Ambient Air Quality Monitoring
NAAQS-compliant measurement of PM10, PM2.5, SO2, NOx, CO, ozone, lead and metals.
Environmental Monitoring
About Ambient Air Quality Monitoring
Ambient air quality is judged against the National Ambient Air Quality Standards (NAAQS, 2009), and monitoring is required for environmental clearance, EIA baselines and consent compliance around industrial and construction sites. CVR Labs measures PM10, PM2.5, SO2, NOx, CO, ozone, ammonia, lead and benzene over the averaging periods the standard prescribes, using respirable dust samplers and the correct absorbing media for each gas.
We design the monitoring layout around the site and the regulatory purpose — upwind/downwind stations for an industry, receptor points for an EIA — and report each pollutant against its NAAQS limit. The output is the baseline or compliance dataset that consultants and project proponents submit to the regulator.
Most Requested
Signature tests under Ambient Air Quality Monitoring
The checks clients most often ask for with this service — we build the right sub-panel around your product and standard.
PM10 & PM2.5SO2, NOx, COOzone & ammoniaBenzene & leadHeavy metals in PMNoise (concurrent)
Test Coverage
What we analyse under Ambient Air Quality Monitoring
The parameter groups below are drawn from this service's own accredited scope; the full searchable list follows.
NAAQS defines the limits
PM2.5, PM10, SO2, NOx and the rest are capped by NAAQS over specific averaging periods; monitoring must match those periods to be valid.
EIA and EC need a baseline
Environmental clearance and EIA studies require a documented ambient-air baseline from an accredited laboratory.
Layout drives credibility
Upwind/downwind and receptor placement determine whether the dataset truly represents the site — design matters as much as analysis.
Criteria pollutants & particulates
PM10 (RSPM)PM2.5Sulphur Dioxide (SO2)Oxides of Nitrogen (NO2)Carbon Monoxide (CO)Ozone (O3)
Gases & toxics
Ammonia (NH3)Hydrogen Sulphide (H2S)Chlorine (Cl2)Total Fluorides (F)Benzo(a)PyreneNaphthalene
VOCs & chlorinated organics
BenzeneTolueneXyleneTotal VOCsCarbon TetrachlorideVinyl Chloride
Heavy metals & noise
Arsenic as AsLead as PbNickel as NiNoise Leq dB(A) Ambient
NABL Scope of Accreditation
Ambient Air Quality Monitoring — parameters & methods
| Parameter / Test | Method / Standard |
|---|---|
| 1,1,1,2-Tetrachloroethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,1,1-Trichloroethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,1,2,2-Tetrachloroethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,1,2-Trichloroethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,1-Dichloroethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,1-Dichloroethene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,1-Dichloropropene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,2,3-Trichlorobenzene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,2,3-Trichloropropane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,2,4-Trichlorobenzene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,2,4-Trimethylbenzene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,2-Dibromo-3- chloropropane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,2-Dibromoethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,2-Dichlorobenzene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,2-Dichloroethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,2-Dichloropropane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,3,5-Trimethylbenzene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,3-Dichlorobenzene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,3-Dichloropropane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 1,4-Dichlorobenzene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 2,2-Dichloropropane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 2-Chlorotoluene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 4-Chlorotoluene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| 4-Isopropyltoluene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Ammonia as (NH3) | IS 5182 (Part 25) Indophenol methodIS 11255 (Part 6)NIOSH - 6015 |
| Arsenic as As | CVR/INS/SOP/ICPMS/003IS 3025 (PART 65)CVR/INS/SOP/ICPMS/001 |
| Benzene | CVR/INS/SOP/GCMSMS/018IS 5182 (Part 11), 2011CVR/INS/SOP/GCMSMS/026 |
| Benzo(a)Pyrene | IS 5182 (Part 12), 2004 |
| Bromobenzene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Bromochloromethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Bromodichloromethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Bromoform | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Bromomethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Carbon Monoxide as (CO) | IS 5182 (Part 10) : Clause 4 / Non-dispersive infrared Absorption Method |
| Carbon Tetrachloride | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Chlorine as (Cl2) | IS 5182 (Part 19)EPA 26A |
| Chlorobenzene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Chloroethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Chloroform | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Chloromethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| cis-1,2-Dichloroethene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| cis-1,3-Dichloropropene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Dibromochloromethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Dibromomethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Dichlorodifluoromethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Ethylbenzene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Fine Particulate Matter (PM 2.5) | IS 5182 (Part 24)CVR/ENV/SOP/012 |
