---
title: Pinpointing the Source of Benzene Emissions in Real Time with RJ Lee Group Inc.
description: Discover RJ Lee Group's forensic expertise in materials analysis and PFAS testing, providing critical insights for environmental investigations, remediation, and compliance.
---

[The Scientific Insights Blog - RJ Lee Group ](https://www.rjleegroup.com/blog)

# [Pinpointing the Source of Benzene Emissions in Real Time with RJ Lee Group Inc.](https://www.rjleegroup.com/blog/pinpointing-the-source-of-benzen-emissions)

 Written by [Peter Zemek](https://www.rjleegroup.com/blog/author/peter-zemek) | Oct 9, 2025 5:45:00 PM

Benzene remains one of the most scrutinized air toxics under [**EPA Method 325B**](https://www.epa.gov/emc/method-325b-volatile-organic-compounds-fugitive-and-area-sources-sampler-preparation-and), requiring industry to not only monitor fenceline concentrations but also identify and mitigate root causes.  Do you have an excursion or a consent decree?  Do you need root cause analysis RCA?

That’s where our ultra-low detection capabilities are called upon with RJ Lee’s, [**mobile PTR-TOF-MS platforms**](https://www.rjleegroup.com/laboratory-testing/air-sampling-analysis).

**Key Advantages**:

- **Real-Time Detection**: Provides second-by-second data on [**BTEX compounds**](https://en.wikipedia.org/wiki/BTX_(chemistry)) (benzene, toluene, ethylbenzene, xylenes).
- **Root Cause Analysis**: Rapidly traces measured fluxes back to leaking valves, tanks, or process units contributing to offsite impacts.
- **Fenceline Assurance**: Goes beyond passive tube monitoring by quantifying emission sources and supporting compliance with community exposure limits.
- **Field Mobility**: Deployable directly at refineries, chemical plants, and industrial sites to close the loop between monitoring and corrective action

 

*Ensure compliance with M325B with our mobile labs. *

 

With PTR-TOF-MS, facilities can move from **“detection” to “action”**—finding leaks, mitigating benzene releases, and protecting both compliance and community trust.

If your facility is seeking a faster, defensible path to source attribution under [M325B](https://www.epa.gov/emc/method-325b-volatile-organic-compounds-fugitive-and-area-sources-sampler-preparation-and), let’s connect.

[View full post](https://www.rjleegroup.com/blog/pinpointing-the-source-of-benzen-emissions)

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