In a recent study, RJ Lee Group alongside researchers from multiple academic and industry entities such as Carnegie Mellon University and NOAA have worked jointly on identifying the sources for secondary organic aerosols (SOA) in source-rich urban environments. The team performed mobile sampling studies involving the highly sophisticated aerosol mass spectrometer (AMS) and two different […]
Read More
Indoor air quality research continues to grow substantially over the last several years. Most research prior to the 2010’s was focused on outdoor emission sources, rather than the indoor air; with people spending almost 90% of their indoors, indoor air quality has a severe impact on people’s health. A specifically problematic aspect air monitoring within […]
Read More
On Friday, June 21, 2019 at 4:00 a.m., a massive series of explosions erupted on a South Philadelphia refinery complex. According to the Philadelphia Fire Department, a vat of butane had ignited and eventually exploded. The fire caused a thick cloud of smoke to cover the neighboring areas, particularly concentrated east of the refinery. RJ […]
Read More
We are pleased to announce a new initiative by the experts at RJ Lee Group that conveys important material information to our readers in concise, focused resource articles. Every three weeks, our scientists will publish a new topic relating to their field of expertise as a Materials Insights article. Matthew J. Perricone, Ph.D., Principal Investigator and […]
Read More
LC/MS/MS Instrument Arrives at RJLG Recently obtained by the RJ Lee Group, the liquid chromatography/mass spectrometer/mass spectrometer (LC/MS/MS) is an instrument with exceptional capability for both qualitative and quantitative analysis. It has remarkable sensitivity and is capable of providing fast and accurate identification of targeted compounds of interest. In many instances the instrument will be […]
Read More
RJ Lee Group is proud to announce our newest teaming partner, Montrose Environmental Group. Montrose is a strategic partner for the environmental analytical services market, helping to scientifically validate Proton Transfer Reaction Mass Spectrometry (PTR-MS) as an in-field technique for air quality monitoring. The company has a longstanding tradition in environmental measurement and analytical services, […]
Read More
Dr. Eric R. Giannini, RJ Lee Group’s expert in test method development, and nondestructive testing, has co-authored a new publication in Elsevier: Construction & Building Materials. The article is titled “Characterization of Concrete Affected by Delayed Ettringite Formation Using the Stiffness Damage Test.” In this publication, Dr. Giannini and his colleagues apply the stiffness damage test […]
Read More
RJ Lee Group is pleased to announce the release of our Laboratory Testing Guide 2018, which features many of the services, methods, and analyses techniques offered by the company. In addition to the categories included in the past, such as environmental and industrial hygiene services, materials characterization services, criminal forensics services, pharmaceutical services, and others, […]
Read More
Modern companies are faced with numerous international requirements related to Environment, Health, and Safety. Simply being in compliance with national EHS laws and regulations is considered minimum performance. Companies are required to demonstrate those systems and programs are in place to achieve this level of compliance at the national level in order to comply with […]
Read More
New OSHA standards for respirable crystalline silica (RCS) have generated quite a bit of discussion among industrial hygiene and environmental health and safety professionals. Enforcement of the new regulations began on September 23rd, 2017 for the construction industry, with a 30-day grace period so companies had ample time to implement control measures and address any […]
Read More