| Hexachlorobutadiene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Hydrogen Sulphide as (H2S) | IS 5182 (Part 7)NIOSH - 6013 |
| Isopropylbenzene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Lead as Pb | CVR/INS/SOP/ICPMS/003IS 3025 (PART 65)CVR/INS/SOP/ICPMS/001 |
| m- & p-Xylenes | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Methylene Chloride | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Naphthalene | CVR/INS/SOP/GCMSMS/003CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026 |
| n-Butylbenzene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Nickel as Ni | CVR/INS/SOP/ICPMS/003IS 3025 (PART 65)CVR/INS/SOP/ICPMS/001 |
| n-Propylbenzene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Oxides of Nitrogen as (NO2) | IS 5182 (Part 6) |
| o-Xylene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Ozone as (O3) | IS 5182 (Part 9) |
| Respirable Suspended Particulate Matter( PM10), Cyclonic Flow Tecnique | IS 5182 (Part 23) |
| sec-Butylbenzene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Styrene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Sulphur Dioxide as (SO2) | IS 5182 (Part 2/Sec-1)CVR/ENV/SOP/01IS 11255 (Part 2) |
| t-Butylbenzene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Tetrachloroethene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Toluene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Total Fluorides as (F) | IS 5182 (Part 13) |
| Total Volatile Organic Compounds | CVR/ENV/SOP/015 |
| trans-1,2-Dichloroethene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| trans-1,3-Dichloropropene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Trichloroethene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Trichlorofluoromethane | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Vinyl Chloride | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Xylene | CVR/INS/SOP/GCMSMS/018CVR/INS/SOP/GCMSMS/026CVR/INS/SOP/GCMSMS/025 |
| Noise Levels Leq dB(A) Ambient | IS 9989 |
Need a parameter that isn't listed? Share your product and requirement and our technical team will confirm the applicable method, standard and turnaround, and advise whether it falls within our NABL scope. Contact our technical team →
Methods & Standards
How Ambient Air Quality Monitoring is tested
Reference methods applied
IS 5182 (Part 2/Sec-1) — SO2IS 5182 (Part 6) — NOxIS 5182 (Part 23) — PM10IS 5182 (Part 24) — PM2.5IS 5182 (Part 10) — CO (NDIR)IS 5182 (Part 9) — OzoneIS 5182 (Part 12) — Benzo(a)PyreneIS 9989 — Noise
Pollutants are measured over the averaging periods prescribed by NAAQS (2009). Where more than one standard applies, the appropriate method is selected for each parameter; speciated VOCs are determined under validated in-house CVR GC-MS/MS SOPs within the accredited scope.
Accreditation & Recognition
Accreditations covering Ambient Air Quality Monitoring
See the Accreditations & Scope page for full certificate details.
NABL
CPCB
ISO 45001
Samples we accept
Samples we accept for Ambient Air Quality Monitoring
Industrialresidential & construction-site ambient airnoise
How It Works
From enquiry to accredited report
Enquiry & Scope
Share your site, regulatory driver and parameters; we define the plan.
Field Sampling
Trained personnel sample on-site per CPCB/IS protocols.
Lab Analysis
Accredited instruments with full chain-of-custody and QC.
Technical Review
Results checked against statutory limits and approved.
Accredited Report
Audit-ready report formatted for regulatory submission.
FAQ
Ambient Air Quality Monitoring — frequently asked questions
Is Ambient Air Quality Monitoring NABL-accredited at CVR Labs?
Yes. Ambient Air Quality Monitoring is performed under CVR Labs' NABL ISO/IEC 17025:2017 accreditation (Cert. NABLT0626TN18226) at our Chennai laboratory, with traceable, audit-ready reports accepted for compliance and submission.
Which parameters and standard apply to ambient air?
PM10, PM2.5, SO2, NOx, CO, ozone, ammonia, benzene and lead, reported against the National Ambient Air Quality Standards (NAAQS, 2009).
Can you provide an EIA baseline?
Yes. We design and run ambient-air, noise and related monitoring to provide the baseline dataset required for EIA and environmental-clearance compliance.
How are monitoring stations positioned?
Around the source using upwind/downwind and receptor logic appropriate to the site and regulatory purpose, so the dataset represents real exposure.
What samples do you accept for Ambient Air Quality Monitoring?
We routinely handle Industrial, residential & construction-site ambient air, noise. Share your exact sample type and target standard and our technical team will confirm the required quantity, method and turnaround.
What parameters are included in Ambient Air Quality Monitoring?
The Ambient Air Quality Monitoring panel covers 76 accredited parameters such as 1,1,1,2-Tetrachloroethane, 1,1,1-Trichloroethane, 1,1,2,2-Tetrachloroethane, 1,1,2-Trichloroethane and 1,1-Dichloroethane. The full searchable list is on this page — tell us your target and we'll map the right sub-panel for your sample.
Ready to test with an accredited laboratory?
NABL ISO/IEC 17025:2017 · ISO 9001 · ISO 45001 · CPCB · BIS — trusted since 1999.
Related Services
Frequently requested together
Stack Emission MonitoringIsokinetic stack sampling for PM, SO2, NOx, CO, metals and acid gases to CPCB norms.Indoor Air Quality TestingWork-environment and indoor air assessment – dust, gases, VOCs, CO2 and thermal comfort.VOC MonitoringSpeciated volatile organic compound and compressed-gas analysis by GC-MS.