New York City apartments 2018
Ambulatory monitoring demonstrates an acute association between cookstove-related carbon monoxide and blood pressure in a Ghanaian cohort 2017
Effect of personal exposure to black carbon on changes in allergic asthma gene methylation measured 5 days later in urban children: importance of allergic sensitization 2017
Physical activity, black carbon exposure, and DNA methylation in the FOXP3 promoter 2017
Short-term exposure to PM2.5 and vanadium and changes in asthma gene DNA methylation and lung function decrements among urban children 2017
Differences in Ambient Polycyclic Aromatic Hydrocarbon Concentrations between Streets and Alleys in New York City: Open Space vs. Semi-Closed Space 2016
Physical activity, black carbon exposure and airway inflammation in an urban adolescent cohort 2016
Unconventional Gas and Oil Drilling Is Associated with Increased Hospital Utilization Rates 2015
Association of recent exposure to ambient metals on fractional exhaled nitric oxide in 9–11 year old inner-city children 2014
Polycyclic aromatic hydrocarbon exposure, obesity and childhood asthma in an urban cohort 2014
Time trends of polycyclic aromatic hydrocarbon exposure in New York city from 2001 to 2012: Assessed by repeat air and urine samples 2014
Urban Adolescents Readily Comply with a Complicated Asthma Research Protocol 2014
Health and Household Air Pollution from Solid Fuel Use: The Need for Improved Exposure Assessment 2013
Personal Exposures to Fine Particulate Matter and Black Carbon in Households Cooking with Biomass Fuels in Rural Ghana 2013
Effects of Floor Level and Building Type on Residential Levels of Outdoor and Indoor Polycyclic Aromatic Hydrocarbons, Black Carbon, and Particulate Matter in New York City 2011
Assessment of Benzo(a)pyrene-equivalent Carcinogenicity and Mutagenicity of Residential Indoor versus Outdoor Polycyclic Aromatic Hydrocarbons Exposing Young Children in New York City 2010
Ambient Metals, Elemental Carbon, and Wheeze and Cough in New York City Children through 24 Months of Age 2009
Integrative Acoustic Mapping Reveals Hudson River Sediment Processes and Habitats 2005