Joseph E Roehl

Title: Joseph E Roehl: Innovator in Photoionization Ion Mobility Spectrometry

Introduction

Joseph E Roehl is a notable inventor based in Baltimore, MD (US), recognized for his contributions to the field of ion mobility spectrometry. With a focus on improving detection methods, he has developed innovative technologies that enhance the sensitivity and specificity of gas analysis.

Latest Patents

Joseph E Roehl holds a patent for an improved photoionization ion mobility spectrometer. This device utilizes a flashlamp as the source for ionization, allowing for the introduction of a gas sample via a carrier gas into an ionization chamber. The ionizable molecules in the gas sample are ionized by ultraviolet light emitted from the flashlamp. The ionized molecules are then attracted by an electrostatic drift field into a drift chamber, where they travel against the flow of a drift gas until they are captured by a collector. Additionally, a dopant with a lower ionization potential can be introduced to further enhance the device's performance.

Career Highlights

Joseph E Roehl is associated with Environmental Technologies Group, Inc., where he applies his expertise in developing advanced spectrometric technologies. His work has significantly contributed to the field of environmental monitoring and analysis.

Collaborations

Throughout his career, Joseph has collaborated with notable colleagues, including Glenn E Spangler and Gautam B Patel, who have contributed to his research and development efforts.

Conclusion

Joseph E Roehl's innovative work in photoionization ion mobility spectrometry exemplifies the impact of advanced technologies in environmental analysis. His contributions continue to influence the field and enhance the capabilities of gas detection methods.